ARP pollution

[Kt09]

Getting ARP pollution issue in lab machines.

Most of these lab machines are Virtual Machines created on Cisco hardware and belong to the same domain.

Multiple machines are assigned same MAC address and these machines become unreachable even when they are up and running on ESXI.

These machines are not fixed which have duplicate MAC address and after 10-15 mins they automatically become reachable(this time it gets correct MAC address).

Any lead on this would be appreciable.

[daphnissov]

Not entirely following you when you say

These machines are not fixed which have duplicate MAC address and after 10-15 mins they automatically become reachable(this time it gets correct MAC address).

So these all are supposed to have duplicate MACs? Can you say more about the setup of this environment.

You might need to check out the ARP table entries after clearing it to see how this is getting populated. You can clear it with esxcli network ip neighbor remove.