Cisco 3945 Active/Standby with Nexus 2k

[Hermanus Janse van Vuuren]

Hi,

I wonder if someone has done this before and can help me with this solution.

I am deploying a 3945 connecting via gigabit to a Nexus 2k and want to connect both Gi0/0 and Gi0/1 to the Nexus 2k for active/standby.

Is this possible? Will I be able to assign the same IP to both interfaces or do I go IP Unumbered witj a loopback interface for interfacing with the CUCM 9?

See atached JPG please

[Richard Burts]

If you really want to connect both Gig interfaces to the Nexus 2K (assuming that both N2K interfaces are in the same vlan) then I do not believe that IP unnumbered will work. I would suggest that you look into using Integrated Routing and Bridging. You would configure bridging on the 3945, put both Gig interfaces into the same bridge group, and configure a BVI for the bridge group and the IP address goes on the BVI.

HTH

Rick

[Gregory Snipes]

Is there more to your setup then is indicated in your diagram? You cannot just connect a FEX to a router you need the FEX to be connected back to a nexus mother switch.