General: What will happen when a active interface is shut in HA Router

Unanswered Question
Mar 29th, 2008
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My Question is:

What will happen a active interface is 'shut' adminitratively in the active HA Router - my set up is using HSRP for redundancy.

To my knowledge the expected behavior is when the interface is shut the standby router need to take the action of the active router.

But in my case, when the active interface is shut administratively in active router , the router is reloaded- is this is expected behavior?

But the switch over happens without any problem and even the IPsec tunnel are active in the standby when it comes up.

Please add your comments whether the reloading of the active is right?


Kesavamurthy Palani

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Danilo Dy Sat, 03/29/2008 - 03:19
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Can you post your router ISO versions? It might be affected by a bug.

Also post the log of the router that rebooted.



keshavnow Thu, 04/10/2008 - 08:16
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Hi Dandy,

Thanks for your reply,

The reboot is expected, because both the router is configured for SSO(Stateful Switch Over)

So when the active interface in active router is shut - the router will undergo reload

and the standby will take the action

Got this from one of Cisco Doc




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