Two 7206vxr's configured with Layer 3 port-channel connected to a 3750 sw

[reynaldob]

Using conventional HSRP configuration, everything works fine (1 gig0/2.10 with the ip and standby ip and encapsulation)---- 3750 g1/0/23 trunk dot1q encap (vlan10 with ip)same with 7206vxr router 2.

When I use the port-channel 10 configuration (with the ip, standby ip, and encapsulation), int g0/2.10 channel group 10---- 3750channel-group 10 mode on, encap dot1q.

on the show standby of both routers, they are both active

I tried configuring a int port-channel 10.10 (encapsulation dot1q) on the two 7206vxr still the sh standby shows both are active.

version of the 7206vxr's

disk2:c7200-jk9s-mz.123-8.T11.bin

version of the Catalyst 3750

c3750-ipbase-mz.122-25.SEB4/c3750-ipbase-mz.122-25.SEB4.bin

Hope you guys can shed light on this and btw, can someone send me a link on port-channel configuration specifically on a 7206vxr router? Can't seem to find it in CCO.

Thanks!

Reynaldo

[spremkumar]

hi

hope this helps..

http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_configuration_guide_chapter09186a008008707b.html#1056303

regds

[gpulos]

you could have hsrp instability.

for the hsrp issue, see the following link:

http://www.cisco.com/en/US/tech/tk648/tk362/technologies_configuration_example09186a0080093f93.shtml

see this bug: CSCdr02376 (linked from above document)

see the following link for 7200 etherchannel configuration:

http://www.cisco.com/en/US/products/hw/switches/ps628/products_configuration_example09186a00800ef797.shtml

[globalnettech]

Hello,

in addition to the other posts, make sure your port-channels are configured as layer 2 interfaces:

interface port-channel 10

no switchport

ip address x.x.x.x

I think you indicated that you are using ISL encapsulation, which means it is a layer 2 interface. HSRP won't work with layer 2 interfaces...

Regards,

GNT