Re: [OSL | CCIE_Voice] LAN QOS - CUPC questions
hi All, Any update on this? On Wed, Oct 16, 2013 at 10:07 PM, sanity insanity networksanitytoinsan...@gmail.com wrote: Hi All, I need your analysis based on the following Requirement and my configuration. Please advise Requirement : --- On the HQ switch I need to configure the following... 1) TO ensure cos value of 5 mapped to dscp ef 2) On interface g1/0/4 make sure all incoming CUPC signal traffic to cs3 guarantee for 32k bandwidth . Anything in excess should be first marked down to dscp value of 8 before transmitting. 3) Policy a list of protocols for Presence. My Configuration: - mls qos mls qos map policed-dscp 24 to 8 mls qos map cos-dscp 0 8 16 24 32 46 48 56 ip access-list extended SIG permit tcp any any eq 80 permit tcp any any eq 443 permit tcp any any eq 993 permit tcp any any eq 7993 permit tcp any any eq 143 permit tcp any any eq 389 permit tcp any any eq 2748 permit tcp any any eq 5060 permit udp any any eq 5060 permit udp any any eq 69 class-map match-any SIG match access-group name SIG ip access-list extended RTP permit access-group name 16384 32766 class-map match-any RTP match access-group name RTP policy-map CUPC class RTP set dscp ef class SIG set dscp cs3 police 32000 8000 exceed-action policed-dscp-transmit class class-default Under the trunk port to the router and servers I use mls qos trust dscp Under the phone ports I use... mls qos trust cos mls qos trust device-cisco-phone Under interface G1/0/3 which connects to uccx server with cupc client I apply int g1/0/4 service-policy input CUPC Questions: 1) Do I need to apply the service policy input command to the interface g1/0/4 which connects to uccx server with cupc client or do I need to put the service policy under g1/0/3 which connects to the PC ( test PC) on which cupc is also present? 2) what are the negative affects of QOS going wrong incase it is applied to the wrong interface? 3) Is my above configuration correct ? as we attempt LAN QOS in the end any checks we need to ensure to see everything works fine? 4) In my home lab I use Virtual machines with 2 switches . This does not technically simulate the exact scenario of the servers connecting to switch ports or the PC connected to switch port . Considering the following condition how do we simulate the above LAN QOS scenario? -MJ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN QOS - CUPC questions
Hi All, I need your analysis based on the following Requirement and my configuration. Please advise Requirement : --- On the HQ switch I need to configure the following... 1) TO ensure cos value of 5 mapped to dscp ef 2) On interface g1/0/4 make sure all incoming CUPC signal traffic to cs3 guarantee for 32k bandwidth . Anything in excess should be first marked down to dscp value of 8 before transmitting. 3) Policy a list of protocols for Presence. My Configuration: - mls qos mls qos map policed-dscp 24 to 8 mls qos map cos-dscp 0 8 16 24 32 46 48 56 ip access-list extended SIG permit tcp any any eq 80 permit tcp any any eq 443 permit tcp any any eq 993 permit tcp any any eq 7993 permit tcp any any eq 143 permit tcp any any eq 389 permit tcp any any eq 2748 permit tcp any any eq 5060 permit udp any any eq 5060 permit udp any any eq 69 class-map match-any SIG match access-group name SIG ip access-list extended RTP permit access-group name 16384 32766 class-map match-any RTP match access-group name RTP policy-map CUPC class RTP set dscp ef class SIG set dscp cs3 police 32000 8000 exceed-action policed-dscp-transmit class class-default Under the trunk port to the router and servers I use mls qos trust dscp Under the phone ports I use... mls qos trust cos mls qos trust device-cisco-phone Under interface G1/0/3 which connects to uccx server with cupc client I apply int g1/0/4 service-policy input CUPC Questions: 1) Do I need to apply the service policy input command to the interface g1/0/4 which connects to uccx server with cupc client or do I need to put the service policy under g1/0/3 which connects to the PC ( test PC) on which cupc is also present? 2) what are the negative affects of QOS going wrong incase it is applied to the wrong interface? 3) Is my above configuration correct ? as we attempt LAN QOS in the end any checks we need to ensure to see everything works fine? 4) In my home lab I use Virtual machines with 2 switches . This does not technically simulate the exact scenario of the servers connecting to switch ports or the PC connected to switch port . Considering the following condition how do we simulate the above LAN QOS scenario? -MJ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QoS on HWIC-4ESW
Hi Sam,My doubts is about how i'll mark packets on a remote site that are usingHWIC-4ESW to connect IPphones.I see packets hitting the policy-map onHQ's serial interface,is because I configured this.-- SW-HQ --interface FastEthernet0/14description hq ipphonemls qos trust device cisco-phonemls qos trust cos!interface FastEthernet0/10description HQ TRUNK HQ TRUNK HQmls qos trust dscp!!---Here is the config for WAN QoS.-- HQ --interface Serial0/1/0:0.1 point-to-pointbandwidth 384ip address 10.110.33.1 255.255.255.128ip ospf mtu-ignoresnmp trap link-statusframe-relay interface-dlci 201 CISCO class AutoQoS-FR-Se0/1/0:0-201 auto qos voip trustframe-relay ip rtp header-compression!!- Remote --interface Serial0/1/0:0.1 point-to-pointbandwidth 384ip address 10.110.33.2 255.255.255.128ip ospf mtu-ignoresnmp trap link-statusframe-relay interface-dlci 101 CISCO class AutoQoS-FR-Se0/1/0:0-101 auto qos voip trustframe-relay ip rtp header-compression!!---best regardsAlexOn Aug 27, 2013, at 12:33 AM, Sam Wilson wilsonc...@gmail.com wrote:You will have to either trust the dscp marking done by the switch or you will have to mark them again. Please post your router configs and may be we can get a bit more detailedHthSent from my Windows PhoneFrom: Alex Mendoza Sent: 8/26/2013 10:54 PMTo: CCIE Study Subject: [OSL | CCIE_Voice] LAN QoS on HWIC-4ESWHi All,I'm wondering about QoS on remote site.I just applied auto-qos between HQ and remote site, everything looks fine.When I run this command on both routers, in remote site I can't see packets.HQ Class-map: AutoQoS-VoIP-RTP-Trust (match-any) 11139 packets, 704260 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip dscp ef (46)11139 packets, 704260 bytes5 minute rate 0 bps Priority: 47 kbps, burst bytes 1500, b/w exceed drops: 0REMOTE Class-map: AutoQoS-VoIP-RTP-Trust (match-any) 0 packets, 0 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip dscp ef (46)0 packets, 0 bytes5 minute rate 0 bps Priority: 47 kbps, burst bytes 1500, b/w exceed drops: 0For remote site I don't use HWIC-4ESW (expensive) instead am using ports from 3560 (same as HQ),after I put the commands:SW(config)#interface FastEthernet0/17SW(config-if)#shutSW(config-if)# mls qos trust device cisco-phoneSW(config-if)# mls qos trust cosSW(config-if)#no shutI started to see packets on policy-map. Class-map: AutoQoS-VoIP-RTP-Trust (match-any) 186 packets, 11904 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip dscp ef (46)186 packets, 11904 bytes5 minute rate 0 bps Priority: 47 kbps, burst bytes 1500, b/w exceed drops: 0How I'll mark the packets on remote site to hit the policy-map in the FR link?Thanks in advancedMendoza___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN QoS on HWIC-4ESW
Hi All,I'm wondering about QoS on remote site.I just applied auto-qos between HQ and remote site, everything looks fine.When I run this command on both routers, in remote site I can't see packets.HQ Class-map: AutoQoS-VoIP-RTP-Trust (match-any) 11139 packets, 704260 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip dscp ef (46)11139 packets, 704260 bytes5 minute rate 0 bps Priority: 47 kbps, burst bytes 1500, b/w exceed drops: 0REMOTE Class-map: AutoQoS-VoIP-RTP-Trust (match-any) 0 packets, 0 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip dscp ef (46)0 packets, 0 bytes5 minute rate 0 bps Priority: 47 kbps, burst bytes 1500, b/w exceed drops: 0For remote site I don't use HWIC-4ESW (expensive) instead am using ports from 3560 (same as HQ),after I put the commands:SW(config)#interface FastEthernet0/17SW(config-if)#shutSW(config-if)# mls qos trust device cisco-phoneSW(config-if)# mls qos trust cosSW(config-if)#no shutI started to see packets on policy-map. Class-map: AutoQoS-VoIP-RTP-Trust (match-any) 186 packets, 11904 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip dscp ef (46)186 packets, 11904 bytes5 minute rate 0 bps Priority: 47 kbps, burst bytes 1500, b/w exceed drops: 0How I'll mark the packets on remote site to hit the policy-map in the FR link?Thanks in advancedMendoza___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QoS on HWIC-4ESW
You will have to either trust the dscp marking done by the switch or you will have to mark them again. Please post your router configs and may be we can get a bit more detailed Hth Sent from my Windows Phone -- From: Alex Mendoza Sent: 8/26/2013 10:54 PM To: CCIE Study Subject: [OSL | CCIE_Voice] LAN QoS on HWIC-4ESW Hi All, I'm wondering about QoS on remote site. I just applied auto-qos between HQ and remote site, everything looks fine. When I run this command on both routers, in remote site I can't see packets. HQ Class-map: AutoQoS-VoIP-RTP-Trust (match-any) 11139 packets, 704260 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip dscp ef (46) 11139 packets, 704260 bytes 5 minute rate 0 bps Priority: 47 kbps, burst bytes 1500, b/w exceed drops: 0 REMOTE Class-map: AutoQoS-VoIP-RTP-Trust (match-any) 0 packets, 0 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip dscp ef (46) 0 packets, 0 bytes 5 minute rate 0 bps Priority: 47 kbps, burst bytes 1500, b/w exceed drops: 0 For remote site I don't use HWIC-4ESW (expensive) instead am using ports from 3560 (same as HQ), after I put the commands: SW(config)#interface FastEthernet0/17 SW(config-if)#shut SW(config-if)# mls qos trust device cisco-phone SW(config-if)# mls qos trust cos SW(config-if)#no shut I started to see packets on policy-map. Class-map: AutoQoS-VoIP-RTP-Trust (match-any) 186 packets, 11904 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip dscp ef (46) 186 packets, 11904 bytes 5 minute rate 0 bps Priority: 47 kbps, burst bytes 1500, b/w exceed drops: 0 How I'll mark the packets on remote site to hit the policy-map in the FR link? Thanks in advanced Mendoza ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN QOS
HI All, I am really struggling with QOS I can understand what this command means : mls qos srr-queue output cos-map queue 1 threshold 3 5 How to use it ??? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QOS
Hey, That command is assigning COS value 5 to Queue 1 Threshold 3. Depending on what DSCP value is mapped to COS 5 in the mld qos map cos-dscp mapping will determine what traffic is placed in that queue and threshold. I have seen COS 5 mapped to DSCP 40 by default using Auto QOS, which means that if we wanted EF or DSCP 46 mapped to COS value 5 we would need to change the cos-dscp mapping to match that. I hope I didn't confuse you even more. The QoS section of the 3750 Configuration Guide is a great help. Amp Quoting CCIEing aboaz...@gmail.com: HI All, I am really struggling with QOS I can understand what this command means : mls qos srr-queue output cos-map queue 1 threshold 3 5 How to use it ??? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QOS (CCIEing)
CCIEing, See page 111 of SRND CAT2970(config)#mls qos srr-queue output cos-map queue 1 threshold 3 5 ! Maps CoS 5 to Queue 1 Threshold 3 (Voice gets all of Queue 1) Remember Queue 1 is the priority Queue by default. You should download the SRND and use it when configuring LAN QoS. It makes it a cut and paste task. http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/Enterprise_QoS_SRND.pdf Michael Sears, CCIE(V)#38404 ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN qos
Hi all,scenario 1 : Q1 should get one third of bandwidth of link scenario 2: Guarantee traffic for priority queue priority queue out need only case 2, or both need it? thanksikizoo ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN QoS
