Hi Steve,
I actually have an 887VA-W myself and have been using the built in VDSL
controller for a couple of years now without any problems.
The configuration itself is straight forward. I remember reading that
SIN a while ago and all we need to know/do really is to make sure frames
are tagged with VLAN 101. IOS uses interface Ethernet0 for VDSL. So if
you just create a subinterface and set the encap to be dot1q 101 should
be all you need to ditch the Openreach modem altogether. Here's an example:
interface Ethernet0
no ip address
!
interface Ethernet0.101
description TO ISP
encapsulation dot1Q 101
ip address dhcp
In my particular case my ISP uses DHCP, but of course if you're using
PPP you can adjust the configuration accordingly. I did just that with a
couple of clients and it worked fine.
Couple of considerations I'd keep in mind:
0) I've shut down at0 as I believe the use the same physical interface.
Just in case you have some obsolete/unused configuration in there.
2) Get the latest firmware for the controller from Cisco website and add
it to your config- ie:
controller VDSL 0
firmware filename flash:VA_A_38k1_B_38h_24g1.bin
3) 'show controller vdsl 0' will give a lot of information: firmware
version, synch status, connection stats and etc.
4) If you experience connectivity issues from your hosts/clients, you
might want to look adjusting the TCP MSS accordingly- ie: ip tcp
adjust-mss 1452 should account for your IP, TCP and PPP headers if
that's what you need.
I hope it helps.
Haroldo
