HSRP Vlan Failover

[Mokhalil82]

Hi 

I have a question that i would like help with please

Core1------------------Link1----------------------Core2

     |                                                                |

     |                                                                |

Access Sw---------------Link2---------------Access Sw

If we look at the above setup, Say we have many vlans running on the access switches

The question is if HSRP is running per vlan, if say for vlan 100 is not allowed on link 1 but is allowed on link 2 and that link 2 drops, does HSRP lose visibility of its neighbor on vlan 100 as link2 is the only link allowing vlan100.  

The reason im trying to ask this is I have a client who is having issues with hsrp flapping on certain vlans and they have this setup. I was thinking of allowing the vlans on link 1 as its directly cconnected between the 2 cores and is a 10gig link. Currently Link 1 is not allowing all vlans.

Hope this is clear, Thanks

[Richard Burts · Accepted solution]

Yes if vlan 100 is allowed on link 2 and not on link 1 and if link 2 goes down then the core switches will lose visibility to each other for vlan 100 and HSRP would be impacted.

HTH

Rick

[Mokhalil82]

I was just checking to make sure, appreciate your response Richard, Thankyou