Hi, If you've been told that cos 0, 1, and 2 should be in queue 1 and cos 3, 4, 7 need to be in queue 2 how would you go about this on the 3750? Below is my default configuration from doing the auto qos voip cisco-phone on my 3750. I highlighted the sections I think would need to be change but unsure on a lot of things at this point any guidance would be appreciated? mls qos map policed-dscp 24 26 46 to 0 mls qos map cos-dscp 0 8 16 24 32 46 48 56 mls qos srr-queue input bandwidth 90 10 mls qos srr-queue input threshold 1 8 16 mls qos srr-queue input threshold 2 34 66 mls qos srr-queue input buffers 67 33 mls qos srr-queue input cos-map queue 1 threshold 2 1 mls qos srr-queue input cos-map queue 1 threshold 3 0 mls qos srr-queue input cos-map queue 2 threshold 1 2 mls qos srr-queue input cos-map queue 2 threshold 2 4 6 7 mls qos srr-queue input cos-map queue 2 threshold 3 3 5 mls qos srr-queue input dscp-map queue 1 threshold 2 9 10 11 12 13 14 15 mls qos srr-queue input dscp-map queue 1 threshold 3 0 1 2 3 4 5 6 7 mls qos srr-queue input dscp-map queue 1 threshold 3 32 mls qos srr-queue input dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23 mls qos srr-queue input dscp-map queue 2 threshold 2 33 34 35 36 37 38 39 48 mls qos srr-queue input dscp-map queue 2 threshold 2 49 50 51 52 53 54 55 56 mls qos srr-queue input dscp-map queue 2 threshold 2 57 58 59 60 61 62 63 mls qos srr-queue input dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31 mls qos srr-queue input dscp-map queue 2 threshold 3 40 41 42 43 44 45 46 47 mls qos srr-queue output cos-map queue 1 threshold 3 5 mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7 mls qos srr-queue output cos-map queue 3 threshold 3 2 4 mls qos srr-queue output cos-map queue 4 threshold 2 1 mls qos srr-queue output cos-map queue 4 threshold 3 0 mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45 46 47 mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31 mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55 mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63 mls qos srr-queue output dscp-map queue 3 threshold 3 16 17 18 19 20 21 22 23 mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37 38 39 mls qos srr-queue output dscp-map queue 4 threshold 1 8 mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15 mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7 mls qos queue-set output 1 threshold 1 138 138 92 138 mls qos queue-set output 1 threshold 2 138 138 92 400 mls qos queue-set output 1 threshold 3 36 77 100 318 mls qos queue-set output 1 threshold 4 20 50 67 400 mls qos queue-set output 2 threshold 1 149 149 100 149 mls qos queue-set output 2 threshold 2 118 118 100 235 mls qos queue-set output 2 threshold 3 41 68 100 272 mls qos queue-set output 2 threshold 4 42 72 100 242 mls qos queue-set output 1 buffers 10 10 26 54 mls qos queue-set output 2 buffers 16 6 17 61 mls qos Hugo ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QoS
Just to address your question, you can change your second highlighted portion to mls qos srr-q out cos-m q 1 t 3 0 1 2 mls qos srr-q out cos-m q 2 t 3 3 4 7 and deal the cos 5 accordingly. If your requirement is to drop some cos packets when related queue reaches some threshold, then you will have to configure mls qos statements accordingly, and the queue-set out threshold to meet your requirement. For the first highlighted statement, you have to change to make it what it is right now, if you're not using auto qos, OR if the question asks you to manipulate to match, for example, AF31 to cos 3, etc. I'll suggest you consider reading QoS SRND LAN QoS section, as it will guide you understand these bits. Hope this helps, On Thu, Apr 11, 2013 at 12:25 AM, Barrera, Hugo hugo.barr...@nexusis.comwrote: Hi, ** ** If you’ve been told that cos 0, 1, and 2 should be in queue 1 and cos 3, 4, 7 need to be in queue 2 how would you go about this on the 3750? Below is my default configuration from doing the auto qos voip cisco-phone on my 3750. I highlighted the sections I think would need to be change but unsure on a lot of things at this point any guidance would be appreciated? ** ** mls qos map policed-dscp 24 26 46 to 0 *mls qos map cos-dscp 0 8 16 24 32 46 48 56* mls qos srr-queue input bandwidth 90 10 mls qos srr-queue input threshold 1 8 16 mls qos srr-queue input threshold 2 34 66 mls qos srr-queue input buffers 67 33 mls qos srr-queue input cos-map queue 1 threshold 2 1 mls qos srr-queue input cos-map queue 1 threshold 3 0 mls qos srr-queue input cos-map queue 2 threshold 1 2 mls qos srr-queue input cos-map queue 2 threshold 2 4 6 7 mls qos srr-queue input cos-map queue 2 threshold 3 3 5 mls qos srr-queue input dscp-map queue 1 threshold 2 9 10 11 12 13 14 15* *** mls qos srr-queue input dscp-map queue 1 threshold 3 0 1 2 3 4 5 6 7 mls qos srr-queue input dscp-map queue 1 threshold 3 32 mls qos srr-queue input dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23 mls qos srr-queue input dscp-map queue 2 threshold 2 33 34 35 36 37 38 39 48 mls qos srr-queue input dscp-map queue 2 threshold 2 49 50 51 52 53 54 55 56 mls qos srr-queue input dscp-map queue 2 threshold 2 57 58 59 60 61 62 63 mls qos srr-queue input dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31 mls qos srr-queue input dscp-map queue 2 threshold 3 40 41 42 43 44 45 46 47 *mls qos srr-queue output cos-map queue 1 threshold 3 5* *mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7* *mls qos srr-queue output cos-map queue 3 threshold 3 2 4* *mls qos srr-queue output cos-map queue 4 threshold 2 1* *mls qos srr-queue output cos-map queue 4 threshold 3 0* mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45 46 47 mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31 mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55 mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63 mls qos srr-queue output dscp-map queue 3 threshold 3 16 17 18 19 20 21 22 23 mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37 38 39 mls qos srr-queue output dscp-map queue 4 threshold 1 8 mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15 mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7 *mls qos queue-set output 1 threshold 1 138 138 92 138* *mls qos queue-set output 1 threshold 2 138 138 92 400* *mls qos queue-set output 1 threshold 3 36 77 100 318* *mls qos queue-set output 1 threshold 4 20 50 67 400* *mls qos queue-set output 2 threshold 1 149 149 100 149* *mls qos queue-set output 2 threshold 2 118 118 100 235* *mls qos queue-set output 2 threshold 3 41 68 100 272* *mls qos queue-set output 2 threshold 4 42 72 100 242* mls qos queue-set output 1 buffers 10 10 26 54 mls qos queue-set output 2 buffers 16 6 17 61 mls qos ** ** *Hugo * ** ** ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com -- Suresh Bhandari ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QOS - Need clarification
hi All, Any feedback on the below email? -Vir From: virajith lt;vir...@rediffmail.comgt; Sent: Sun, 30 Dec 2012 21:31:01 To: ccie_voice@onlinestudylist.comlt;ccie_voice@onlinestudylist.comgt; Subject: LAN QOS - Need clarification Hi All, I need to map cos 5 to EF 46. The gig port for CUPC client needs to be marked for dscp3 and guaranteed BW of 32k for CUPC signalling Excess traffic should be marked to dscp 8 and then transmitted. My configuration on the Headquater switch is as follows... mls qos mls qos map cos-dscp 0 8 16 24 32 46 48 56 mls qos map policed-dscp 24 26 to 8 ip access-list extended cupc-sig permit udp IPofCUPserver eq 5060 any permit tcp IPofCUPserver eq 5060 any permit tcp IPofCUPserver eq 2748 any class-map match any cupc-sig match access-group name cupc-sig class cupc-sig police 32000 8000 exceed-action policed-dscp-transmit set dscp cs3 interface GigabitEthernet1/0/4 service-policy input cupc After this I have applied on the HQ switch ... 1) mls qos trust dscp on the trunk port to the HQ router 2) mls qos trust dscp to all ports that connect to the servers 3)mls qos trust device cisco-phone and mls qos trust cos to the ports that connect to the phones. Questions : 1) Is the above config for the CUPC client correct? Please correct me if it is incorrect 2)Is the configuration of qos for the other ports as indicated correct? 3)Do the port configurations pertaining to QOS need to done on the Branch routers as well (that nbsp; have the ESW module in them)nbsp; ? 4) Has anyone seen any negative impact of qos settings on the switch that could break other configs if incorrect ? Please assist! -Vir Catch India as it happens with the Rediff News App. To download it for FREE, click here ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN QOS - Need clarification
Hi All, I need to map cos 5 to EF 46. The gig port for CUPC client needs to be marked for dscp3 and guaranteed BW of 32k for CUPC signalling Excess traffic should be marked to dscp 8 and then transmitted. My configuration on the Headquater switch is as follows... mls qos mls qos map cos-dscp 0 8 16 24 32 46 48 56 mls qos map policed-dscp 24 26 to 8 ip access-list extended cupc-sig permit udp IPofCUPserver eq 5060 any permit tcp IPofCUPserver eq 5060 any permit tcp IPofCUPserver eq 2748 any class-map match any cupc-sig match access-group name cupc-sig class cupc-sig police 32000 8000 exceed-action policed-dscp-transmit set dscp cs3 interface GigabitEthernet1/0/4 service-policy input cupc After this I have applied on the HQ switch ... 1) mls qos trust dscp on the trunk port to the HQ router 2) mls qos trust dscp to all ports that connect to the servers 3)mls qos trust device cisco-phone and mls qos trust cos to the ports that connect to the phones. Questions : 1) Is the above config for the CUPC client correct? Please correct me if it is incorrect 2)Is the configuration of qos for the other ports as indicated correct? 3)Do the port configurations pertaining to QOS need to done on the Branch routers as well (that nbsp; have the ESW module in them)nbsp; ? 4) Has anyone seen any negative impact of qos settings on the switch that could break other configs if incorrect ? Please assist! -Vir ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN QoS
Does someone have a complete solution on how to configure LAN QoS in regard to the CUpC client? Thanks Randall ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN Qos questions
Steffen, Just to clarify what Krishna was saying. Here is the command reference mls qos queue-set output qset-id threshold queue-id drop-threshold1 drop-threshold2 reserved-threshold maximum-threshold There is no threshold 3 configuration because it is 100% and not configurable. Where you have 75% is the reserved-threshold not threshold 3. Moving cos and dscp values to threshold 1 and changing threshold 1 while keeping threshold 2, reserved-threshold, and maximum-threshold at 100 is just the easiest way to do it in the lab. If you use auto qos on an unused port like I do it will change the default mappings so everything is not in threshold 1 allowing you to move just values you want into threshold 1. HTH Cory From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Steffen Bruening Sent: Sunday, October 21, 2012 1:45 AM To: Krishna Cc: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] LAN Qos questions Hi Krishna, sounds good so far. But as I said when COS 5 is the only COS in Queue 1, which Traffic/COS could fill T1 and T2 up to 100% when COS 5 is only mapped to T3? Regards Steffen 2012/10/21 Krishna vinayak_...@yahoo.com steffen, your approach is not right way of doing it because when u look the threshold values of the queues you have allocated max threshold is 100 and reserved threshold is 100, guess what both threshold i.e. t1 and t2 takes up to 100% value when desired and that being said after t1 and t2 were filled it comes to t3 which has 75% i.e. it is the last threshold where it will take/borrow the memory value from reserved threshold when desired. long story short... right way of doing it either assign it to t2 or t1 and assign threshold value of 75% for correct approach... thank you krishna. _ From: Steffen Bruening stbruen...@gmail.com To: Pixar Perfect pixarperf...@live.com Cc: ccie_voice@onlinestudylist.com Sent: Saturday, October 20, 2012 6:38 PM Subject: Re: [OSL | CCIE_Voice] LAN Qos questions I have this seen this also, to be honest I think it shouldn't matter whether it is in threshold 1 or 3 as long as no other COS is in same Threshold of queue 1 of queset 2. When you leave in in threshold 3 I think you should be fine with: mls qos queue-set output 2 threshold 1 100 100 75 100. Maybe I am completly wrong but thats they way I understood this. Regards Steffen 2012/10/20 Pixar Perfect pixarperf...@live.com The requirement is as follows on Lab 2 QOS section of the 5-Lab Handbook. For traffic being sent to the Site A gateway ensure that the traffic marked with COS 5 is dropped if the queue 1 is 75% full The Solution guide (page 408) has the following solution. mls qos queue-set output 2 threshold 1 75 100 100 100 -- queset is preconfigured on the port to 2 mls qos srr-queue output cos-map queue 1 threshold 3 5 .. My interpretation was to move the Cos 5 into Q1t1 but the command says threshold 3 .. is this just a typo or am I missing something obvious. Thanks! ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com http://www.ipexpert.com/ Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.platinumplacement.com/ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN Qos questions
