Hello all. The scenario is this: I have an old Nortel network with a bunch of servers attached. Connected to it is the new Cisco core, by way of a routed port. My task is to migrate servers over to the Cisco side of the network, with minimal downtime, and have full network connectivity, retain IP addresses/remain on the same subnet, and retire the Nortels. The Nortels are running VRRP, so I can fail the gateway over by becoming part of that group and later dropping the Nortels, but I can't seem to get a host on the Cisco side to participate in the original subnet. The routed port kills VLAN traffic, so I tried bridging the VLAN with the routed port, to no avail.
Any help would be appreciated!
Use another port from your Cisco core as trunk for the vlans configured on Nortel.
Connect the port between Cisco and Nortel.
Configure SVIs on the Cisco core for the vlans that should be moved from Nortel -> Cisco ( but the one that is used as routed port , if this has also servers, could be used like this ) , but in shutdown, with VRRP.
Activate each SVI at a time , and check the server behaviour.
I expect :
In both directions the traffic will go to the Cisco Core :
- To the servers : CIsco will have the SVI configured and UP => directly connected
- From the servers : Cisco will be the VRRP active.