getting a linksys wrt54g to work with a Speedstream 5100 dsl modem

Posted on 2006-05-06
Medium Priority
Last Modified: 2012-05-05
I have been banging my head against this problem for 2 days now. I have a speedstream 5100 modem that works well -- I'm connected to the internet through it now. I just bought a linksys wrt54g router because I want to put more computers on the internet. For the life of me I cannot configure the linksys to work with the speedstream. I know others have had similar problems, but no particular solution seems to work for me. I also know that the modem is on while the linksys is on
Question by:imfinn
  • 2

Accepted Solution

Inteqam earned 500 total points
ID: 16624892

Expert Comment

ID: 16624894
Is it a 5100a or a 5100b? When you have modem plugged straight into computer, you can access it at, should ask for modem access code, (on bottom), then you can click 'advanced' > ppp location and set it for 'on computer'. There may also be a link for technician stats, it will give you info about isp connection. You should / might be able to browse but ISP may need original MAC address of machine (network adapter} you used when 1st signing up. Or if set to PPOE, it would look for name / PW in order to access INternet through ISP.
Anyway, try (after setting PPP on computer) Modem into WAN of router, access router, set PPOE > insert Log-in name / PW and save all settings. Then try homepage, if no, have router "clone MAC address" of the Network adapter you had the 5100 plugged into. Now it should work, even if no <INTERNET> light. ETHERNET light should be constant. Have router use DHCP to address machine independantly of what ISP addresses router, which it will do when modem (having connection confirmed with DSL light)
Note: You will Not be able to access modem through router unless the modem thinks it is computer. But you don't want to, or need to.
The other way, PPP location set 'on Modem', means the modem signs into ISP and then it assigns IP address with a timeout around 20 minutes. By getting connection test results when modem is connected to computer, it may seem to make sense, by understanding how ISP knows that modem access code / MAC address, and lets the settings of modem determine if router needs to sign in or not. If PPP is 'on modem', it will be looking for the MAC address of computer, that is why you may need to clone that address into router, so the router can appear as the machine to the modem, than the router assigns net address to computer.

Assisted Solution

Davidloc earned 500 total points
ID: 16672265
Make sure the 5100 is in "bridge" mode or a router will not be able to do the PPPOE authentication.

Setting up "Bridge Mode"

To get to this option, open your web browser, go to, click Advanced and chose “Bridge Mode”. Plug the WAN or internet port of the router to the Ethernet port on the modem . Now set up the WRT54G for PPPOE entering the user/pass an set the router time. Bridge mode bridges the DSL and ethernet and has NO address , eg will change to (probably) which will allow the router to configure itself to the WAN , NOT the Speedstream which is whats happening now.

Hope this helps

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