The requirement is as follows on Lab 2 QOS section of the 5-Lab Handbook. For traffic being sent to the Site A gateway ensure that the traffic marked with COS 5 is dropped if the queue 1 is 75% full The Solution guide (page 408) has the following solution. mls qos queue-set output 2 threshold 1 75 100 100 100 -- queset is preconfigured on the port to 2mls qos srr-queue output cos-map queue 1 threshold 3 5 ..My interpretation was to move the Cos 5 into Q1t1 but the command says threshold 3 .. is this just a typo or am I missing something obvious. Thanks! ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN Qos questions
I noticed this and I believe it is a typo further evidenced by the note next to the command that says something to the effect that that command moves it to q1t1 Sent from my iPhone On Oct 20, 2012, at 2:17 AM, Pixar Perfect pixarperf...@live.com wrote: The requirement is as follows on Lab 2 QOS section of the 5-Lab Handbook. For traffic being sent to the Site A gateway ensure that the traffic marked with COS 5 is dropped if the queue 1 is 75% full The Solution guide (page 408) has the following solution. mls qos queue-set output 2 threshold 1 75 100 100 100 -- queset is preconfigured on the port to 2 mls qos srr-queue output cos-map queue 1 threshold 3 5 .. My interpretation was to move the Cos 5 into Q1t1 but the command says threshold 3 .. is this just a typo or am I missing something obvious. Thanks! ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN Qos questions
I have this seen this also, to be honest I think it shouldn't matter whether it is in threshold 1 or 3 as long as no other COS is in same Threshold of queue 1 of queset 2. When you leave in in threshold 3 I think you should be fine with: mls qos queue-set output *2* threshold 1 100* *100* 75 *100. Maybe I am completly wrong but thats they way I understood this. Regards Steffen 2012/10/20 Pixar Perfect pixarperf...@live.com The requirement is as follows on Lab 2 QOS section of the 5-Lab Handbook. For traffic being sent to the Site A gateway ensure that the traffic marked with COS 5 is dropped if the queue 1 is 75% full The Solution guide (page 408) has the following solution. mls qos queue-set output *2* threshold 1 *75 100 100 100* -- queset is preconfigured on the port to 2 mls qos srr-queue output cos-map queue 1 threshold *3* 5 .. My interpretation was to move the Cos 5 into Q1t1 but the command says threshold 3 .. is this just a typo or am I missing something obvious. Thanks! ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN Qos questions
steffen, your approach is not right way of doing it because when u look the threshold values of the queues you have allocated max threshold is 100 and reserved threshold is 100, guess what both threshold i.e. t1 and t2 takes up to 100% value when desired and that being said after t1 and t2 were filled it comes to t3 which has 75% i.e. it is the last threshold where it will take/borrow the memory value from reserved threshold when desired. long story short... right way of doing it either assign it to t2 or t1 and assign threshold value of 75% for correct approach... thank you krishna. From: Steffen Bruening stbruen...@gmail.com To: Pixar Perfect pixarperf...@live.com Cc: ccie_voice@onlinestudylist.com Sent: Saturday, October 20, 2012 6:38 PM Subject: Re: [OSL | CCIE_Voice] LAN Qos questions I have this seen this also, to be honest I think it shouldn't matter whether it is in threshold 1 or 3 as long as no other COS is in same Threshold of queue 1 of queset 2. When you leave in in threshold 3 I think you should be fine with: mls qos queue-set output 2 threshold 1 100 10075 100. Maybe I am completly wrong but thats they way I understood this. Regards Steffen 2012/10/20 Pixar Perfect pixarperf...@live.com The requirement is as follows on Lab 2 QOS section of the 5-Lab Handbook. For traffic being sent to the Site A gateway ensure that the traffic marked with COS 5 is dropped if the queue 1 is 75% full The Solution guide (page 408) has the following solution. mls qos queue-set output 2 threshold 1 75 100 100 100 -- queset is preconfigured on the port to 2 mls qos srr-queue output cos-map queue 1 threshold 3 5 .. My interpretation was to move the Cos 5 into Q1t1 but the command says threshold 3 .. is this just a typo or am I missing something obvious. Thanks! ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN Qos questions
Hi Krishna, sounds good so far. But as I said when COS 5 is the only COS in Queue 1, which Traffic/COS could fill T1 and T2 up to 100% when COS 5 is only mapped to T3? Regards Steffen 2012/10/21 Krishna vinayak_...@yahoo.com steffen, your approach is not right way of doing it because when u look the threshold values of the queues you have allocated max threshold is 100 and reserved threshold is 100, guess what both threshold i.e. t1 and t2 takes up to 100% value when desired and that being said after t1 and t2 were filled it comes to t3 which has 75% i.e. it is the last threshold where it will take/borrow the memory value from reserved threshold when desired. long story short... right way of doing it either assign it to t2 or t1 and assign threshold value of 75% for correct approach... thank you krishna. -- *From:* Steffen Bruening stbruen...@gmail.com *To:* Pixar Perfect pixarperf...@live.com *Cc:* ccie_voice@onlinestudylist.com *Sent:* Saturday, October 20, 2012 6:38 PM *Subject:* Re: [OSL | CCIE_Voice] LAN Qos questions I have this seen this also, to be honest I think it shouldn't matter whether it is in threshold 1 or 3 as long as no other COS is in same Threshold of queue 1 of queset 2. When you leave in in threshold 3 I think you should be fine with: mls qos queue-set output *2* threshold 1 100* *100* 75 *100. Maybe I am completly wrong but thats they way I understood this. Regards Steffen 2012/10/20 Pixar Perfect pixarperf...@live.com The requirement is as follows on Lab 2 QOS section of the 5-Lab Handbook. For traffic being sent to the Site A gateway ensure that the traffic marked with COS 5 is dropped if the queue 1 is 75% full The Solution guide (page 408) has the following solution. mls qos queue-set output *2* threshold 1 *75 100 100 100* -- queset is preconfigured on the port to 2 mls qos srr-queue output cos-map queue 1 threshold *3* 5 .. My interpretation was to move the Cos 5 into Q1t1 but the command says threshold 3 .. is this just a typo or am I missing something obvious. Thanks! ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.platinumplacement.com/ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] lan qos- cos 5 threshold 1 in queue 1 doesn't show in running config
Hi Krishna, you will not see Cos 5 in Threshold 1 because this is the default Threshold for Cos 5. The running-config presents always only the non-default values, e.g if you put an prefererence command on your dial-peers you will this only as long as it is not the default value 0. Regards Steffen 2012/10/14 Krishna vinayak_...@yahoo.com hi guys, i was wondering whether i am doing right way of doing lan qos or not ?? the requirements are assign cos 5 to priority queue , cos 3 4 to queue 2 with 60% exceed of cos 4 should be dropped. so here is my configuration for that mls qos mls qos srr-queue output cos-map queue 1 threshold 1 5 mls qos srr-queue output cos-map queue 2 threshold 2 3 mls qos srr-queue output cos-map queue 2 threshold 1 4 mls qos queue-set output 2 threshold 3 60 100 100 272 when i issued show run | i mls commands, i see every mls qos command except the cos 5 which is assigned to q1 t1. Is my approach is correct in dealing this question correctly?? does it matter whether we assign cos values to t1 or t2 or t3 in the queues??? your input is much appreciated. thank you krishna. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QOS QUESTION
Krishna, I added the mls qos srr-queue output dscp-map commands so that the cos-map and dscp-map match with equivalent values. This is not a requirement as your question is stated. In addition for the link to the router you need: mls qos trust dscp On the server ports: mls qos trust dscp On the phone ports: mls qos trust cos mls qos trust device cisco-phone This is assuming there are no other stated requirements for marking traffic requiring class-maps and policy-maps and service policies. Michael Sears From: Krishna [mailto:vinayak_...@yahoo.com] Sent: Sunday, October 14, 2012 6:59 PM To: Sears, Michael (msears) Cc: Online Study Subject: Re: LAN QOS QUESTION michael, thanks for your input on this query.. i am using 3750 switch provided by proctor labs.. I am well aware lan qos queuing and thresholds , but not sure where should i have to keep those values unless if they are explicitly stated. adding to that question, i assume i need to put mls qos trust dscp for the traffic coming from router to switch isn't it?? I see some guys putting as mls qos trust cos which i feel incorrect since layer 2 to laye3 mappings were done using cos-dscp mapping. please correct me if i am wrong. thank you krishna. From: michael.se...@compucom.commailto:michael.se...@compucom.com michael.se...@compucom.commailto:michael.se...@compucom.com To: ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Cc: vinayak_...@yahoo.commailto:vinayak_...@yahoo.com Sent: Sunday, October 14, 2012 4:50 PM Subject: RE: LAN QOS QUESTION On a Cisco 3750 -- I used the Enterprise_QoS_SRND [1] pages 105 through 112 to put together the following QoS configuration to meet your stated requirements. I would recommend you follow the SRND when writing your QoS configuration it's pretty much cut and paste. Requirements: assign cos 5 to priority queue assign cos 3 4 to queue 2 cos 4 exceed 60% should be dropped Solution: mls qos mls qos map cos-dscp 0 8 16 24 32 46 48 56 mls qos srr-queue output cos-map queue 1 threshold 3 5 mls qos srr-queue output cos-map queue 2 threshold 3 3 mls qos srr-queue output cos-map queue 2 threshold 1 4 mls qos srr-queue output dscp-map queue 1 threshold 3 46 mls qos srr-queue output dscp-map queue 2 threshold 3 24 mls qos srr-queue output dscp-map queue 2 threshold 1 32 mls qos queue-set output 1 threshold 2 60 100 100 100 Note how cos 3 and 4 are both in queue 2 but in different thresholds. Then since cos 4 is in threshold 1 it is marked down to 60% to discard cos 4 above 60%. Hope this helps. Keep in mind QoS will vary depending on switch type. INE has some great Videos on understanding LAN QoS and the relationships between Queues and Thresholds and related configurations. http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/QoS-SRND-Book.html What switch type are you using? Michael Sears Message: 1 Date: Sat, 13 Oct 2012 18:40:10 -0700 (PDT) From: Krishna vinayak_...@yahoo.commailto:vinayak_...@yahoo.com To: Online Study ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] lan qos- cos 5 threshold 1 in queue 1 doesn't show in running config Message-ID: 1350178810.93468.yahoomail...@web164602.mail.gq1.yahoo.commailto:1350178810.93468.yahoomail...@web164602.mail.gq1.yahoo.com Content-Type: text/plain; charset=iso-8859-1 hi guys, i was wondering whether i am doing right way of doing lan qos or not ?? the requirements are assign cos 5 to priority queue , cos 3 4 ?to queue 2 with 60% exceed of cos 4 should be dropped. so here is my configuration for that mls qos? mls qos srr-queue output cos-map queue 1 threshold 1 5 mls qos srr-queue output cos-map queue 2 threshold 2 3 mls qos srr-queue output cos-map queue 2 threshold 1 4 mls qos queue-set output 2 threshold 3 60 100 100 272 when i issued show run | i ?mls commands, i see every ?mls qos command except the cos 5 which is assigned to q1 t1. ?Is my approach is correct in dealing this question correctly?? does it matter whether we assign cos values to t1 or t2 or t3 in the queues??? your input is much appreciated. thank you krishna. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] lan qos- cos 5 threshold 1 in queue 1 doesn't show in running config
