mpls packet format !!! [7:10147]
hi all, I know that the mpls label is in between the layer 2 and layer 3 header. Does anybody know where I can get the exact packet format like that for IP packets (version bits and stuff like that) ?. e.g. : - node1 --- node2 (1.1.15.1) (1.1.15.2) 0c4b2c59 0c4b2c60 label 5 This is the format for an IPv4 packet from node1 to node2 00 00 0C 4B 2C 60 00 00 0C 4B 2C 59 08 00 40 00 00 32 00 00 00 00 40 00 A1 C8 01 01 0F 02 01 01 0D 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Looking for something similar for a packet format with label 5. Thanks, Krishnan. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=10147t=10147 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
configuring ATM's for CISCO 7505 !!! [7:10151]
Hi, Does anybody have a working configuration for connecting two ATM on CISCO 7505 connected to each other by point -to-point OC3 cable .. topology :- R1 (atm) - (atm) R2 thanks, krishnan. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=10151t=10151 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
ATM configuration !!! [7:9962]
Hi Robert, I thought I configured my ATM correctly but apparently I am having some problems. I am not sure what it might be R1 (atm) (atm) R2. conf of R1 (only relevant stuff) interface ATM1/0/0 ip address 1.1.10.1 255.255.255.0 no ip directed-broadcast ip route-cache distributed ip ospf network point-to-point ip ospf cost 1 no ip mroute-cache atm clock INTERNAL atm sonet stm-1 atm pvc 64 64 64 aal5snap oam 10 no atm enable-ilmi-trap no atm auto-configuration no atm ilmi-keepalive no atm address-registration no atm ilmi-enable map-group atm mpls traffic-eng tunnels tag-switching ip ip rsvp bandwidth 8 8 ! map-list atm ip 1.1.10.1 atm-vc 64 broadcast ip 1.1.10.2 atm-vc 64 broadcast ATM1/0/0 is up, line protocol is up Hardware is cyBus ATM, address is .0c4b.2c20 (bia .0c4b.2c20) Internet address is 1.1.10.1/24 MTU 4470 bytes, sub MTU 4470, BW 155520 Kbit, DLY 80 usec, rely 255/255, load 1/255 Encapsulation ATM, loopback not set Encapsulation(s): AAL5, PVC mode 2048 maximum active VCs, 1024 VCs per VP, 1 current VCCs VC idle disconnect time: 300 seconds Last input 00:00:00, output 00:00:00, output hang never Last clearing of show interface counters 00:09:18 Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops, 0 flushes 5 minute input rate 1000 bits/sec, 2 packets/sec 5 minute output rate 1000 bits/sec, 2 packets/sec 750 packets input, 55444 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 585 packets output, 44981 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out traceroute 1.1.10.1 Type escape sequence to abort. Tracing the route to 1.1.10.1 1 1.1.10.2 0 msec 0 msec 0 msec 2 * * * 3 * * * traceroute 1.1.10.2 Type escape sequence to abort. Tracing the route to 1.1.10.2 1 1.1.10.2 0 msec 0 msec * ping 1.1.10.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 1.1.10.2, timeout is 2 seconds: ! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms escher4#ping 1.1.10.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 1.1.10.1, timeout is 2 seconds: . Success rate is 0 percent (0/5) Why am I not able to ping itself and why is traceroute to itself getting lost ... What am I missing ?. conf of R2 --- interface ATM2/0/0 ip address 1.1.10.2 255.255.255.0 no ip directed-broadcast ip route-cache distributed ip ospf network point-to-point ip ospf cost 1 no ip mroute-cache atm clock INTERNAL atm sonet stm-1 atm pvc 64 64 64 aal5snap oam 10 no atm enable-ilmi-trap no atm auto-configuration no atm ilmi-keepalive no atm address-registration no atm ilmi-enable map-group atm mpls traffic-eng tunnels tag-switching ip ip rsvp bandwidth 8 8 ! map-list atm ip 1.1.10.1 atm-vc 64 broadcast ip 1.1.10.2 atm-vc 64 broadcast ATM2/0/0 is up, line protocol is up Hardware is cyBus ATM, address is .0c5f.df40 (bia .0c5f.df40) Internet address is 1.1.10.2/24 MTU 4470 bytes, sub MTU 4470, BW 155520 Kbit, DLY 80 usec, rely 255/255, load 1/255 Encapsulation ATM, loopback not set Encapsulation(s): AAL5, PVC mode 2048 maximum active VCs, 1024 VCs per VP, 1 current VCCs VC idle disconnect time: 300 seconds Last input 00:00:02, output 00:00:00, output hang 3w0d Last clearing of show interface counters 00:09:41 Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops, 0 flushes 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 621 packets input, 48105 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 805 packets output, 59029 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out The line protocols are up. traceroute 1.1.10.2 Type escape sequence to abort. Tracing the route to 1.1.10.2 1 1.1.10.1 0 msec 0 msec 0 msec 2 1.1.10.2 0 msec 0 msec * escher5#traceroute 1.1.10.1 Type escape sequence to abort. Tracing the route to 1.1.10.1 1 1.1.10.1 0 msec 0 msec * escher5#ping 1.1.10.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 1.1.10.1, timeout is 2 seconds: ! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms escher5#ping 1.1.10.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 1.1.10.2, timeout is 2 seconds: ! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms What does Incomplete mean in arp table ?. At R1 : show arp Protocol Address Age (min) Hardware Addr Type Interface Internet 1.1.10.20 Incomplete ATM Thanks, Krishnan. Message
Re: ATM configuration !!! [7:9962]
