×

Warning message

  • Cisco Support Forums is in Read Only mode while the site is being migrated.
  • Cisco Support Forums is in Read Only mode while the site is being migrated.

HSRP and L3 Switches

Unanswered Question
Jan 13th, 2012
User Badges:

Have 4 switches a mix of 3560 and 3550's in a test lab.


test-sv1 and test-sv2 connected via dot1q. Vlan 2 is setup on each switch with

test-sv1 as 192.168.31.2 and test-sv2 as 192.168.31.3 and a standby 1 ip 192.168.31.1.


test-sv3 and test-sv4 connected via dot1q. Vlan 10 is setup on each switch with

test-sv3 as 192.168.38.2 and test-sv4 as 192.168.38.3 and standby 1 ip 192.168.38.1


I connected test-sv1 and test-sv3 together with routed ports and test-sv2 and test-sv4 with

routed ports.


I have hosts on vlan 2 and hosts on vlan 10 on all 4 switches.. all hosts are reachable when things are fully

connected.


Problem comes up when testing things out.


When the active HSRP switch in a set is unplugged, the standby switch takes over. But the new active switch is

connected to the standby switch in the other set of 2 and all the hosts go unreachable because the standby switch

is in standby and won't pass any traffic.


Is there a way around this? Is this even a valid type of configuration? Would a routing protocol such as OSPF overcome

this? Should I change the routed ports to something else?


Thanks for any info.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
glen.grant Fri, 01/13/2012 - 16:43
User Badges:
  • Purple, 4500 points or more

  You would need a L2 connection between your routing  boxes carrying all active vlans.   It would then go across that l2 crosslink to the active side router where it would get routed to the destination.

Actions

This Discussion