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i have a laptop as the client computer. the two computers are connected bya a wireless network. the router is linksys.
earlier i had dsl and the computers orked fine. now we switched to cable and only one computer can connect at a time. i belive its because isp has assigned only one ip address to us. wht do i do.. please help me out here.
note:
my ip address is 24.157.209.xx

That is strange. You are most likely correct that the cable company has only assigned you one address, but that shouldn't matter if the router is connected to the modem.
You say only one computer can connect at a time. I assume you mean connect to the Internet? If you turn off the connected computer, can one of the other computers then connect? Can the three computers otherwise connect to each other?
I'm also going to go with my standard "paste your ipconfig" request. Please post back with the output of the "ipconfig /all" command (run this at a command prompt. Post back if you don't know how) from all three computers. This should help me or someone else help you troubleshoot further.

yes only one computer can connect to the interent at a time. and the computers can connect to each other. ic an see the client computer onthe host computer. also i tried to runthe network setup wizard in xp and it said that this computer is not connecte to the netowrk.. why's that??
i did ip config /all an dpasted it below.. its kinda fun.. guess u can tell me why.
thanxx in advanceMicrosoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.C:\Documents and Settings\Mahwash Fatima>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : TandM
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : rchrd.phub.net.cable.rogers.comEthernet adapter Rogers Yahoo!:
Connection-specific DNS Suffix . : rchrd.phub.net.cable.rogers.com
Description . . . . . . . . . . . : Realtek RTL8139 Family PCI Fast Ethernet NIC
Physical Address. . . . . . . . . : 00-40-CA-37-95-73
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 24.157.209.35
Subnet Mask . . . . . . . . . . . : 255.255.252.0
IP Address. . . . . . . . . . . . : fe80::240:caff:fe37:9573%9
Default Gateway . . . . . . . . . : 24.157.208.1
DHCP Server . . . . . . . . . . . : 24.153.23.10
DNS Servers . . . . . . . . . . . : 24.153.23.66
24.153.22.195
fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
Lease Obtained. . . . . . . . . . : Friday, November 19, 2004 1:39:31 PM
Lease Expires . . . . . . . . . . : Friday, November 26, 2004 1:39:31 PMTunnel adapter Teredo Tunneling Pseudo-Interface:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : FF-FF-FF-FF-FF-FF-FF-FF
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5445:5245:444f%5
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : DisabledTunnel adapter 6to4 Tunneling Pseudo-Interface:
Connection-specific DNS Suffix . : rchrd.phub.net.cable.rogers.com
Description . . . . . . . . . . . : 6to4 Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 18-9D-D1-23
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 2002:189d:d123::189d:d123
Default Gateway . . . . . . . . . : 2002:836b:213c::836b:213c
2002:836b:213c:1:e0:8f08:f020:8
2002:c058:6301::c058:6301
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : DisabledTunnel adapter Automatic Tunneling Pseudo-Interface:
Connection-specific DNS Suffix . : rchrd.phub.net.cable.rogers.com
Description . . . . . . . . . . . : Automatic Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 18-9D-D1-23
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5efe:24.157.209.35%2
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Disabled

That's the ipconfig output from just one computer, right?
This
IP Address. . . . . . 24.157.209.35
tells me that the computer is directly connected to the modem, or at least is behaving like it is.Please double-check your connections. Based on what you've said so far, they should look like this
cable modem<--patch cable-->Router<--patch cable-->computers
Does that look like what you actually have set up?
Is the cable modem connected to the WAN port on the router? This is key. As I think more about this, I suspect that you have connected the cable modem to one of the router's LAN ports, rather than the WAN port.

have you changed the configuration in the router from DSL to cable? they are not the same and the router config needs to be updated for cable. my brother's router had the same problem, using the doc found on the router site, I updated the router config and everything started working again. he also switched from DSL to cable. Al

i think i know where the problem is now..
i also have cable for tv in the computer. i mean i have another cable going directly into the computer which i use to watch tv onthe computer itself. could this be causing the computer to behave the way it is.???
is there a way to work around thsi situationso that i can both watch cable tv and use cable internet ina network..thanx

Rimfire, I took "i have a laptop as the client computer. the two computers are connected by a a wireless network. the router is linksys" to mean that he has a wired laptop and two wireless computers. At this point, I'm referring to the wired computer. The wireless computers don't appear to be part of the equation. Do you have anything else to contribute?
Moonface, you said "i also have cable for tv in the computer". What kind of cable are you using for this? Is it a coaxial cable (round, with a pin in the center)? If so, then no, it will have no effect on your network setup.

Hmm....it seems that the Realtek RTL8139 is a wireless adapter after all. My skill at interpreting user speak must be getting rusty.

no u see the pc is the host comuter,the one which directly connects to the internet. the modem is connected to the uplink port of the router. and the router is connectd to to the computer. and one cable connects the router to net blaaster for wireless internet for the laptop.
so thats how it is. and the cable for tv is coaxial

Imac,no offence taken. We don't want to start that here! (Take a look at the Win9x Forum).
I noticed that the DHCP server has a real IP address rather than a private address. The router needs to be configured to enable DHCP hosting.

monface, I'm not clear on what you're trying to say in that last post. I think you need to re-read your router's manual though. The router is going to act as the "host", you don't need any of your computers to do that.
None of your computers are going to connect directly to the internet. The router does that, and distributes the connection to the computers.

Make sure the router is setup for dhcp to dole out addresses ,also make sure your wirless nics are also setup for dhcp so they can get their address from the router . if it is working correctly you should be pulling a 192.168.X.X address from the router . Make sure your nic does not have a hardcoded address in it .

how do i make sure that "dhcp doles out addresses" and "wirless nics are also setup for dhcp " please let me know thanx
my ethernet adapter is Realtek RTL1839
router is linksys 5port hub

moonface, what is the model number of your router? No offense, but you are giving very imprecise information, and that's making it hard to figure out what you're talking about.
For example, you said your "router is linksys 5port hub". A router and a hub are two different things, and will work completely differently. If you do in fact have just a hub, rather than a router, you will only be able to get one computer online at a time because the hub can't "split" the connection the way a router does.

i ve been using the linksys router/hub (whtever it is) for past two years. i had it with dsl and with cable and all the computers absoultely ran fine.
why doesnt it work now?

I have no idea. What did you change before it stopped working? That's probably why it doesn't work now.

I may be interpreting wrong, but you say "the modem is connected to the uplink of the router". Shouldn't it be connected to the WAN?

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