11-24-2005 04:30 AM - edited 03-03-2019 12:55 AM
Hi All,
I have a pair of 3750 switches here. I tried to gigastack them.
I increased the priority on switch 1 to make it the master.
I then wrote the configs to memory and shut both switches down while i installed the cables on the back.
When the switches came up, I could get to everything connected to switch 1, but not switch 2.
I then shut both switches down and attempted to revert back. I even factory defaulted switch 2.
No matter what i do.... switch 2 still has...
switch 2 provision ws-c3750g-24ps in the configuration.
I also noticed that all my interfaces changed from G1/0/x to G2/0/x.
I changed the original config file from the original G1/0/x to G2/0/x and now I have restored connectivity to everything on switch 2.
The stackwise cables are not connected at this point.
I am thinking of trying this again, but am a little wary.
Does anyone have any links or information on using Gigastacking.
11-24-2005 04:47 AM
A few things to keep in mind when gigastacking:
- Gigastacks are not hot swapable
- Always try to upgrade to the newest IOS when using gigastack
- Connecting both stacking cables will have switches revert to half duplex.
So my advise would be : connect only 1 cable from switch to switch, upgrade both ios, reboot. Check if you see a green light on both gigastacks (if you connect both cables, you should get 3 green lights 1 red for spanning tree block)
btw. not sure what you mean with "changed to master".
11-24-2005 05:29 AM
? Connect only one Gigastack cable ? can you do that?
11-24-2005 05:46 AM
Yes, in fact it's the only way of getting full duplex. Two cables would increase your redundancy somewhat in a larger stack, but with 2 or 3 switches it's not worth it.
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