So what modem are you using to connect to the VDSL2 service?

BT GEA-FTTC is usually a PPPoE presentation. VCMux PPPoA 0/38 is the old ADSL/ADSL2+ type presentation.

Okay so it really is PPPoE - in which case testing each line at the same time to three computers needs to be done, as if that works fine you are looking at an oddity with the Cisco rather than something in the Openreach or BT network

In reply to a post by helix_quazer:

I will see if its possible to test the 3 lines at the same time. There are 3 lines and yes they are all with BT, as far as I can tell the quoted 180mb/s is WAN to LAN and I am running PPPoA over the lines. SNMP monitoring on the router shows the CPU is not having any problems at all

Do you not have the VDSL modules installed in the 2911? It can, I believe support up to four and they will support profile 17a.

I have 3 VDSL modems where the lines terminate, they then plug into the Cisco via an ethernet cable. I have just plugged them into gig ports.

For testing you won't need three routers, you can create a PPPoE session on a PC just ensure you have a firewall up to protect the machine as it will be directly on the Internet

How do you mean? I'll definitely run the test if I have a way to do so without using multiple routers, I assume I will still need to take the lines out the bonding?

Yes disconnect lines from the Cisco and connect Ethernet cable from Openreach modem to the PC Ethernet port and then configure a PPPoE session.

How to do that exactly will vary according to what operating system you have.

you are looking at an oddity with the Cisco

You so know it's their set up and/or the kit.

But I have 3 VDSL modems that connect to the Cisco, I can't plug them all into 1 PC

Use 3 PC's dude.

Edited by deleted (Thu 30-Jan-14 19:14:00)