Replacing 2 3750 Core switches

[dvanzee]

We have 2 3750 switches in a stack and need to replace both of them. Has anyone done this before? What would be the best way to get the config so that it matches both switches? Should I replace one at a time? I know one will be designated a master, anything to consider on that? Any help would be great.

[lgijssel]

Probably the best way is to pre-configure the new switches and then link them to the existing network. This can be done via 100Mb crossover if needed as it will be a temporary situation.

After this link is established you may start plugging the PC's and server over to the new switches. As a last step you can then remove the old switches. The operation might be a bit more difficult if there is insufficient rack space but that is always a matter of improvisation. Good luck!

Regards,

Leo

[javentre]

It's even easier. No crossover cable needed. The 3750 can figure it out for itself (as long as you're set to auto/auto):

3750(config-if)#mdix ?

auto Enable automatic MDI crossover detection on this interface