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DSL, a Router, & a Hub

By lburk ·
I have an issue with a DSL customer that is puzzling me and am looking for feed back... Well the customer has DSL and the DSL modem runs into a Hawkings Technology router and that in to a hub which has 3 computers hooked on to that and all sharing the internet...Well... There was a nasty storm and the hawkings router and the hub got hit. I tried hooking the DSL modem directly to a Macintosh and to another pc that were in the house and could not get it to work and then tried my laptop with no luck. However I then had the phone company check out the line and everything was ok on their end ..I took the lap top to the telephone company and could not get it to work on the laptop with their ip and a different modem.. we then changed the IP to a different number on the same port and it would work with the laptop?? this I thought was strange.. well anyway we thought we would then just change the ip and it would work .. I go back to the customers and turn on the lap top to make sure it still is working and it is even worked with their DSL Modem... so this leads me to think the DSL modem is still ok.. I then tried the Macintosh and the other PC again and neither would work even with the new IP.. I even went as far as trying a different NIC in the PC to see if the existing NIC was also hit by lightning and this did not help either.. So I guess my questions are Why would an IP just stop working? and does anyone have any suggestions of what the issue might be.. Oh and one other thing I have already tried going to safe mode and then removing the network settings and then re-adding them. This did not help either.. Any suggestions would be appreciated and if you need further info to help think this through let me know.

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DSL, a Router, & a Hub

by Stillatit In reply to DSL, a Router, & a Hub

In the initial setup, was the user paying for multiple IP's, or was the router doing Network Address Translation (NAT)?

If the router was using NAT, the station addresses behind the router are typically non-routable addresses, like 192.168.0.2. If you have this address on a machine, the machine will not talk to the DSL modem directly, only through the router.

Find out from the phone company what IP address(es) are assigned. Then, one by one, test the various computers on site by setting it to one of the assigned IP addresses, and attaching the computer to the modem. NOTE that this will probably require either using a hub or X cable. Any computer which will not work in this mode may have a problem.

(Another test for the comptutersis to test that they can ping each other when they are all connected to the same hub, with all different static addresses on the same subnet.)

Once you know the computers are good, it is time to replace the router. These routers have many features, so read the manual carefully. The following things are areas of concern:

NAT - use it or not.
DHCP - If you are using NAT, you probably want it.
FILTERS - This is your firewall. Do this after everything else works.
DNS relay - If it is there, note that it probably only works for one range of addresses.
SPOOF - If, as some systems do, the DSL system insists on talking to only one MAC adddress, this feature lets the router adopt that address (some routers only).
LOGIN - Some systems usea system called PPOE, which requires a username and password. If you need these, put them in.

Good luck.

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DSL, a Router, & a Hub

by lburk In reply to DSL, a Router, & a Hub

Thank you for your answer.. it helped somewhat.. After trying some of the things you suggested and it not working we just set it up so it should work then left it alone for a 3 hour period went back and it started working.. I am actually wandering if the computers were remembering MAC addresses or something and they just needed time to re-adjust before it would work again.. not sure.. Thank you for your answer.

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DSL, a Router, & a Hub

by kmerrillt In reply to DSL, a Router, & a Hub

It sounds like the router and hub might have lost their configuration settings for IP address. Have you tried reinstalling the router and hub and renewing the addresses? Then of course you might have to renew all addresses on all PCs as well.

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DSL, a Router, & a Hub

by lburk In reply to DSL, a Router, & a Hub

I tried this many times to no avail. Thanks any way.

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DSL, a Router, & a Hub

by lburk In reply to DSL, a Router, & a Hub

This question was closed by the author

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