1841 SHDSL configuration

romeoval1 · ‎08-19-2007

Hello,

I am trying to configure an 1841 router with an SHDSL modem card. The ISP has given us the routable IP address, subnet mask and gateway, but nothing else. They say we should be able to create a bridged connection from the SHDSL modem to fe 0/1.

In order to set this up wont we need a username and password to input into the modem configuration? Is it is possible to bridge the connection between the modem and the ethernet interface.

Any help would be appreciated, I have searched the web looking for help with this and am finding it mighty hard to find. I have configured pppoe connections before on 827 routers, is it similiar to this?

Regards

Matt

paolo bevilacqua · ‎08-20-2007

According to your description, ISP is running "bridged 1483" encapsulation. Please confirm with them, if that is the case, configure:

int atm0.1 point-to-point

pvc 8/35 <-- or whatever else

bridge-group 1

int bvi 1

ip address 1.2.3.4 255.255.255.240 <-- As given by ISP

ip nat inside

int vlan1

ip address Y.Y.Y.1 255.255.255.0

ip nat outside

bridge irb

bridge 1 route ip

bridge 1 protocol ieee

ip route 0.0.0.0 0.0.0.0 x.x.x.x <--- default GW as per ISP

ip nat inside source list 1 interface atm0.1 overload

access-list 1

permit ip Y.Y.Y.0 0.0.0.255

Hope this helps, please rate post if it does!