hi guys, i was wondering whether i am doing right way of doing lan qos or not ?? the requirements are assign cos 5 to priority queue , cos 3 4 to queue 2 with 60% exceed of cos 4 should be dropped. so here is my configuration for that mls qos mls qos srr-queue output cos-map queue 1 threshold 1 5 mls qos srr-queue output cos-map queue 2 threshold 2 3 mls qos srr-queue output cos-map queue 2 threshold 1 4 mls qos queue-set output 2 threshold 3 60 100 100 272 when i issued show run | i mls commands, i see every mls qos command except the cos 5 which is assigned to q1 t1. Is my approach is correct in dealing this question correctly?? does it matter whether we assign cos values to t1 or t2 or t3 in the queues??? your input is much appreciated. thank you krishna.___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN Qos Question
I think you can manipulate the queue size by issuing the command mls qos input priority 1 bandwidth 15 show mls qos input should have something like 3 columns with queue, 1 and 2 then underneath queue will be priority, and under 1 would be 15 On Mon, Sep 3, 2012 at 9:14 PM, Dan Quinlan (daquinla) daqui...@cisco.comwrote: Threshold values are not referring to bandwidth - the refer to queue depth (or buffers). The 3750 has buffers reserved per port and a pool of shared buffers, hence why the value can be greater than 100%. If the question asks to address output traffic based on bandwidth, you need to focus on shape and share commands. If it wants you to address traffic based on queue depth, you need to focus on thresholds. DQ d...@cisco.com On Sep 3, 2012, at 11:36 AM, Jason Murray murr...@usa.com wrote: Ok so threshold is used a little differently. So yes default auto qos config queue 1 the priority queue has a threshold of 100 percent or more. I myself do really get the whole more than 100% but don't know if it matters so let me give an example of how to use threshold. So lets say for example you are to assign COS 2, 6 and 7 to que 4. And it also states if the link becomes 45 percent saturated then start dropping cos 6. You need to use thresholds to accomplish this So first you need to assign those cos values to queue four also keeping in mind that second requirement of dropping cos 6 once the link is 45 percent saturated. mls qos srr-queue output dscp-map queue 4 threshold 3 2 7 mls qos srr-queue output dscp-map queue 4 threshold 2 6 Now you notice how I split the COS values out between thresholds but they are still assigned to queue 4. The next command will address that mls qos queue-set output 2 threshold 2 100 100 100 45 Ok lets explain this last one so output 2 corresponds to the queue set that is assigned to that particular port so in this case queue set 2 Threshold 2 matches up with the the second command so that only affects COS 6 in queue 4 and not anything cos values assigned to queue 4. Now we assign those configurations to the interface by using the queue-set command int f1/0/1 queue-set 2 So that's what thresholds have to do with it. Jason - Original Message - From: Krishna Sent: 09/02/12 12:00 AM To: murr...@usa.com, Randall Crumm, Dan Quinlan \(daquinla\) Subject: Re: [OSL | CCIE_Voice] LAN Qos Question jason, reg: If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Isn't it queue 1 takes whatever the value defined in the threshold i.e. for example mls qos queue-set output 1 threshold 1 138 138 92 138, this takes queue 1 to 138%, and once it is over it comes back to share mode, since the priority queue overwritten the shape, and left over is share value whatever defined at the interface level... please correct me if i m wrong.. thank you krishna. -- *From:* murr...@usa.com murr...@usa.com *To:* murr...@usa.com; Randall Crumm rrcr...@yahoo.com; Dan Quinlan (daquinla) daqui...@cisco.com *Cc:* ccie_voice@onlinestudylist.com *Sent:* Saturday, September 1, 2012 8:20 PM *Subject:* Re: [OSL | CCIE_Voice] LAN Qos Question Priority goes in this order Priority queue out Shape Share If lets say for example you want cos 5 to be in the priority queue but it also states that cos 5 should have no more than 25 percent of the bandwidth. Of course in the mappings you need to put cos 5 in que 1. Then you need to disable priority que out and use shape to give cos 5 only 25 percent (shape 4 0 0 0). If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Make sure you read the question carefully to see what it is wanting. Jason On 9/1/12 at 10:56 AM, Randall Crumm wrote: Hi, I have a question about LAN QoS. If I do shape and share on an interface do I have to disable priority queue out on the interface? Cheers, Randall ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.platinumplacement.com/ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN Qos Question
sorry sent before complete, this is input queueing so not sure for output as don't have access to verify On Tue, Sep 4, 2012 at 10:50 AM, Bill Lake whl...@gmail.com wrote: I think you can manipulate the queue size by issuing the command mls qos input priority 1 bandwidth 15 show mls qos input should have something like 3 columns with queue, 1 and 2 then underneath queue will be priority, and under 1 would be 15 On Mon, Sep 3, 2012 at 9:14 PM, Dan Quinlan (daquinla) daqui...@cisco.com wrote: Threshold values are not referring to bandwidth - the refer to queue depth (or buffers). The 3750 has buffers reserved per port and a pool of shared buffers, hence why the value can be greater than 100%. If the question asks to address output traffic based on bandwidth, you need to focus on shape and share commands. If it wants you to address traffic based on queue depth, you need to focus on thresholds. DQ d...@cisco.com On Sep 3, 2012, at 11:36 AM, Jason Murray murr...@usa.com wrote: Ok so threshold is used a little differently. So yes default auto qos config queue 1 the priority queue has a threshold of 100 percent or more. I myself do really get the whole more than 100% but don't know if it matters so let me give an example of how to use threshold. So lets say for example you are to assign COS 2, 6 and 7 to que 4. And it also states if the link becomes 45 percent saturated then start dropping cos 6. You need to use thresholds to accomplish this So first you need to assign those cos values to queue four also keeping in mind that second requirement of dropping cos 6 once the link is 45 percent saturated. mls qos srr-queue output dscp-map queue 4 threshold 3 2 7 mls qos srr-queue output dscp-map queue 4 threshold 2 6 Now you notice how I split the COS values out between thresholds but they are still assigned to queue 4. The next command will address that mls qos queue-set output 2 threshold 2 100 100 100 45 Ok lets explain this last one so output 2 corresponds to the queue set that is assigned to that particular port so in this case queue set 2 Threshold 2 matches up with the the second command so that only affects COS 6 in queue 4 and not anything cos values assigned to queue 4. Now we assign those configurations to the interface by using the queue-set command int f1/0/1 queue-set 2 So that's what thresholds have to do with it. Jason - Original Message - From: Krishna Sent: 09/02/12 12:00 AM To: murr...@usa.com, Randall Crumm, Dan Quinlan \(daquinla\) Subject: Re: [OSL | CCIE_Voice] LAN Qos Question jason, reg: If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Isn't it queue 1 takes whatever the value defined in the threshold i.e. for example mls qos queue-set output 1 threshold 1 138 138 92 138, this takes queue 1 to 138%, and once it is over it comes back to share mode, since the priority queue overwritten the shape, and left over is share value whatever defined at the interface level... please correct me if i m wrong.. thank you krishna. -- *From:* murr...@usa.com murr...@usa.com *To:* murr...@usa.com; Randall Crumm rrcr...@yahoo.com; Dan Quinlan (daquinla) daqui...@cisco.com *Cc:* ccie_voice@onlinestudylist.com *Sent:* Saturday, September 1, 2012 8:20 PM *Subject:* Re: [OSL | CCIE_Voice] LAN Qos Question Priority goes in this order Priority queue out Shape Share If lets say for example you want cos 5 to be in the priority queue but it also states that cos 5 should have no more than 25 percent of the bandwidth. Of course in the mappings you need to put cos 5 in que 1. Then you need to disable priority que out and use shape to give cos 5 only 25 percent (shape 4 0 0 0). If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Make sure you read the question carefully to see what it is wanting. Jason On 9/1/12 at 10:56 AM, Randall Crumm wrote: Hi, I have a question about LAN QoS. If I do shape and share on an interface do I have to disable priority queue out on the interface? Cheers, Randall ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.platinumplacement.com/ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please
Re: [OSL | CCIE_Voice] LAN Qos Question
Ok so threshold is used a little differently. So yes default auto qos config queue 1 the priority queue has a threshold of 100 percent or more. I myself do really get the whole more than 100% but don't know if it matters so let me give an example of how to use threshold. So lets say for example you are to assign COS 2, 6 and 7 to que 4. And it also states if the link becomes 45 percent saturated then start dropping cos 6. You need to use thresholds to accomplish this So first you need to assign those cos values to queue four also keeping in mind that second requirement of dropping cos 6 once the link is 45 percent saturated. mls qos srr-queue output dscp-map queue 4 threshold 3 2 7 mls qos srr-queue output dscp-map queue 4 threshold 2 6 Now you notice how I split the COS values out between thresholds but they are still assigned to queue 4. The next command will address that mls qos queue-set output 2 threshold 2 100 100 100 45 Ok lets explain this last one so output 2 corresponds to the queue set that is assigned to that particular port so in this case queue set 2 Threshold 2 matches up with the the second command so that only affects COS 6 in queue 4 and not anything cos values assigned to queue 4. Now we assign those configurations to the interface by using the queue-set command int f1/0/1 queue-set 2 So that's what thresholds have to do with it. Jason - Original Message - From: Krishna Sent: 09/02/12 12:00 AM To: murr...@usa.com, Randall Crumm, Dan Quinlan \(daquinla\) Subject: Re: [OSL | CCIE_Voice] LAN Qos Question jason, reg: If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Isn't it queue 1 takes whatever the value defined in the threshold i.e. for example mls qos queue-set output 1 threshold 1 138 138 92 138, this takes queue 1 to 138%, and once it is over it comes back to share mode, since the priority queue overwritten the shape, and left over is share value whatever defined at the interface level... please correct me if i m wrong.. thank you krishna. - From: murr...@usa.com murr...@usa.com To: murr...@usa.com; Randall Crumm rrcr...@yahoo.com; Dan Quinlan (daquinla) daqui...@cisco.com Cc: ccie_voice@onlinestudylist.com Sent: Saturday, September 1, 2012 8:20 PM Subject: Re: [OSL | CCIE_Voice] LAN Qos Question Priority goes in this order Priority queue out Shape Share If lets say for example you want cos 5 to be in the priority queue but it also states that cos 5 should have no more than 25 percent of the bandwidth. Of course in the mappings you need to put cos 5 in que 1. Then you need to disable priority que out and use shape to give cos 5 only 25 percent (shape 4 0 0 0). If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Make sure you read the question carefully to see what it is wanting. Jason On 9/1/12 at 10:56 AM, Randall Crumm wrote: Hi, I have a question about LAN QoS. If I do shape and share on an interface do I have to disable priority queue out on the interface? Cheers, Randall ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com http://www.ipexpert.com/ Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.platinumplacement.com/ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN Qos Question
