Solved: DSL Modem in Bridge Mode

wesley.roberts · ‎03-29-2008

First off , when I use the word "work or worked" Im reffering to being able to get out on the internet.

Recently I was able to make an Embarq DSL modem work with a cisco router behind it. The modem however was NOT in bridge mode.

Now I want to make this work with the Modem in "bridge" mode. I have the Modem currently in bridge mode but I am unsure of the simplest way to setup NAT. Could someone look at this and reccomened a simple NAT config:

MODEM - Bridge Mode

WAN - fa0/0 67.234.34.76/18

LAN - fa0/1 192.168.1.1 255.255.255.0

LAN - 192.168.1.10 - 192.168.1.254

DHCP gives IPs to clients on LAN

paolo bevilacqua · ‎03-30-2008

If "worked", why not rate the post ?

A concise and effective config example also suggesting how to check on things. My rating, a '5'.

View solution in original post

i-kendall · ‎03-30-2008

Here you go. It assumes you also have a default route to the Internet.

interface fastEthernet0/0

ip nat outside

interface fastEthernet0/1

ip nat inside

ip nat inside source list 10 interface ethernet0/0 overload

access-list 10 permit 192.168.1.0 0.0.0.255

Any LAN ip that tries to go to the Internet will have it's source ip translated to the same as the WAN interface ip. You can look at a show ip nat trans command to see this has happened.

Hope this helps.

wesley.roberts · ‎03-30-2008

Thanks. Worked!

paolo bevilacqua · ‎03-30-2008

If "worked", why not rate the post ?

A concise and effective config example also suggesting how to check on things. My rating, a '5'.