MAC addresses of redundant interfaces on failover pair of CSS.

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Dec 7th, 2008
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Helo all, I wanted to know what happens to the MAC addresses of the failover interfaces on the two CSS devices configured as a failover pair when a failover occurs?

Also what happens in a failover event in general? Can anyone point me to some documents describing the failover process.

Thank you,


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Gilles Dufour Mon, 12/08/2008 - 01:43
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Usually a G-ARP is sent after a failover to update arp/cam tables.


dtochilovsky Tue, 12/09/2008 - 09:00
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Does anyone have any docs on the failover process of the CSS, what exaclty happens during failover in regards to the IP addresses of the circuits and the MAC addresses of the interfaces?

Thank you.


sachinga.hcl Fri, 05/29/2009 - 10:13
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Hi Dimitry,

Here is the URL for the configuration for the Configuring VIP and Virtual IP Interface Redundancy follow the configuration guide which may help you

Configuring Box to box redundancy:

CSS 11500 Active-Active Stateful Failover ASR in One-Armed Mode Configuration Example

Box-to-Box Redundancy on the CSS 11xxx Configuration Example - Ciscowiki

Kindly find full range of configuration examples on CSS here :

Cisco CSS 11500 Series Content Services Switches

Configuration Examples and TechNotes

Cisco CSS 11500 Series Content Services Switches

Kindly see URL given below for my other articles

If possible plz rate sothat I can be helpful to other people also as it will enhance my credibility.



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