I'm a ding-bat. Thx Bryan.
________________________________ From: Bryan Bartik <[email protected]> To: "Sealander, David" <[email protected]> Cc: Rob Routt <[email protected]>; Kim Pedersen <[email protected]>; prakash patel <[email protected]>; [email protected] Sent: Wednesday, June 3, 2009 8:55:28 AM Subject: Re: [OSL | CCIE_RS] IPE vol2 lab 3 Rob, If you have 3 switches all connected to each other with etherchannels, STP will still block. You will not see the physical port, but you will see the whole port-channel blocked. Etherchannel allows you to utilize multiple links between 2 devices, it doesn't de-necessitate the use of STP in your entire topology. Bryan Bartik CCIE #23707 (R&S), CCNP Sr. Support Engineer - IPexpert, Inc. URL: http://www.IPexpert.com On Wed, Jun 3, 2009 at 9:28 AM, Sealander, David <[email protected]> wrote: If this is on proctor labs, make sure on r2 that port f1/1 is shut down, or that port f1/0 has no switchport command. David Sealander, CCNP Network Systems Engineer Frederick Memorial Healthcare System 400 West 7th Street Frederick, MD 21701 (240) 566-3768 From:[email protected] [mailto:[email protected]] On Behalf Of Rob Routt Sent: Wednesday, June 03, 2009 11:21 AM To: Kim Pedersen; prakash patel Cc: [email protected] Subject: Re: [OSL | CCIE_RS] IPE vol2 lab 3 Cat1#sh etherchannel summ Flags: D - down P - bundled in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2 U - in use f - failed to allocate aggregator M - not in use, minimum links not met u - unsuitable for bundling w - waiting to be aggregated d - default port Number of channel-groups in use: 3 Number of aggregators: 3 Group Port-channel Protocol Ports ------+-------------+-----------+----------------------------------------------- 1 Po1(SU) - Fa0/19(P) Fa0/20(P) 2 Po2(SU) - Fa0/21(P) Fa0/22(P) 3 Po3(SU) - Fa0/23(P) Fa0/24(P) Cat2(config-if-range)#do sh etherchannel summ ! Number of channel-groups in use: 3 Number of aggregators: 3 Group Port-channel Protocol Ports ------+-------------+-----------+----------------------------------------------- 1 Po1(SU) - Fa0/19(P) Fa0/20(P) 2 Po2(SU) - Fa0/21(P) Fa0/22(P) 3 Po3(SU) - Fa0/23(P) Fa0/24(P) Cat3(config-if-range)#do sh ether summ ! Number of channel-groups in use: 3 Number of aggregators: 3 Group Port-channel Protocol Ports ------+-------------+-----------+----------------------------------------------- 1 Po1(SU) - Fa0/19(P) Fa0/20(P) 2 Po2(SU) - Fa0/21(P) Fa0/22(P) 3 Po3(SU) - Fa0/23(P) Fa0/24(P) Cat4(config-if-range)#do sh ether summ ! Number of channel-groups in use: 3 Number of aggregators: 3 Group Port-channel Protocol Ports ------+-------------+-----------+----------------------------------------------- 1 Po1(SU) - Fa0/19(P) Fa0/20(P) 2 Po2(SU) - Fa0/21(P) Fa0/22(P) 3 Po3(SU) - Fa0/23(P) Fa0/24(P) ________________________________ From:Kim Pedersen <[email protected]> To: prakash patel <[email protected]> Cc: [email protected]; [email protected] Sent: Wednesday, June 3, 2009 8:06:14 AM Subject: Re: [OSL | CCIE_RS] IPE vol2 lab 3 Hi, And check out: sh etherchannel summary prakash patel wrote: > check out if gig link is active to STP!!!! > > ------------------------------------------------------------------------ > Date: Wed, 3 Jun 2009 07:50:38 -0700 > From: [email protected] > To: [email protected] > Subject: [OSL | CCIE_RS] IPE vol2 lab 3 > > Guys, I am having some etherchannel woes. I have the following configuration > and have just rebooted the switches to see if that would help. The task is > configure L2 etherchannel group on all switches for ports 19-24. So 19-20, > 21-22, 23-24 channel-groups 1-3 respectively. I keep seeing spanning tree > block when I had thought I would not see this if etherchannel is working > correctly. I have configured and re-configured. I verified my configuration > and re-booted out of frustration. Can you take a look and see if anything is > obvious to you? > port configs on all switches: > interface FastEthernet0/19 > switchport trunk encapsulation isl > switchport mode trunk > channel-group 1 mode on > ! > interface FastEthernet0/20 > switchport trunk encapsulation isl > switchport mode trunk > channel-group 1 