I am setting up multiple vlan interfaces on a pair of HSRP Routers that will provide layer 3 routing for a network. I am seeing this command sporadically show up in the router config -
mac-address-table static 0000.0c07.acd2 vlan 210
I am not entering this command. So far, it has not shown up on the companion 3725 router. I have a 2nd vlan I have just created and the problem hasnt shown up for that vlan as yet.
Using C3725-ADVSECURITYK9-M), Version 12.4(15)T7, RELEASE SOFTWARE (fc3) on the routers.
Any suggestions ?
It is Virtual MAC created for the Group 210 and looks like the switch is making a static entry of this VMAC in its MAC address table.
But I'm not sure if it is supposed to. May be experts can comment
I figured that it was the switch creating the address but I am trying to figure out why the switch is creating the config entry. I have switched over to using vrrp as a test and noticed the same issue there as well. I went to CCNP Bootcamp a couple of months ago and didnt see this happen on the switch stack there. When the static mac entry line is present for a particular vlan, I am not able to ping the virtual ip address. Would really like to find out what is going on.