Switching interface numbers on a 3750 switch

[Patrick McHenry]

Hi,

Is there a way to change interface numbers on a 3750 stack but, still retain the config of the physical port?

For instance:

I would like to take the top switch, which has the ports numbered g2/0/1 - 52 and change them to be g1/0/1 - 52. And the bottom switch, which has ports numbered g1/0/1 - 52 and change them to be g2/0/1 - 52. Basically, just swap the interface numbers but, not effect any interface configurations.

Thanks, Pat.

[ogamanya]

No you cannot

The config is a file in NVRAM which holds port specific config.When you change the switch number, you change the physical arrangement of the switch (think of it as a module in a stack). In your case SW1 changed to 2 is making SW1 module 2 in the stack.

When you change the Switch number, you need to reboot the switch and the config file is applied after the stack is built (module number is assigned)

[Leo Laohoo]

Hi Patrick,

No you cannot.

You can easily re-load the config with the new stacking numbers.

1.  Download the config to a TXT file.

2.  Use Notpad and perform a find-and-replace (Ctrl+H) to replace the port interfaces into the one you want.

3.  Renumber the stack

4.  Upload the config.