Hi Giuseppe,

Switch is 2948 (correction) and is client in VTP. VTP domain info is updating correctly. I can see all the VLANs and I see the update taking place regularly from the server. Native VLAN1 is associated with the ports.

Hello Arthur,

this is good news.

this means the port to core switch is in trunk state.

check also the native vlan on both sides of the link even if VTP is working it should be fine.

also, verify if L3 services are available in vlan1 on this campus or if for example DHCP service is missing on this vlan1.

also as a basic test I would do the following:

put two PCs to two ports, give them two ip addresses in the same subnet and verify if they are able to talk port to port without using the trunk link.

Sorry if these are basic suggestions but there is still something to be checked before starting to think the switch is not working properly.

check also with

sh cam dyn

if you see MAC addresses in the CAM table.

Hope to help

Giuseppe

OK...

I put two PCs with fixed IPs on same subnet as switch. I can ping the switch from both PCs. I can also ping other systems on the network from the PCs BUT the PCs cannot ping/talk to each other. And also I cannot ping the PC from the switch console.

What is going on?

Firewalls on the pc's ???