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Nexus 5010 - 6500VSS multihome servers problems (ARP/MAC aging)

Hi ...   Please your suggestions or help in this case.

We have an infrastructure base on two 6509 with VSS with some Nexux 50150 and 2248 switches connected.

We have two 5010 with 2 2248 each.  Every 5010 is conected with port-channels to every 6500.

We are planning to connect some servers and appliances to Nexus 2248 multihomed way.

Our first device is an Symmetricom (NTP Server Appliance).  This device has two NICs, we connected the NICs to Nexus 5010 (one NIC per 5010).

The NICs in this devices were configured as BOND (redundant), in this case every NIC is active but just one of them is working, in case of failure of the active link the other will take the address.

Now the device is connected, but is not working the fault tolerant.

We have both NICs connected but the IP address and MAC is on the Nexus A, if we disconnect this port, the other NIC takes de address and MAC but the 6500VSS has the mac address in the first Nexus.   If we make "clear ip arp A.B.C.D" on 6500VSS the device begins to work.

We tried with both interfaces and we was suspecting about "ip arp timeout" and "mac aging" but we don't know what is the real problem.

Does anyone know or has a similar situation ?

Thanks in advanced ...

  • LAN Switching and Routing