Threshold values are not referring to bandwidth - the refer to queue depth (or buffers). The 3750 has buffers reserved per port and a pool of shared buffers, hence why the value can be greater than 100%. If the question asks to address output traffic based on bandwidth, you need to focus on shape and share commands. If it wants you to address traffic based on queue depth, you need to focus on thresholds. DQ d...@cisco.commailto:d...@cisco.com On Sep 3, 2012, at 11:36 AM, Jason Murray murr...@usa.commailto:murr...@usa.com wrote: Ok so threshold is used a little differently. So yes default auto qos config queue 1 the priority queue has a threshold of 100 percent or more. I myself do really get the whole more than 100% but don't know if it matters so let me give an example of how to use threshold. So lets say for example you are to assign COS 2, 6 and 7 to que 4. And it also states if the link becomes 45 percent saturated then start dropping cos 6. You need to use thresholds to accomplish this So first you need to assign those cos values to queue four also keeping in mind that second requirement of dropping cos 6 once the link is 45 percent saturated. mls qos srr-queue output dscp-map queue 4 threshold 3 2 7 mls qos srr-queue output dscp-map queue 4 threshold 2 6 Now you notice how I split the COS values out between thresholds but they are still assigned to queue 4. The next command will address that mls qos queue-set output 2 threshold 2 100 100 100 45 Ok lets explain this last one so output 2 corresponds to the queue set that is assigned to that particular port so in this case queue set 2 Threshold 2 matches up with the the second command so that only affects COS 6 in queue 4 and not anything cos values assigned to queue 4. Now we assign those configurations to the interface by using the queue-set command int f1/0/1 queue-set 2 So that's what thresholds have to do with it. Jason - Original Message - From: Krishna Sent: 09/02/12 12:00 AM To: murr...@usa.commailto:murr...@usa.com, Randall Crumm, Dan Quinlan \(daquinla\) Subject: Re: [OSL | CCIE_Voice] LAN Qos Question jason, reg: If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Isn't it queue 1 takes whatever the value defined in the threshold i.e. for example mls qos queue-set output 1 threshold 1 138 138 92 138, this takes queue 1 to 138%, and once it is over it comes back to share mode, since the priority queue overwritten the shape, and left over is share value whatever defined at the interface level... please correct me if i m wrong.. thank you krishna. From: murr...@usa.commailto:murr...@usa.com murr...@usa.commailto:murr...@usa.com To: murr...@usa.commailto:murr...@usa.com; Randall Crumm rrcr...@yahoo.commailto:rrcr...@yahoo.com; Dan Quinlan (daquinla) daqui...@cisco.commailto:daqui...@cisco.com Cc: ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Sent: Saturday, September 1, 2012 8:20 PM Subject: Re: [OSL | CCIE_Voice] LAN Qos Question Priority goes in this order Priority queue out Shape Share If lets say for example you want cos 5 to be in the priority queue but it also states that cos 5 should have no more than 25 percent of the bandwidth. Of course in the mappings you need to put cos 5 in que 1. Then you need to disable priority que out and use shape to give cos 5 only 25 percent (shape 4 0 0 0). If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Make sure you read the question carefully to see what it is wanting. Jason On 9/1/12 at 10:56 AM, Randall Crumm wrote: Hi, I have a question about LAN QoS. If I do shape and share on an interface do I have to disable priority queue out on the interface? Cheers, Randall ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.comhttp://www.ipexpert.com/ Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.comhttp://www.platinumplacement.com/ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN Qos Question
Priority goes in this order Priority queue out Shape Share If lets say for example you want cos 5 to be in the priority queue but it also states that cos 5 should have no more than 25 percent of the bandwidth. Of course in the mappings you need to put cos 5 in que 1. Then you need to disable priority que out and use shape to give cos 5 only 25 percent (shape 4 0 0 0). If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Make sure you read the question carefully to see what it is wanting. Jason On 9/1/12 at 10:56 AM, Randall Crumm wrote: Hi, I have a question about LAN QoS. If I do shape and share on an interface do I have to disable priority queue out on the interface? Cheers, Randall ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN Qos Question
jason, reg: If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Isn't it queue 1 takes whatever the value defined in the threshold i.e. for example mls qos queue-set output 1 threshold 1 138 138 92 138, this takes queue 1 to 138%, and once it is over it comes back to share mode, since the priority queue overwritten the shape, and left over is share value whatever defined at the interface level... please correct me if i m wrong.. thank you krishna. From: murr...@usa.com murr...@usa.com To: murr...@usa.com; Randall Crumm rrcr...@yahoo.com; Dan Quinlan (daquinla) daqui...@cisco.com Cc: ccie_voice@onlinestudylist.com Sent: Saturday, September 1, 2012 8:20 PM Subject: Re: [OSL | CCIE_Voice] LAN Qos Question Priority goes in this order Priority queue out Shape Share If lets say for example you want cos 5 to be in the priority queue but it also states that cos 5 should have no more than 25 percent of the bandwidth. Of course in the mappings you need to put cos 5 in que 1. Then you need to disable priority que out and use shape to give cos 5 only 25 percent (shape 4 0 0 0). If you leave priority que out configured along with shape of 25 percent then essentially que 1 can have 100 percent of the bandwidth if needs it. Make sure you read the question carefully to see what it is wanting. Jason On 9/1/12 at 10:56 AM, Randall Crumm wrote: Hi, I have a question about LAN QoS. If I do shape and share on an interface do I have to disable priority queue out on the interface? Cheers, Randall ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN QoS
Hi all Just want to get some advise regarding LAN QoS. Let say if the question ask to apply priority queue and specify certain drop % based on a COS value to the interface that connect to the router. What would you do with the interface that connecting to the phone? The reason I asked is because if auto-qos is used on the phone ports, a few config line will be generated, such as policy map etc. Do you normally leave those in there on the phone ports? Cheers Vega ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QoS, cBarge in CME SRST
If nothing specific is required for traffic from/to the phones, I would not do anything there. Run the auto qos on an unused port. Thanks, /Baktha -- Message: 1 Date: Wed, 22 Feb 2012 02:13:29 -0800 (PST) From: Vega Wong vega2...@yahoo.com.au To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] LAN QoS Message-ID: 1329905609.25199.yahoomailclas...@web65905.mail.ac4.yahoo.com Content-Type: text/plain; charset=utf-8 Hi all Just want to get some advise regarding LAN QoS. Let say if the question ask to apply priority queue and specify certain drop % based on a COS value to the interface that connect to the router. What would you do with the interface that connecting to the phone? The reason I asked is because if auto-qos is used on the phone ports, a few config line will be generated, such as policy map etc. Do you normally leave those in there on the phone ports? Cheers Vega -- next part -- An HTML attachment was scrubbed... URL: /archives/ccie_voice/attachments/20120222/4edd7d04/attachment-0001.html Pls make sure you have configured the ephone-dns to be octo-line thanks, /Baktha -- Message: 2 Date: Wed, 22 Feb 2012 12:35:57 + From: Rynard Coetzee rynard.coet...@bytes.co.za To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] cBarge in CME SRST Message-ID: 97D19F256B859A48A6A93E8A9210E52A17AF8BBE@BYTESEXCH2K10N1.bytes.local Content-Type: text/plain; charset=us-ascii Hi All I have an issue to get the cBarge to work when my H323 GW goes into SRST ,the shared line shows up on both phones ,but when I have an active call on one phone ,I don`t see the number on the other phone ,and the other phone does not go into remote in use state when I press the shared line button. I have privacy turned off under the ephones and also under the telephony service. Also my CFB is registered to the router when in srst mode ,I am able to make a normal ad-hoc conference when in srst mode. Any ideas ? Regards Rynard -- next part -- An HTML attachment was scrubbed... URL: /archives/ccie_voice/attachments/20120222/4065d064/attachment-0001.html -- Message: 3 Date: Wed, 22 Feb 2012 13:58:15 +0100 From: Farkas P?ter wormh...@sch.bme.hu To: Rynard Coetzee rynard.coet...@bytes.co.za Cc: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] cBarge in CME SRST Message-ID: 770ca7cc57a8.4f44f...@sch.bme.hu Content-Type: text/plain; charset=us-ascii Have you tried to turn off privacy and enable remote-in-use sofktkey through an ephone-template attached to the ephone? Privacy setting on ephone has a bug in SRST mode. Peter - Original Message - From: Rynard Coetzee rynard.coet...@bytes.co.za Date: Wednesday, February 22, 2012 1:51 pm Subject: [OSL | CCIE_Voice] cBarge in CME SRST To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Hi All I have an issue to get the cBarge to work when my H323 GW goes into SRST ,the shared line shows up on both phones ,but when I have an active call on one phone ,I don`t see the number on the other phone ,and the other phone does not go into remote in use state when I press the shared line button. I have privacy turned off under the ephones and also under the telephony service. Also my CFB is registered to the router when in srst mode ,I am able to make a normal ad-hoc conference when in srst mode. Any ideas ? Regards Rynard ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN QoS egress queue setting
Hi experts I am working on the topic of LAN QoS. I understand we will be given tasks to modify the setting on the egress queues of the switches. The setting includes, buffer sizes, shape and share setting etc. My question is, is there a best practise on what values these figures should change to? for example, if the task ask to change the buffer size to 50% for queue 2, what should be the buffer size set to for Q1, Q3 and Q4 in the queue-set? thanks ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QoS egress queue setting
Vega, You need to follow best practices as per SRND. Thanks Shrini From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Vega Wong Sent: Monday, November 07, 2011 9:39 PM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] LAN QoS egress queue setting Hi experts I am working on the topic of LAN QoS. I understand we will be given tasks to modify the setting on the egress queues of the switches. The setting includes, buffer sizes, shape and share setting etc. My question is, is there a best practise on what values these figures should change to? for example, if the task ask to change the buffer size to 50% for queue 2, what should be the buffer size set to for Q1, Q3 and Q4 in the queue-set? thanks ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN qos question
Hi Guys I am doing a lab and little confused with the proposed solution. The requirement is that on interface queue 2 queue 3 queue 4 should share bandwidth as 20 40 40 percentage. Now what's the best answer. Interface f1/0/1 Srr-queue bandwidth share 1 2 4 4 Or Interface f1/0/1 Srr-queue bandwidth share 1 20 40 40 I think I am little confused with how to set the weights right. Need your advice here .. Also if the question doesn't mention anything do we need to put shape 3 0 0 0 command regardless ? Thanks in advance Sent from my iPad ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN qos question
The weights are relative to each other. Assuming priority queue is enabled on queue 1 and having Srr-queue bandwidth share 1 2 4 4 would mean: Queue 2 = 2/10 or 20% Queue 3 = 4/10 or 40% Queue 4 = 4/10 or 40% Both ways get the same results. There is no reason for the shape 3 0 0 0 unless required to shape queue 1 and you are no doing priority queuing. HTH Chris On Sat, Oct 1, 2011 at 5:04 AM, Nowork_onlyfun noworkonlyf...@gmail.comwrote: Hi Guys I am doing a lab and little confused with the proposed solution. The requirement is that on interface queue 2 queue 3 queue 4 should share bandwidth as 20 40 40 percentage. Now what's the best answer. Interface f1/0/1 Srr-queue bandwidth share 1 2 4 4 Or Interface f1/0/1 Srr-queue bandwidth share 1 20 40 40 I think I am little confused with how to set the weights right. Need your advice here .. Also if the question doesn't mention anything do we need to put shape 3 0 0 0 command regardless ? Thanks in advance Sent from my iPad ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN qos question
