I have a Cisco 2900 XL that a coworker decided to move, in doing so, he unplugged everything and put the cables back in the wrong ports on accident. Now our trunk port fa0/24 on the Cisco 2900 won't stay up. It trunks to a Cisco 2600's fa0/1 port. Both ports have the same protocols and are setup as trunks.
When I plug a laptop into the cable leading to the Cisco 2600's 0/1 port, then the Cisco 2600's fa0/1 stays up (of course without communication since it's a trunk but at least it doesn't shut down) But as soon as I plug the cable from the Cisco 2600's fa0/1 gets plugged back to the Cisco 2900 fa0/24 of switch a, both ports go down. I don't see any port security on them either which was my first thought.
On the Cisco 2900 there are multiple VLANs on it as well. 4 ports to VLAN 50, 4 ports to VLAN 55, port fa0/1 goes to VLAN52, ports fa0/2-fa0/12 and fa0/23 to VLAN200, fa0/13-fa0/22 to VLAN52, fa0/24 trunked to the Cisco 2600.
Of course now that I am home, I can't remember the exact versions of IOS on the Cisco 2900 but I think it was 12.2 (or 12.0). Also the running-config shows that VLAN1 is down and VLAN 99 I can't remember if it's up or down but they aren't assigned to any specific ports.
This is my first time logging onto a Cisco device so I am certain I have far too vague of information and I have someone who will be able to fix it on Tuesday but I am hoping to see if there is something I can figure out because I don't like not being able to fix it :-)
If anyone has some ideas of obvious newbie mistakes, it would be appreciated. I know how to do the basic commands like conf t, int fa0/24, sho running-config ... stuff like that but I would think it would be something super obvious to an experienced person