I have a 4605 with SupII-Plus running 12.2(31)SGA and want to migrate it to a 4507-E so that I can have redundant Sups.
I plan on configuring the new 4507-E with the same vlans as the 4506 and connect the two chassis together with a trunk port. Then I will move host cables one-at-a-time from the 4506 to the 4507-E. Then I'll move the 4506 SupII into the 4507-E redundant slot.
Will 12.2(31)SGA work OK in the new 4507-E chassis? I know both Sups must have the same IOS level for redundancy.