mode on > ! > interface FastEthernet0/21 > switchport trunk encapsulation isl > switchport mode trunk > channel-group 2 mode on > ! > interface FastEthernet0/22 > switchport trunk encapsulation isl > switchport mode trunk > channel-group 2 mode on > ! interface FastEthernet0/23 > switchport trunk encapsulation isl > switchport mode trunk > channel-group 3 mode on > ! > interface FastEthernet0/24 > switchport trunk encapsulation isl > switchport mode trunk > channel-group 3 mode on > for example on cat 1 > Fa0/19 connected trunk a-full a-100 10/100BaseTX > Fa0/20 connected trunk a-full a-100 10/100BaseTX > Fa0/21 connected trunk a-full a-100 10/100BaseTX > Port Name Status Vlan Duplex Speed Type > Fa0/22 connected trunk a-full a-100 10/100BaseTX > Fa0/23 connected trunk a-full a-100 10/100BaseTX > Fa0/24 connected trunk a-full a-100 10/100BaseTX > Gi0/1 disabled 1 auto auto 1000BaseSX > SFP > Gi0/2 disabled 1 auto auto 1000BaseSX > SFP > Po1 connected trunk a-full a-100 > Po2 connected trunk a-full a-100 > Po3 connected trunk a-full a-100 > Cat1#sh spann block > Name Blocked Interfaces List > -------------------- ------------------------------------ > VLAN0010 Po2 > VLAN0020 Po2 > VLAN0030 Po2 > VLAN0040 Po2 > VLAN0050 Po2 > VLAN0060 Po2 > Number of blocked ports (segments) in the system : 6 > cat 2 > Fa0/19 connected trunk a-full a-100 10/100BaseTX > Fa0/20 connected trunk a-full a-100 10/100BaseTX > Fa0/21 connected trunk a-full a-100 10/100BaseTX > Port Name Status Vlan Duplex Speed Type > Fa0/22 connected trunk a-full a-100 10/100BaseTX > Fa0/23 connected trunk a-full a-100 10/100BaseTX > Fa0/24 connected trunk a-full a-100 10/100BaseTX > Gi0/1 disabled 1 auto auto 1000BaseSX > SFP > Gi0/2 disabled 1 auto auto Not Present > Po1 connected trunk a-full a-100 > Po2 connected trunk a-full a-100 > Po3 connected trunk a-full a-100 > Cat2#sh spann bloc Name Blocked Interfaces List > -------------------- ------------------------------------ > VLAN0001 Po2, Po3 > Number of blocked ports (segments) in the system : 2 > cat 3 > Fa0/19 connected trunk a-full a-100 10/100BaseTX > Fa0/20 connected trunk a-full a-100 10/100BaseTX > Fa0/21 connected trunk a-full a-100 10/100BaseTX > Port Name Status Vlan Duplex Speed Type > Fa0/22 connected trunk a-full a-100 10/100BaseTX > Fa0/23 connected trunk a-full a-100 10/100BaseTX > Fa0/24 connected trunk a-full a-100 10/100BaseTX > Gi0/1 disabled 1 auto auto Not Present > Gi0/2 disabled 1 auto auto Not Present > Po1 connected trunk a-full a-100 > Po2 connected trunk a-full a-100 > Po3 connected trunk a-full a-100 > Cat3#sh spann blo > Name Blocked Interfaces List > -------------------- ------------------------------------ > Number of blocked ports (segments) in the system : 0 > cat 4 > Fa0/19 connected trunk a-full a-100 10/100BaseTX > Fa0/20 connected trunk a-full a-100 10/100BaseTX > Fa0/21 connected trunk a-full a-100 10/100BaseTX > Port Name Status Vlan Duplex Speed Type > Fa0/22 connected trunk a-full a-100 10/100BaseTX > Fa0/23 connected trunk a-full a-100 10/100BaseTX > Fa0/24 connected trunk a-full a-100 10/100BaseTX > Gi0/1 disabled 1 auto auto Not Present > Gi0/2 disabled 1 auto auto Not Present > Po1 connected trunk a-full a-100 > Po2 connected trunk a-full a-100 > Po3 connected trunk a-full a-100 > Cat4#sh spann block > Name Blocked Interfaces List > -------------------- ------------------------------------ > VLAN0001 Po1 > VLAN0010 Po1, Po3 > VLAN0020 Po1, Po3 > VLAN0030 Po1, Po3 > VLAN0040 Po1, Po3 > VLAN0050 Po1, Po3 > VLAN0060 Po1, Po3 > Number of blocked ports (segments) in the system : 13 > Didn't think spanning-tree would ever affect etherchannel like this, at >least from a blocking sense. I have done other configs where stp put the port >in err-disabled, but none of my ports are errored out as you can see.. > thx guys. > Rob Routt > > > ------------------------------------------------------------------------ > Insert movie times and more without leaving Hotmail®. See how. > <http://windowslive.com/Tutorial/Hotmail/QuickAdd?ocid=TXT_TAGLM_WL_HM_Tutorial_QuickAdd_062009> -- // Freedom Matters // Follow my progress on: http://kpjungle.wordpress.com --
