I have two older layer 2 Cisco 2960's that I am attempting to get to talk to each other but having difficulties. The median between them is an old wireless access point/antenna that is acting like a bridge and should just be passing traffic. Building A has a 2960 which is connected to a sonicwall and dsl. Everything works fine in Building A. Now we would like connect Building B to Building A. The wireless antenna on each end plugs into each 2960. I get a green link light, but the 2960 in Building B cannot ping the 2960 in Building A, nor can it ping any other devices on the network.
The port config on each uplink on each 2960 is as follows:
switchport trunk native vlan 20
spanning-tree link-type point-to-point
The ip defaulkt gateway on the Building B switch is the Sonicwall.
The previos port config I was attemping to use on each 2960 was:
switchport mode trunk
spanning-tree link-type point-to-point
But then I received vlan messages such as:
*Mar 6 22:11:43.002: %SPANTREE-2-RECV_PVID_ERR: Received BPDU with inconsistent peer vlan id 1 on GigabitEthernet0/1 VLAN20.
*Mar 6 22:11:43.002: %SPANTREE-2-BLOCK_PVID_PEER: Blocking GigabitEthernet0/1 on VLAN0001. Inconsistent peer vlan.
*Mar 6 22:11:43.002: %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet0/1 on VLAN0020. Inconsistent local vlan.
So I changed the port config to use:
switchport trunk native vlan 20
spanning-tree link-type point-to-point
I no longer recieve the errors but unable to talk between the two switches.
If I plug in the cable out of the wireless access point in Building B into a laptop, it works fine. So I know traffic is being passed through this old wireless antenna. I just don't know why when it's plugged into a switch, why it wouldn't be working. Do the switch ports need to be access ports?
Any help would be appreciated. See crude drawing attached. Thanks.
