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hugo929
Joined: 27 Oct 2006
Posts: 6163
Location: China
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 Posted: Thu Jul 30, 2009 11:07 am Post subject: problem of internet sharing by ADSL |
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Hi, I encountered a very strange problem when sharing internet by ADSL.
My server has two net adapter cards installed.
One card is connected to ADSL modem and the other net card is connected to a HUB which connecting more computers in LAN.
The ADSL modem has a telephone line connected to my local ISP.
Now the problem is :
It works great without connecting to HUB.
But once the RJ45 is pluged into to the HUB, then the internet becomes unavailable immdiately.
Who can give me some advice.
It is very annoying. I googled but found no lukcy solution.
Thanks in advance!
Hugo
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Chiefish
Joined: 23 Sep 2007
Posts: 2153
Location: Northwest N.J. U.S.A
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| Posted: Thu Jul 30, 2009 11:28 am Post subject: |
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Go out and spend $20 on a cascading hub, plug youre dsl into the hub and all the rest of the machines into the hub and all problems will be solved. I would guess that the host server is getting confused in which network it should be connecting to. But I am not a networking expert. I have however had up to 8 machines hooked into one cascading network hub and they all connect directly to the internet with there own internal IP numbers without any trouble.
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hugo929
Joined: 27 Oct 2006
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Location: China
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| Posted: Thu Jul 30, 2009 11:38 am Post subject: |
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| Chiefish wrote: | | Go out and spend $20 on a cascading hub, plug youre dsl into the hub and all the rest of the machines into the hub and all problems will be solved. I would guess that the host server is getting confused in which network it should be connecting to. But I am not a networking expert. I have however had up to 8 machines hooked into one cascading network hub and they all connect directly to the internet with there own internal IP numbers without any trouble. |
Sorry, I dont make it clear.
My server act as a proxy server, and all other computers in LAN is via this proxy server to internet.
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Chiefish
Joined: 23 Sep 2007
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Location: Northwest N.J. U.S.A
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| Posted: Thu Jul 30, 2009 12:04 pm Post subject: |
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Than maybe you need to enable internet sharing on the host machine.
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Marcin
Joined: 02 Jan 2005
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Location: Poland
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faber
Joined: 18 Dec 2006
Posts: 315
Location: Poznan, Poland
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| Posted: Thu Jul 30, 2009 3:05 pm Post subject: |
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| Please show your routing table when you do not have Internet. (cmd - "route PRINT") |
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Qwerty
Joined: 20 May 2005
Posts: 3141
Location: Germany
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| Posted: Thu Jul 30, 2009 3:24 pm Post subject: |
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| Can you access the Internet from your server when it's other network card is connected to the hub? |
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hugo929
Joined: 27 Oct 2006
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Location: China
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| Posted: Thu Jul 30, 2009 5:13 pm Post subject: |
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| Chiefish wrote: | | Than maybe you need to enable internet sharing on the host machine. |
I installed a Proxy server software to provide internet sharing so I needn't to enable the built-in internet sharing function of windows XP.
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hugo929
Joined: 27 Oct 2006
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| Posted: Thu Jul 30, 2009 5:14 pm Post subject: |
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| Marcin wrote: | | you are connecting with not crossover cables to hub ? |
I am not sure with crossover or not. but is it a problem ? 
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hugo929
Joined: 27 Oct 2006
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| Posted: Thu Jul 30, 2009 5:18 pm Post subject: |
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| faber wrote: | | Please show your routing table when you do not have Internet. (cmd - "route PRINT") |
It print lot of thing and I cannot grasp what it is complaint 
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hugo929
Joined: 27 Oct 2006
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| Posted: Thu Jul 30, 2009 5:19 pm Post subject: |
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| Qwerty wrote: | | Can you access the Internet from your server when it's other network card is connected to the hub? |
I exchanged both cards but the problem remains
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faber
Joined: 18 Dec 2006
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Location: Poznan, Poland
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| Posted: Fri Jul 31, 2009 1:21 am Post subject: |
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| hugo929 wrote: | | faber wrote: | | Please show your routing table when you do not have Internet. (cmd - "route PRINT") |
It print lot of thing and I cannot grasp what it is complaint |
you can redirect command output to a file "route PRINT > c:\route.txt" and insert content of c:\route.txt here.
I suspect that you have the wrong default route. |
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hugo929
Joined: 27 Oct 2006
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Location: China
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| Posted: Fri Jul 31, 2009 1:22 am Post subject: |
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Faber's suggestion is most helpful. I fixed the problem using "route" cmd to modify the routing tabel 
Thanks
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