I have recently switched from Win2k to Red Hat 7.1 and had to ditch my 3Com ADSL PCI and buy the Dual Link external so that I could keep my dsl. I picked the Dual Link because as I was searching through config files in desperation to get the PCI to work, I found a comment section at the end of the pppoe.config file that mentioned my ISP, Citizens Communications, and made reference to the Dual Link and gave an "extra" parameter line.

I figured that meant that the Dual Link was supported so I bought it and set up my nic and the ADSL modem. I get the green light on LAN and for ADSL so the nic is up and running in Linux and the ADSL sees the ADSL line to the outside. I can connect to the modem via Konqeuror and configure it and set up the ADSL config with my login and password for the ISP.

But I cannot get to anything else. No outside sites will launch.

All I get is "unknow host" error messages.

I have been told that the 3Com 812 Router will work, but at a list of $695.00 I would rather hold out hope that the Dual Link can be set up. PPPLLLEEAAASSEE!

I think if you said you can contact your ISP you mean that it is working.

The error you mention is typical of not having a default route.

I guess you have the IP they gave you in already. Thats the first line below. If not you can do this:

ifconfig eth0 11.11.11.111 netmask 255.255.255.0

Substitute you Ip and Netmask and interface.

[david@xxxxxxx david]$ /sbin/route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
11.11.11.111 0.0.0.0 255.255.255.0 U 0 0 0 eth0
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
11.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 11.11.11.1 0.0.0.0 UG 0 0 0 eth0

See the line with UG, that is the gateway server. Without it you are lost. To add it do this:


route add default gw aaa.aaa.aaa.aaa

If it is there and wrong number in address do this first:

route del default gateway


this should set the default route for you, you need to put in the correct address for you isp's default gateway, where a is.

If everything goes well you should now be able to ping a computer on the web or type in an address in browser like http://216.148.218.197 and get Redhat home page. But you need to setup DNS to type www.redhat.com.

You can do this by editing /etc/resolv.conf

put in

nameserver aaa.aaa.aaa.aaa

using the address of your name server.

then it should work.