Thursday, 23 May 2013

Cisco Router for BT Infinity

Update: I have recently taken annoyance to some of the details on this post, so removed them.  I guess you will never know.

Well, it has to be said that BT Infinity fibre broadband is pretty awesome.  It also has to be said the BT Home Hub is pretty woeful.  It is actually pretty irritating, the a service so good can be controlled by something so bad.  Anyone with any self-respect will want to swap it out, and here is how.

First, you need to keep the NTE.  That is the white box.  You are going to connect this to the ethernet interface of your Cisco router - assuming it supports vdsl - and give it these commands:

interface FastEthernet0/0  - or whatever will be your WAN interface
 no ip address
 pppoe enable group global
 pppoe-client dial-pool-number 1

interface Dialer1
 ip address negotiated
 no ip unreachables
 ip nat outside
 ip virtual-reassembly
 encapsulation ppp
 dialer pool 1
 dialer-group 1
 no cdp enable
 ppp authentication chap pap callin
 ppp chap hostname bthomehub@btbroadband.com
 ppp chap password 7 0117090D5704090435444F1D0A1102020208
 ppp pap sent-username bthomehub@btbroadband.com password 7 0117090D5704090435444F1D0A1102020208
 ppp ipcp dns request

ip route 0.0.0.0 0.0.0.0 Dialer1

You will of course need to NAT.  Now, like me, I didn't have a wireless router, but don't worry.  Plug a LAN port of the Home Hub into your Cisco network and simple disable DHCP on the Homehub.  The DHCP on your Cisco will give out the correct gateway and the Home Hub switch the wireless traffic.

Done.  Good work.

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