Hi, Can you be more specific and also explain how to define sub interfaces for ATM ?. are there any pointers I can look at for the CLIs ?. thanks, krishnan. NECATI ERTUGRUL wrote: You should use subinterfaces in your ATM configuration to piny itself. Due to an unknown reason if you don't use subinterfaces the router just can't ping itself. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=9965t=9962 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ATM configuration !!! [7:9962]
Hi , It says can't group on point-to-point interface . How do I solve that ... thanks, krishnan. NECATI ERTUGRUL wrote: I am sending you a configuration example below : interface ATM1/0 bandwidth no ip address atm clock INTERNAL no atm ilmi-keepalive ! interface ATM1/0.1 point-to-point bandwidth XXX ip address A.B.C.D 255.255.255.252 atm pvc 1 1 5 aal5snap Just carry your configurations to a subinterface!! Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=9974t=9962 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
New to CCNA !!! [7:9184]
Hi All, I am new to Cisco's certification and want to start with CCNA. Can you suggest the following :- 1. What are the books I need to buy ?. 2. How much time does it take to cover all this material ? 3. Any tips / comments / suggestions for preparing and taking the test. Thanks, Krishnan. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=9184t=9184 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Policy Based Routing with MPLS (HELP) !!! [7:8185]
Hi All, Topology of my network. |--(fe)SB3(1.1.15.2) 1.1.13.1 |(fe) SB1 (fe) (fe)R3 (fddi)--(fddi)R5 (pos)--- (pos)R1 (pos)- (pos)R4(fe) -(fe)SB2(1.1.16.2) |(atm) |(atm) -- legend : R : CISCO 7505 routers running IOS 12.0(16)ST fe : fast ethernet atm : ATM POS : Packet over sonet FDDI : FDDI SB : smart bits SB1 has 2 streams of traffic. One destined to SB3 and another to SB2. I have two MPLS tunnels set up(tunnel 3 and tunnel 4). I am running OSPF as my intra domain routing protocol. Path for tunnel3 : R3 R5 R1 R4 Path for tunnel4 : R3 R5 R4 Pbm. : If I want the traffic reaching SB3 to go through tunnel 3 and the traffic reaching SB2 to go through tunnel 4, what am I supposed to do at router R3 I tried using policy based routing but I am not sure if I configured it the right way. The config I did for policy based routing is given below. Also, I understand that when I create a MPLS tunnel and reserve bandwith for QoS it is done from R3 to R4 and is not end to end. In order for me to do it end to end, how do I do it. (e.g.) the QoS is guaranteed only until the POS of R4 and not until the fe interface that connects R4 to SB3. access-list 2 permit 1.1.15.2 access-list 3 permit 1.1.16.2 route-map escher permit 10 match ip address 2 set interface Tunnel3 ! route-map escher1 permit 10 match ip address 3 set interface Tunnel4 ! interface tunnel 3 ip policy route-map escher ! interface tunnel 4 ip policy route-map escher1 When I start sending data from SB1 I see the traffic reaching SB2 and SB3 but the traffic flowing through tunnel4 is 0 and I presume traffic is flowing through the other tunnel. Another question I have is if I am sending about 100 Mbps of traffic thorugh SB1 towards SB2(50Mbps) and SB3(50 Mbps) then if the tunnel is configured only to carry 3 kbps of traffic, will any traffic go through the tunnel or would it just follow the shortest path provided by OSPF. I guess I want to know how to find out whether traffic is going through tunnel or through OSPF routing. Any pointers or reading material suggestions would be highly appreciated. Please help, thanks in advance and for your patience to read through my mail. Thanks, Krishnan. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=8185t=8185 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Policy Based Routing with MPLS (topology attached) [7:8189]
Hi All, I guess the topology I had drawn got truncated. You can have a look at the topology at http://www.cs.uoregon.edu/~krishnan/mpls/ Thanks and sorry for the trouble. Krishnan. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=8189t=8189 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Tag-switching -vs- MPLS !!! [7:8027]
Hi All, I am not sure what is the difference between tag-switching and MPLS Also, are all mpls commands backward compatible to tag-switching ???... Thanks, Krishnan. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=8027t=8027 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Tag-switching -vs- MPLS !!! [7:8059]
Hi All, I have been receiving enumerous replies from people stating that tag-switching was pre-developed MPLS by CISCO. I am looking for more information as in what are its differences ???. If I am configuring something on a CISCO router to perform MPLS TE then some configuration commands are tag-switching based, will they work if I am doing mpls ??? Thanks, Krishnan. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=8059t=8059 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
State of the Art on MPLS !!! [7:7597]
Hi All, I am trying to understand the state of the art on MPLS technology. Does anybody know if either CISCO or Juniper supports MPLS label stacking, label merging, explicit label assignment on explicit routes. Also, what are the necessary hardware and software requirements for them. Thanks in advance. Krishnan. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=7597t=7597 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
