2810 and WAN PtoP

[dalfon]

We have multiple remote campuses connected to the main campus with PtoP fiber connections run by the city. They are using Juniper VPN's to handle these connections without any filtering according to their engineers. Our newest campus - i have a 2810 at the new campus connecting to a 5308XL at Main. Passing 4 VLANS including VLAN 1 which is the mgmt. VLAN. 10.10.10.x.

We cannot access the mgmt VLAN at the remote location upon connecting the switch. Users can use traffic on the other vlans and get to the internet but no mgmt.

I have another location using a 2610 and everything works fine. Same city fiber setup although a different circuit. I am only using routing on the 5308 xl and am using dhcp for several of the VLANS. Simple setups - no spanning tree or trunking just tagged VLANS and DHCP. DHCP is run on servers on the appropriate vlan so I don't need IP-helper.

If I connect the 2810 to another 2610 switch one hop away from the 5308xl I can use the mgmt. VLAN but lose DHCP and need to use static addressing for the clients to connect.

I can send or post configs but they are very simple.

Any ideas would be helpful.

Don D'Alfonzo

Averett University.

[paulgear]

It sounds to me like your service provider circuit is not set up properly for transparent VLAN trunking.  The best way to analyse this would be to connect directly to the Ethernet trunk coming from the service provider with a laptop using wireshark or similar.

It could be something else, so it would probably be a good idea to post configs anyway to see if anyone can spot a problem.