Hi!
We have deployed a stacked 9500 as our layer 2 border node, configured with lan-automation and have an issue with migrating wired clients.
We have a solution where clients authenticate with MAB over ISE and can migrate their wired connection to other buildings or offices.
When a client that uses a layer 2 vlan, not an anycast gateway network it works if the client have not been connected before.
But migrating a wired connection from one switch to another switch DHCP packets are being lost on the way back.
Looking on the layer 2 border node the ethernet map-cache locator for that mac-address points to the previous switch it was connected to, when manually clearing that cache-entry the layer 2 border node recreates the map-cache and gets the correct locator and sends the return data to the correct switch.
I have verified that the edge-nodes are sending deregister events to the control plane nodes for the mac-address. But the layer 2 border nodes seems to not be aware of this and keeps the ethernet map-cache towards the previous switch. The expire-time is very long on the layer 2 border node for ethernet map-caches, 24H.
Is there something I have missed when deploying the border node?
Are anyone of you aware of some good workaround?
