We are planning the upgrade of 2 catalyst 6000 to 2 newer catalyst 6506.
when this move is completed, i want them to work in vss mode (as a single switch).
those to old 6000 are on my production network working together with hsrp (int vlans).
One 6506 is currently on the network in non vss mode and i must replace one 6000
before adding the second 6506 on my network. (i can't do both at the same time).
What is the best way to to do this keeping in mind that i want them working in vss mode ?
Is it better to convert them to vss first before doing the move ?
Will i loose all my running config when converting to vss mode ?
what is the best migration steps