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New Member

HSRP adjaceny issue

Hi,

I have one issue with HSRP adjacency. We have two routers HSRP enabled for a group of  VLANs.

We are facing adjacency issue with three vlans frequently.

HSRP state is being changed from Active to Speak , and later Speak to Actvie. .......frequently on both routers.

What is the reason , how can we fix that. ?

Thanks,

Ajay.

4 REPLIES
Hall of Fame Super Silver

HSRP adjaceny issue

Hello Ajay,

HSRP states rapidly changing is a symptom of problems at layer 2 like bridging loops

you need to look for changes of STP state on the switches that implement the group of Vlans associated to those HSRP groups.

show spanning-tree

look for changes of STP root bridge Bridge ID and so on

Hope to help

Giuseppe

Bronze

HSRP adjaceny issue

Hi Ajay,

are you facing same issue with all vlans or just 3 vlans?

New Member

HSRP adjaceny issue

We are facing the issue with only 3 vlans.

New Member

Re: HSRP adjaceny issue

As others have said. Chances are the hellos are getting delayed/lost. Do you have preempt configured?

How big is your l2 network? I've seen problems with root bridges not on the core switches and thus the inter-switch head end was blocked causing the hello updates to traverse 6 switches!

Sent from Cisco Technical Support iPad App

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