Either answer yields the same results. 2+4+4=10. 2/10 = 20%. 20+40+40=100. 20/100 = 20%. So either answer is correct. If the question doesn't mention shaping, I wouldn't add it. Does it ask that you enable the priority queue? John -Original Message- From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Nowork_onlyfun Sent: Saturday, October 01, 2011 5:05 AM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] LAN qos question Hi Guys I am doing a lab and little confused with the proposed solution. The requirement is that on interface queue 2 queue 3 queue 4 should share bandwidth as 20 40 40 percentage. Now what's the best answer. Interface f1/0/1 Srr-queue bandwidth share 1 2 4 4 Or Interface f1/0/1 Srr-queue bandwidth share 1 20 40 40 I think I am little confused with how to set the weights right. Need your advice here .. Also if the question doesn't mention anything do we need to put shape 3 0 0 0 command regardless ? Thanks in advance Sent from my iPad ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QoS
i think, you should use the highest available auto configured threshold for that queue. -adil On Wed, Jun 1, 2011 at 11:23 AM, Cristobal Priego cristobalpri...@gmail.com wrote: hello all, I have a question for you guys hopefully you can help me understand, this is way too confusing for me when i issue auto qos on a 3750 switch this is how the config will look like mls qos srr-queue output cos-map queue 1 threshold 3 5 mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7 mls qos srr-queue output cos-map queue 3 threshold 3 2 4 mls qos srr-queue output cos-map queue 4 threshold 2 1 mls qos srr-queue output cos-map queue 4 threshold 3 0 mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45 46 47 mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31 mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55 mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63 mls qos srr-queue output dscp-map queue 3 threshold 3 16 17 18 19 20 21 22 23 mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37 38 39 mls qos srr-queue output dscp-map queue 4 threshold 1 8 mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15 mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7 mls qos queue-set output 1 threshold 1 138 138 92 138 mls qos queue-set output 1 threshold 2 138 138 92 400 mls qos queue-set output 1 threshold 3 36 77 100 318 mls qos queue-set output 1 threshold 4 20 50 67 400 mls qos queue-set output 2 threshold 1 149 149 100 149 mls qos queue-set output 2 threshold 2 118 118 100 235 mls qos queue-set output 2 threshold 3 41 68 100 272 mls qos queue-set output 2 threshold 4 42 72 100 242 mls qos queue-set output 1 buffers 10 10 26 54 mls qos queue-set output 2 buffers 16 6 17 61 mls qos when i'm asked to change the COS or DSCP values from Q to Q how do I know which threshold to use ? for exambple if i'm asked to configure the COS valus 2,3 to Queue 4 how do i know on which threshold withing Q4 ? does my question make sense ? this part of the threshold is very confusing for me hopefully you can help me out thanks ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com -- .. . . _7___|___|_|_|adil.sha...@gmail.com . . ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QoS
If they are asking to move Queues, then I don't think it matters. I would use the same threshold as the current queue. So for your example move 2 and 4 to queue 4 threshold 3. Don't forget to do the DSCP values to match. Sam. On Wed, Jun 1, 2011 at 8:44 PM, Adil Shaikh adil.sha...@gmail.com wrote: i think, you should use the highest available auto configured threshold for that queue. -adil On Wed, Jun 1, 2011 at 11:23 AM, Cristobal Priego cristobalpri...@gmail.com wrote: hello all, I have a question for you guys hopefully you can help me understand, this is way too confusing for me when i issue auto qos on a 3750 switch this is how the config will look like mls qos srr-queue output cos-map queue 1 threshold 3 5 mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7 mls qos srr-queue output cos-map queue 3 threshold 3 2 4 mls qos srr-queue output cos-map queue 4 threshold 2 1 mls qos srr-queue output cos-map queue 4 threshold 3 0 mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45 46 47 mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31 mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55 mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63 mls qos srr-queue output dscp-map queue 3 threshold 3 16 17 18 19 20 21 22 23 mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37 38 39 mls qos srr-queue output dscp-map queue 4 threshold 1 8 mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15 mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7 mls qos queue-set output 1 threshold 1 138 138 92 138 mls qos queue-set output 1 threshold 2 138 138 92 400 mls qos queue-set output 1 threshold 3 36 77 100 318 mls qos queue-set output 1 threshold 4 20 50 67 400 mls qos queue-set output 2 threshold 1 149 149 100 149 mls qos queue-set output 2 threshold 2 118 118 100 235 mls qos queue-set output 2 threshold 3 41 68 100 272 mls qos queue-set output 2 threshold 4 42 72 100 242 mls qos queue-set output 1 buffers 10 10 26 54 mls qos queue-set output 2 buffers 16 6 17 61 mls qos when i'm asked to change the COS or DSCP values from Q to Q how do I know which threshold to use ? for exambple if i'm asked to configure the COS valus 2,3 to Queue 4 how do i know on which threshold withing Q4 ? does my question make sense ? this part of the threshold is very confusing for me hopefully you can help me out thanks ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com -- .. . . _7___|___|_|_|adil.sha...@gmail.com . . ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN QoS
hello all, I have a question for you guys hopefully you can help me understand, this is way too confusing for me when i issue auto qos on a 3750 switch this is how the config will look like mls qos srr-queue output cos-map queue 1 threshold 3 5 mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7 mls qos srr-queue output cos-map queue 3 threshold 3 2 4 mls qos srr-queue output cos-map queue 4 threshold 2 1 mls qos srr-queue output cos-map queue 4 threshold 3 0 mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45 46 47 mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31 mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55 mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63 mls qos srr-queue output dscp-map queue 3 threshold 3 16 17 18 19 20 21 22 23 mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37 38 39 mls qos srr-queue output dscp-map queue 4 threshold 1 8 mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15 mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7 mls qos queue-set output 1 threshold 1 138 138 92 138 mls qos queue-set output 1 threshold 2 138 138 92 400 mls qos queue-set output 1 threshold 3 36 77 100 318 mls qos queue-set output 1 threshold 4 20 50 67 400 mls qos queue-set output 2 threshold 1 149 149 100 149 mls qos queue-set output 2 threshold 2 118 118 100 235 mls qos queue-set output 2 threshold 3 41 68 100 272 mls qos queue-set output 2 threshold 4 42 72 100 242 mls qos queue-set output 1 buffers 10 10 26 54 mls qos queue-set output 2 buffers 16 6 17 61 mls qos when i'm asked to change the COS or DSCP values from Q to Q how do I know which threshold to use ? for exambple if i'm asked to configure the COS valus 2,3 to Queue 4 how do i know on which threshold withing Q4 ? does my question make sense ? this part of the threshold is very confusing for me hopefully you can help me out thanks ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] LAN QoS
Use the auto configured threshold is fine and modify the cos of the particular q. What you are looking at is the dscp-map to q. duy ccie #27737 voice tmobile g2 On May 31, 2011 9:21 PM, Cristobal Priego cristobalpri...@gmail.com wrote: hello all, I have a question for you guys hopefully you can help me understand, this is way too confusing for me when i issue auto qos on a 3750 switch this is how the config will look like mls qos srr-queue output cos-map queue 1 threshold 3 5 mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7 mls qos srr-queue output cos-map queue 3 threshold 3 2 4 mls qos srr-queue output cos-map queue 4 threshold 2 1 mls qos srr-queue output cos-map queue 4 threshold 3 0 mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45 46 47 mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31 mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55 mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63 mls qos srr-queue output dscp-map queue 3 threshold 3 16 17 18 19 20 21 22 23 mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37 38 39 mls qos srr-queue output dscp-map queue 4 threshold 1 8 mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15 mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7 mls qos queue-set output 1 threshold 1 138 138 92 138 mls qos queue-set output 1 threshold 2 138 138 92 400 mls qos queue-set output 1 threshold 3 36 77 100 318 mls qos queue-set output 1 threshold 4 20 50 67 400 mls qos queue-set output 2 threshold 1 149 149 100 149 mls qos queue-set output 2 threshold 2 118 118 100 235 mls qos queue-set output 2 threshold 3 41 68 100 272 mls qos queue-set output 2 threshold 4 42 72 100 242 mls qos queue-set output 1 buffers 10 10 26 54 mls qos queue-set output 2 buffers 16 6 17 61 mls qos when i'm asked to change the COS or DSCP values from Q to Q how do I know which threshold to use ? for exambple if i'm asked to configure the COS valus 2,3 to Queue 4 how do i know on which threshold withing Q4 ? does my question make sense ? this part of the threshold is very confusing for me hopefully you can help me out thanks ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] Lan QoS
Hey guys, Just wanted to clear this up. So, If I use mls qos trust cos on an interface, from then on all the queue map, threshold map will be based on Cos-Dscp table? That is also the same for mls qos trust dscp dscp-cos tables will be used to convert layer2 markings to layer3 and vice versa respectively? MQC will be also based on the either trust or set statement? I might not have been clear with my question. Let me know if you need me to re-word it. Thanks, Emin ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] Lan QoS
The MLS QOS trust commands are used to determine how an internal DSCP value is derived which will be used in physical queue assignments. You either 1) Trust the incomming L2 COS value with the mls qos trust cos command which intern uses the COS-DSCP map to derive the internal DSCP value, or 2) you Trust the incomming DSCP value with the mls qos trust dscp command which intern uses the incomming DSCP value as the internal DSCP value. There is also a 3rd option to not trust anything incomming but use your own class maps to classify, policy maps to mark and this will be used to derive the internal DSCP value which determines the physical queue the packet gets put in to. Another note is that the mls qos trust cos/dscp are mutually exclusive, meaning it is one or the other (not both). If both are specified in the config the one listed last in the config wins. Also, I've seen in many configurations the mls qos trust command accompanied with Service policy command that has it own class-maps (for classification) and policy-maps for marking, in this case the mls qos trust statements are ignored and the class-maps/policy-maps from the service policy command are used. In summary your thinking is correct, you will use either the cos-dscp maps or trust the incoming DSCP value or don't trust anything, to derive the internal dscp value (which is everything). This is covered in more detail in the Switch Configuration Guide for each IOS version of each switch. These maps are either defined per port (as in the 3550) or globally via the queue set command (as on the 2960, 2560, 3750 switches). Brian On 5/8/2011 4:47 PM, Emin Guliyev wrote: Hey guys, Just wanted to clear this up. So, If I use mls qos trust cos on an interface, from then on all the queue map, threshold map will be based on Cos-Dscp table? That is also the same for mls qos trust dscp dscp-cos tables will be used to convert layer2 markings to layer3 and vice versa respectively? MQC will be also based on the either trust or set statement? I might not have been clear with my question. Let me know if you need me to re-word it. Thanks, Emin ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] LAN QoS Priority and buffer size
