Looking for best practices in migrating from 2 Core 4006 switches running HSRP to 2 new Core 6509's running VSS w/Sup720. The VSS has already been setup before I came on board, but nothing has been migrated over just yet.
I'm planning out where server's & Inf devices will go in pre-configuring/labeling the ports on the 6509's. The concern is everything in he Core is pointing to the VIP on the 4006's running HSRP and we don't want to touch everything to change to a new default gateway. With the current setup, the Inf devices point to VIP x.x.x.3/24 with x.x.x.2/24 being the secondary 4006 and x.x.x.1/24 being the primary 4006.
There are 2 trunked links from the 4006's to the VSS and going to test setting up MEC and remove the trunk links. What would be gained if anything by removing the trunks and going with MEC between the old and new Core? Eventually the 4006's will go away which is the plan once everything is migrated over, but I'm concerned with production being affected and how to mimic the x.x.x.3/24 VIP config in the VSS environment.
Any help, suggestions, best practices is greatly appreciated!