In relation to my previous post on replacing a TalkTalk router with a Cisco 800, the steps below are for doing the same with BT Infinity.

Openreach Modem: Huawei HG612
BT Home Hub 5 – Type B


There is plenty information around on making this change but as I couldn’t find one blog post with all the information, I decided to write one. If you have any questions feel free to comment below.

Unlike TalkTalk fibre, BT Infinity uses PPPoE and therefore requires a Dialer interface, authentication method/credentials and a few other changes for this to work. For the username you can use ‘’ as I did below and the password can be anything, I used ‘bt’.

controller VDSL 0

interface Ethernet0
no ip address

interface Ethernet0.101
encapsulation dot1Q 101
pppoe enable # does not necessarily show when executing 'show run'
pppoe-client dial-pool-number 1

interface Dialer0
mtu 1492
ip address negotiated
ip access-group OUTSIDE_IN in
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
ip virtual-reassembly in
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
dialer-group 1
ppp authentication pap chap ms-chap callin
ppp chap hostname
ppp chap password 7 130703
ppp ipcp address accept
no cdp enable

ip nat inside source list 1 interface Dialer0 overload

ip route Dialer0