12-08-2015 02:40 PM - edited 03-08-2019 03:01 AM
Setting up a new Catalyst 3750. It is hooked up to a switch stack (two 3750s). On the stack the master has both fiber ports filled, so I am using GigabitEthernet 2/0/1 on the other switch.
On the new switch I have a Ubiquity AP connected to 1/0/15 and the port is up.
CDP neighbor shows the connection, however the managment vlan is down/down. A partial config is attached. Any suggestions are appreciated.
12-08-2015 03:47 PM
Don't do it that way if they are the same family of 3750's. Just get extra stacking cables. This document shows how to connect them up.
12-09-2015 05:06 AM
Sorry, I must not be clear. The new switch is at a new location so I can't stack the new switch. It has a few block fiber run to the stack.
12-09-2015 09:52 AM
Make sure vlan 254 is created on the new switch . Do a show vlan on the new switch and see what vlans are created .
12-30-2015 08:35 AM
This ended up being a Port Channel Config issue. Thanks for everyone's suggestions.
12-09-2015 05:53 AM
Hello Swicklund,
it's not quite clear how the switches are connected to each other(on which interface).
but what i can see in the config that you send is that on port 2/0/1 there is no switchport trunk native vlan 254 so it wil use vlan 1 as default, which is in shutdown.
on both sides need to have the same native vlan.
hoop this helps
12-09-2015 08:43 AM
Inn switch is the new one - Gigabit1/0/1 is connected to 2/0/1 on the stack.
On the stack 1/0/1 is connected to the core.
A very simple diagram attached.
I think what you might mean is that we need that command on 1/0/1 on the StudentAnnex switch. Vlan 254 is active on the Inn switch. I will go ahead and try that. Thank you for the suggestion.
12-09-2015 03:54 PM
As long as both switches are trunking you don't need to touch the native VLAN.
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