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Cisco 2960 Trunk Problem

Asked by vwlupoboy in Network Operations, Network Switches & Hubs, Network Routers

Tags: Cisco, Catalyst 2960 24 TT L

I have setup a trunk between a 4503  and a 2960 it seems to be partly working as I have 7 Vlans setup and data is passing between them. The problem is that spanning tree, vtp dont work across the trunk. I have a setup a number of these trunk with a 2950 and it works ok if I plug a 2950 into the trunk port on the 4503 it works correctly and if I then plug the 2960 into another port setup as a trunk on the 2950 it works correctly I just cant get it to work direct.

When they are connected directly I can see the 2960 from the 4503 using CDP but not in the other direction.

2960 Port Configuration
!
interface GigabitEthernet0/1
 switchport mode trunk
 speed 1000
 duplex full
!

4503 Port Configuration
!
interface GigabitEthernet2/29
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,3,10,14,17,25,29
 switchport mode trunk
 speed 1000
 duplex full
!
[+][-]12/13/08 09:45 PM, ID: 23166711Expert Comment

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