Hi Daniel, I absolutely agree with you on the first part, regarding that enabling the priority (expedite) queue will exclude queue 1 from the SRR shaping and sharing. However, I don’t think that it is possible to control the bandwidth percentages using the buffer size allocation “mls qos queue-set output 1 buffers 10 10 26 54”, simply because of the fact that the buffer is used to store the excess traffic when the input rate is higher than the output rate of a certain traffic. To illustrate my point let me introduce an example 3750 fastethernet (100Mb) 10 % are allocated to priority traffic 50 Mb Average Total Input rate of priority traffic On the above example, at the output the priority traffic can (theoretically) go up to full link speed 100 Mb, so apparently the input rate is not exceeding the output rate and the average output rate would be equal to the input which is 50 Mb (50 % not just the 10 % of the buffer size). As a matter of fact the buffer in this case is not expected even to fill the 10 %, it would just fill a small percent to accommodate with traffic spikes and the small processing delay. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] LAN QoS Priority and buffer size
Giving it a second thought I have to agree with you. I might have misinterpreted what Vik said (sorry Vik). So it seems it's impossible to have both priority-queue out and some form of shaping for this traffic? regards On Tue, Aug 3, 2010 at 3:59 PM, Wafik Maher wafikma...@gmail.com wrote: ut the priority traffic can (theoretically) go up to full link speed 100 Mb, so apparently the input rate is not exceeding the output rate and the average output rate would be equal to the input which is 50 Mb (50 % not just the 10 % of the buffer size). As a matter of fact the buffer in this case is not expected even to fill the 10 %, it would just fill a small percent to accommodate with traffic spikes and the small proce ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] LAN QoS Priority and buffer size
Thanks very much for this. I will read more carefully about this topic looking carefully for the words in the documentation I could not find to come with some conclusion as yours. Your answer makes sense and it is very objective and I appreaciate that because this topic has beend discussed many times here but with very loose ideas. Do you mind sharing with us what path led you to this conclusion? Was it a document you read that explicitly said that the buffers are used to store the excess traffic and not to provide the physical pool of memory allocation to be used to each queue? Again I thank you for your objective and illustrative help! Daniel On Wed, Aug 4, 2010 at 1:59 AM, Wafik Maher wafikma...@gmail.com wrote: Hi Daniel, I absolutely agree with you on the first part, regarding that enabling the priority (expedite) queue will exclude queue 1 from the SRR shaping and sharing. However, I don’t think that it is possible to control the bandwidth percentages using the buffer size allocation “mls qos queue-set output 1 buffers 10 10 26 54”, simply because of the fact that the buffer is used to store the excess traffic when the input rate is higher than the output rate of a certain traffic. To illustrate my point let me introduce an example 3750 fastethernet (100Mb) 10 % are allocated to priority traffic 50 Mb Average Total Input rate of priority traffic On the above example, at the output the priority traffic can (theoretically) go up to full link speed 100 Mb, so apparently the input rate is not exceeding the output rate and the average output rate would be equal to the input which is 50 Mb (50 % not just the 10 % of the buffer size). As a matter of fact the buffer in this case is not expected even to fill the 10 %, it would just fill a small percent to accommodate with traffic spikes and the small processing delay. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] LAN QoS Priority and buffer size
Hi Wafik, Thanks for your great comments, just a little confuse for the two command priority-queue output and srr-queue bandwidth shape My question is if regarding that enabling the priority (expedite) queue will exclude queue 1 from the SRR shaping and sharing. why there is a example in the Cisco document showing priority-queue output and srr-queue command under the same interface? Does it mean priority-queue output need to work with srr-queue bandwidth shape together. priority-queue output: enable priority queue function srr-queue bandwidth shape: limit the bandwidth of priority queue. Please correct me, if I am wrong. Thanks. Cheers, Vincent 2010/8/4 Daniel Berlinski dberlin...@gmail.com Thanks very much for this. I will read more carefully about this topic looking carefully for the words in the documentation I could not find to come with some conclusion as yours. Your answer makes sense and it is very objective and I appreaciate that because this topic has beend discussed many times here but with very loose ideas. Do you mind sharing with us what path led you to this conclusion? Was it a document you read that explicitly said that the buffers are used to store the excess traffic and not to provide the physical pool of memory allocation to be used to each queue? Again I thank you for your objective and illustrative help! Daniel On Wed, Aug 4, 2010 at 1:59 AM, Wafik Maher wafikma...@gmail.com wrote: Hi Daniel, I absolutely agree with you on the first part, regarding that enabling the priority (expedite) queue will exclude queue 1 from the SRR shaping and sharing. However, I don’t think that it is possible to control the bandwidth percentages using the buffer size allocation “mls qos queue-set output 1 buffers 10 10 26 54”, simply because of the fact that the buffer is used to store the excess traffic when the input rate is higher than the output rate of a certain traffic. To illustrate my point let me introduce an example 3750 fastethernet (100Mb) 10 % are allocated to priority traffic 50 Mb Average Total Input rate of priority traffic On the above example, at the output the priority traffic can (theoretically) go up to full link speed 100 Mb, so apparently the input rate is not exceeding the output rate and the average output rate would be equal to the input which is 50 Mb (50 % not just the 10 % of the buffer size). As a matter of fact the buffer in this case is not expected even to fill the 10 %, it would just fill a small percent to accommodate with traffic spikes and the small processing delay. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] LAN QoS Priority and buffer size
-update Matthew Berry **Sent from my iPhone** Skype/Twitter: ciscovoiceguru Google Voice: +1 612 424 5044 On Jul 23, 2010, at 12:31, Brian Valentine bkvalent...@gmail.com wrote: I'm working on Vol2 Lab7 Task2.4. The task involves the following: HQ phone 2 dials 914158884343. Prefer to use TEHO to route the call out BR1. Local telco expects 7 digits. BR1 is an H323 gateway, so CUCM sends it 98884343. The gateway strips the 9 before sending to telco. Second choice gateway is the HQ gateway, which is MGCP. Local telco will expect 11 digits. CUCM would send the gateway 14158884343. Regardless of which gateway the call goes out the HQ Phone 2 display should say: To 4158884343. Got the call routing and redundancy down fine. That's works well enough. The problem is that no matter what I do, it seems to convert the display on HQ Phone 2 to match whatever digit manipulation was required by the egress gateway. The proctor guide says: The display on the Calling phone will be derived from the Route Pattern manipulation although the actual digits the UCM sends to the gateway is determined by the Route List/Route Group Called # transformations. So, I tried that. I tried doing all my digit manipulation on the RL details level and use the XX as the Called Party transformation on the Route Pattern level. Call goes through, but the HQ Phone 2 still displays To: 98884343. Next I tried setting the RL details to leave it as 415888 and used a Called Party Transformation Pattern at the gateway level to convert the call. I got the same result. Call succeeds. The display on HQ Phone 2 shows To: 98884343. What am I missing? Is this task possible? Thanks in advance, Brian ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com -- next part -- An HTML attachment was scrubbed... URL: /archives/ccie_voice/attachments/20100724/467ea239/attachment-0001.html -- Message: 2 Date: Sat, 24 Jul 2010 11:49:23 +1200 From: Daniel Berlinski dberlin...@gmail.com To: osl osl ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] LAN QoS Priority and buffer size Message-ID: aanlkti=7gkgg=n=ptaa-8kbhvmjx3zkp3grre1r4q...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Hello Can someone confirm my understanding. The below question implies the use of priority-queue out inteface command. For adjusting how much bandwidth is given to the egress priority queue of a 3750/3560/2960 switch the interface command: srr-queue bandwidth shape *means nothing* The srr command that tunes the buffer size of memory to be given to queue 1 is the one that will adjust the priority-queue depth required. Feedback please -- next part -- An HTML attachment was scrubbed... URL: /archives/ccie_voice/attachments/20100724/b6894fb0/attachment-0001.html -- Message: 3 Date: Fri, 23 Jul 2010 18:49:37 -0600 From: Randall Saborio ill2...@gmail.com To: Daniel Berlinski dberlin...@gmail.com Cc: osl osl ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] LAN QoS Priority and buffer size Message-ID: aanlktinf533m8b3qwbyocrqfodta4w3oda+yyvk=b...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Hi Daniel, I had to review again my notes and the documentation to tell for sure (wish I knew it out of my head as earlier I was studying a lot of the lan qos theory). You are correct, the srr-queue bandwidth shape means nothing when you configure the priority queue out. As it says on the doc: All four queues participate in the SRR unless the expedite queue is enabled, in which case the first bandwidth weight is ignored and is not used in the ratio calculation. *The expedite queue is a priority queue, and it is serviced until empty* before the other queues are serviced. You enable the expedite queue by using the priority-queue out interface configuration command. So what I get is the settings are ignore completely for the calculation of shared bandwidth for the other queues, and because the queue is serviced until empty. I'm all dizzy today from studying the LAN QoS and still can't say I know it all. :-/ On Fri, Jul 23, 2010 at 5:49 PM, Daniel Berlinski dberlin...@gmail.com wrote: Hello Can someone confirm my understanding. The below question implies the use of priority-queue out inteface command. For adjusting how much bandwidth is given to the egress priority queue of a 3750/3560/2960 switch the interface command: srr-queue bandwidth shape means nothing The srr command that tunes the buffer size of memory to be given to queue 1 is the one that will adjust the priority
[OSL | CCIE_Voice] LAN QoS Priority and buffer size
Hello Can someone confirm my understanding. The below question implies the use of priority-queue out inteface command. For adjusting how much bandwidth is given to the egress priority queue of a 3750/3560/2960 switch the interface command: srr-queue bandwidth shape *means nothing* The srr command that tunes the buffer size of memory to be given to queue 1 is the one that will adjust the priority-queue depth required. Feedback please ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] LAN QoS Priority and buffer size
