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Old 06-21-2001, 01:55 PM   #1
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Registered: Jun 2001
Location: California
Distribution: Red Hat 7.1
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Question 3Com ADSL Dual Link Modem install

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!
Old 06-23-2001, 11:37 PM   #2
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Registered: Jun 2001
Location: South Alabama
Distribution: Fedora / RedHat / SuSE
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Your almost home

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 netmask

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 U 0 0 0 eth0 U 0 0 0 eth1 U 0 0 0 eth2 U 0 0 0 lo 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

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 and get Redhat home page. But you need to setup DNS to type

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

put in


using the address of your name server.

then it should work.

Last edited by DavidPhillips; 06-23-2001 at 11:49 PM.


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