Friday, August 9, 2019

Cisco 2960X ARP table issue - bad entry from remote network

I have (2) 2960X switches out of 47, all identical configs (version/model/subnet,etc).

Switches are on VLAN1, Cisco Prime server on VLAN2.

The switches are recording an ARP entry for the server, which is preventing the two from communicating properly.

Has anyone else experience this before? I can't find any solid info on a bug report, but clearing the ARP cache fixed the problem for awhile until the arp table repopulates.

I don't even know why the switch is recording an ARP entry for a remote network....?

Sincererly,

Baffled in the Midwest

Switch Ports Model SW Version SW Image

------ ----- ----- ---------- ----------

* 1 52 WS-C2960X-48FPD-L 15.2(2)E3 C2960X-UNIVERSALK9-M



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