Hi Daniel, I had to review again my notes and the documentation to tell for sure (wish I knew it out of my head as earlier I was studying a lot of the lan qos theory). You are correct, the srr-queue bandwidth shape means nothing when you configure the priority queue out. As it says on the doc: All four queues participate in the SRR unless the expedite queue is enabled, in which case the first bandwidth weight is ignored and is not used in the ratio calculation. *The expedite queue is a priority queue, and it is serviced until empty* before the other queues are serviced. You enable the expedite queue by using the priority-queue out interface configuration command. So what I get is the settings are ignore completely for the calculation of shared bandwidth for the other queues, and because the queue is serviced until empty. I'm all dizzy today from studying the LAN QoS and still can't say I know it all. :-/ On Fri, Jul 23, 2010 at 5:49 PM, Daniel Berlinski dberlin...@gmail.com wrote: Hello Can someone confirm my understanding. The below question implies the use of priority-queue out inteface command. For adjusting how much bandwidth is given to the egress priority queue of a 3750/3560/2960 switch the interface command: srr-queue bandwidth shape means nothing The srr command that tunes the buffer size of memory to be given to queue 1 is the one that will adjust the priority-queue depth required. Feedback please ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com -- Randall da ill Saborio CCIE Voice Wannabe #10054675811 (Real number coming this July 2010) ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] LAN QoS Priority and buffer size
Thanks sir for your reply. This is my understanding for quite a while and i hope i am not wrong for all this time. So i'm happy that you agree. This goes inline to the document 3750 QoS configuration examples - The document does not state this objectively and I'm finding weird the fact of seeing lots of posts lately in this forum of people adjusting priority queue size by tweaking the wrong place so keen to hear any contrary intelligent opinions out there. If anyone out there disagrees please join the discussion and don't be shy. On Sat, Jul 24, 2010 at 12:49 PM, Randall Saborio ill2...@gmail.com wrote: Hi Daniel, I had to review again my notes and the documentation to tell for sure (wish I knew it out of my head as earlier I was studying a lot of the lan qos theory). You are correct, the srr-queue bandwidth shape means nothing when you configure the priority queue out. As it says on the doc: All four queues participate in the SRR unless the expedite queue is enabled, in which case the first bandwidth weight is ignored and is not used in the ratio calculation. *The expedite queue is a priority queue, and it is serviced until empty* before the other queues are serviced. You enable the expedite queue by using the priority-queue out interface configuration command. So what I get is the settings are ignore completely for the calculation of shared bandwidth for the other queues, and because the queue is serviced until empty. I'm all dizzy today from studying the LAN QoS and still can't say I know it all. :-/ On Fri, Jul 23, 2010 at 5:49 PM, Daniel Berlinski dberlin...@gmail.com wrote: Hello Can someone confirm my understanding. The below question implies the use of priority-queue out inteface command. For adjusting how much bandwidth is given to the egress priority queue of a 3750/3560/2960 switch the interface command: srr-queue bandwidth shape means nothing The srr command that tunes the buffer size of memory to be given to queue 1 is the one that will adjust the priority-queue depth required. Feedback please ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com -- Randall da ill Saborio CCIE Voice Wannabe #10054675811 (Real number coming this July 2010) ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] Lan QOS Scenario
FYI, I think this is too complex to answer simply: mls qos queue-set output 1 threshold 2 40 60 100 200 This line gives threshold 1 40% of the buffer space and threshold 2 60% of the buffer space, total buffer space reserved is 100% and max (threshold 3) is 200%. Reserved at 100% tells the queue to not share any of it's buffers with the other queues. Max at 200% says it can borrow up to 2 times it's buffer space from the shared pool (space available in queues 1, 3 and 4). Threshold 1 is set at 40% of the buffer size (that's calculated from the full buffer allocation of the queue), and threshold 2 is set for 60%. Remember though, these don't have to total 100%, in fact you can set threshold 1 to 300% or 1000% if you want. By setting threshold 1 to 40% you tell it to start dropping at that threshold, it has no affect on threshold 2's drop percentage. By setting threshold 1 to 40 and threshold 2 to 60, you are affectively limiting queue 2 to 60% of it's total buffers (unless you assign something to threshold 3). I would say that unless you were asked to mess with the other thresholds, leave threshold 1 at 100. I would also set threshold 3 (max) to 100% of buffers for this question. Because this potentially allows other COS to dou ble the effective size of queue 2, thus turning your 60% threshold into a 30%. But maybe I'm over thinking it. So my answer would look like this: mls qos queue-set output 1 threshold 2 100 60 100 100 sets threshold 1 to 100 percent of buffers sets threshold 2 to 60 percent of buffers (cos 4) sets threshold 3 to 100 percent of buffers Matt On Jun 8, 2010, at 10:37 PM, Pavan wrote: Looks good as farvas i can tell. Normally you would also enabl priority-queue on the interface Sent from my phone On Jun 8, 2010, at 8:20 PM, jammer jones jammerjone...@gmail.com wrote: Trying to understand this a little better. Cisco's documentation is not written in very clear english. Very frustrating trying to understand the threshold values as well as the shape versus share bandwidth values. QOS. Cos 5 for queue 1 queue 2 queue 3 queue 4 0 similar to lab 2 . Queue one has the 25% of the bandwidth. other bandwidth is shared as 30 40 30. If the queue 2 is saturated by 60% then the cos 4 has to be dropped. Here is what I think it is. Can someone please correct me if i am wrong and provide any positive feedback. ! mls qos srr-queue output cos-map queue 2 threshold 2 4 !maps cos 4 to queue 2 and threshold 2 mls qos srr-queue output cos-map queue 4 threshold 1 0 !maps cos 0 to queue 4 mls qos queue-set output 1 threshold 2 40 60 100 200 ! when queue 2 threshold 2 exceeds 60% cos packets with cos 4 will be dropped mls qos ! ! interface GigabitEthernet1/0/1 description Office_912_lab_a switchport access vlan 48 switchport mode access switchport voice vlan 51 srr-queue bandwidth share 1 30 40 30 ! sets queues 2 - 4 to 30 40 30 srr-queue bandwidth shape 4 0 0 0 ! sets queue 1 to 25% of the link mls qos trust cos spanning-tree portfast ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
[OSL | CCIE_Voice] LAN QOS priority-queue out
Hi Jammer, As per my understanding for this, yes Q1 will become a priority queue after we issue command priority-queue out Anyway, it is shaped to %20 so it will not starve other traffic. i.e. as long as its traffic are within the boundaries of %20, it will be served before anything else; but everything beyoned that will be dropped On the other hand, remaining queues: namely Q1, Q2, and Q3 will share the other remaining bandwidth (which is %80 here) with weights 40,30,40 .Here, I think it is 40 20 40 HTH _ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. https://signup.live.com/signup.aspx?id=60969___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
[OSL | CCIE_Voice] LAN QOS priority-queue out
OK I have read everything possible on LAN QOS and here is what i am trying to understand if i am asked following 1. to put a certain cos value say 4 in the priority queue in one question and then in another question i am asked 2. to guarantee queue 1 for for 20% of the traffic and the remaining queues share the rest of the bandwidth 40 30 40 should i enable priority-queue out under the interface or not??? From what i understand queue 1 is the default priority queue for expedite services but only if configured with priority-queue out under the interface. It is not just automatically considered the priority queue like many people think it is. also if priority-queue is configured under the interface it can actually starve all of the other traffic and overwrites in values applied to queue 1. So it would not be possible to shape traffic or guarantee it at 20% based on this if my understanding is correct, i do not believe it is possible to put cos 4 in the priority queue and at the same time guarantee 20% for queue 1. If this is case how would it be possible to come up with a correct answer to this? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
[OSL | CCIE_Voice] Lan QOS Scenario
Trying to understand this a little better. Cisco's documentation is not written in very clear english. Very frustrating trying to understand the threshold values as well as the shape versus share bandwidth values. QOS. Cos 5 for queue 1 queue 2 queue 3 queue 4 0 similar to lab 2 . Queue one has the 25% of the bandwidth. other bandwidth is shared as 30 40 30. If the queue 2 is saturated by 60% then the cos 4 has to be dropped. Here is what I think it is. Can someone please correct me if i am wrong and provide any positive feedback. ! mls qos srr-queue output cos-map queue 2 threshold 2 4 !maps cos 4 to queue 2 and threshold 2 mls qos srr-queue output cos-map queue 4 threshold 1 0 !maps cos 0 to queue 4 mls qos queue-set output 1 threshold 2 40 60 100 200 ! when queue 2 threshold 2 exceeds 60% cos packets with cos 4 will be dropped mls qos ! ! interface GigabitEthernet1/0/1 description Office_912_lab_a switchport access vlan 48 switchport mode access switchport voice vlan 51 srr-queue bandwidth share 1 30 40 30 ! sets queues 2 - 4 to 30 40 30 srr-queue bandwidth shape 4 0 0 0 ! sets queue 1 to 25% of the link mls qos trust cos spanning-tree portfast ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] Lan QOS Scenario
Looks good as farvas i can tell. Normally you would also enabl priority-queue on the interface Sent from my phone On Jun 8, 2010, at 8:20 PM, jammer jones jammerjone...@gmail.com wrote: Trying to understand this a little better. Cisco's documentation is not written in very clear english. Very frustrating trying to understand the threshold values as well as the shape versus share bandwidth values. QOS. Cos 5 for queue 1 queue 2 queue 3 queue 4 0 similar to lab 2 . Queue one has the 25% of the bandwidth. other bandwidth is shared as 30 40 30. If the queue 2 is saturated by 60% then the cos 4 has to be dropped. Here is what I think it is. Can someone please correct me if i am wrong and provide any positive feedback. ! mls qos srr-queue output cos-map queue 2 threshold 2 4 !maps cos 4 to queue 2 and threshold 2 mls qos srr-queue output cos-map queue 4 threshold 1 0 !maps cos 0 to queue 4 mls qos queue-set output 1 threshold 2 40 60 100 200 ! when queue 2 threshold 2 exceeds 60% cos packets with cos 4 will be dropped mls qos ! ! interface GigabitEthernet1/0/1 description Office_912_lab_a switchport access vlan 48 switchport mode access switchport voice vlan 51 srr-queue bandwidth share 1 30 40 30 ! sets queues 2 - 4 to 30 40 30 srr-queue bandwidth shape 4 0 0 0 ! sets queue 1 to 25% of the link mls qos trust cos spanning-tree portfast ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
[OSL | CCIE_Voice] Lan QOS Scenario
Trying to understand this a little better. Cisco's documentation is not written in very clear english. Very frustrating trying to understand the threshold values as well as the shape versus share bandwidth values. QOS. Cos 5 for queue 1 queue 2 queue 3 queue 4 0 similar to lab 2 . Queue one has the 25% of the bandwidth. other bandwidth is shared as 30 40 30. If the queue 2 is saturated by 60% then the cos 4 has to be dropped. Here is what I think it is. Can someone please correct me if i am wrong and provide any positive feedback. ! mls qos srr-queue output cos-map queue 2 threshold 2 4 !maps cos 4 to queue 2 and threshold 2 mls qos srr-queue output cos-map queue 4 threshold 1 0 !maps cos 0 to queue 4 mls qos queue-set output 1 threshold 2 40 60 100 200 ! when queue 2 threshold 2 exceeds 60% cos packets with cos 4 will be dropped mls qos ! ! interface GigabitEthernet1/0/1 description Office_912_lab_a switchport access vlan 48 switchport mode access switchport voice vlan 51 srr-queue bandwidth share 1 30 40 30 ! sets queues 2 - 4 to 30 40 30 srr-queue bandwidth shape 4 0 0 0 ! sets queue 1 to 25% of the link mls qos trust cos spanning-tree portfast ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
