No default gateway when hardwired

Hewlett-packard Compaq presario c700t no...
January 5, 2011 at 23:32:19
Specs: Windows Vista, T2330 1.60 1.5 gig
When I plug my laptop up to our modem, all i get is local access. IPconfig gives me to default gateway or dns suffix. Naturally there is no wireless. My roomates laptop runs fine wired or not and we have the same set up.

Not sure what to do.


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#1
January 6, 2011 at 07:34:41
On both your PC and your roomates laptop open a command prompt window (ie: Start >> Run >> type cmd and hit Enter) and run the following command:

ipconfig /all

Post the output of both in a response here. For info on the easy way to copy/paste from a command prompt window click on my name above in my response and read my "how-to" guide titled, "Post the output of ipconfig (version 2)"

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#2
January 6, 2011 at 07:51:42
What IP address are you getting?

I have a feeling you are getting an APIPA address. This is an automatically assigned address given when your computer can not see the DHCP server. You will know this by the address you get because it will start with...

169.254.x.x

If you have one of these then it probably do to a bad Network Cable or bad port on the Router or it could be your "modem" does not have a built in router. We would know this by the Model Number and Make of the modem. If you could give us that info too it would be handy.

If you are getting a...

192.168.x.x
172.16.x.x through 172.31.x.x
10.x.x.x

Then there is something wrong with how your DHCP server is configured.

In any case like CURT said we need your IPCONFIG /ALL to answer these questions.


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#3
January 6, 2011 at 10:24:52
Went to Mcdonalds and connected without a problem, here is the ipconfig and ipconfig all from there. I will attempt to list the differences from there to here.

Microsoft Windows [Version 6.0.6002]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.
C:\Users\Patrick>ipconfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : Patrick-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : mcd31338.hou.wayport.net (this line does not exist on my laptop with my brothers internet)
Ethernet adapter Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast Ethernet
NIC
Physical Address. . . . . . . . . : 00-1B-38-C6-07-8C
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . : mcd31338.hou.wayport.net (no.cox.net on my brothers internet)
Description . . . . . . . . . . . : Atheros AR5007 802.11b/g WiFi Adapter
Physical Address. . . . . . . . . : 00-1E-4C-99-D3-DE
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::7d51:9f0f:ec93:15f3%13(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.6.37(Preferred) (192.168.1.112)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Thursday, January 06, 2011 12:19:03 PM
Lease Expires . . . . . . . . . . : Thursday, January 06, 2011 1:19:03 PM
Default Gateway . . . . . . . . . : 192.168.6.1
DHCP Server . . . . . . . . . . . : 98.172.62.249
DHCPv6 IAID . . . . . . . . . . . : 318774860
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-0F-0E-1D-11-00-1B-38-C6-07-8C
DNS Servers . . . . . . . . . . . : 192.168.6.1 (68.105.28.12; 29.12; 28.11)
64.134.255.2
64.134.255.10
Primary WINS Server . . . . . . . : 192.168.6.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter Local Area Connection* 13:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.launchmodem.com
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 6:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : mcd31338.hou.wayport.net (no.cox.net)
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 12:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6TO4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 14:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 7:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
C:\Users\Patrick>


There you have it. This is mind boggling. Any advice would be appreciated


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Related Solutions

#4
January 6, 2011 at 10:31:57
Default Gateway . . . . . . . . . : 192.168.6.1
DHCP Server . . . . . . . . . . . : 98.172.62.249

You got a default gateway. You DHCP server does not look right. Most DHCP servers are private not a public IP like you have. Are you sure you have your Network Cards TCP/IP setting set to automatic?

If not try changing your DHCP to 192.168.6.1 or just set it to automatic.

*edit*

DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Nevermind you do have it set to automatic. Something is still wrong with how your DHCP is configured. If I did not know any better I would say that you have a Zombie Bott (Virus) on your computer.

Try going into your Routers Settings and see if it has any area for configuring its DHCP and see if it has an option to set an external DHCP server.

P.S. DHCP asside you have every thing you need to get on the internet. You have a Gateway and a DNS and that should get you there. Try...

PING YAHOO.COM

and see if it gives you an IP for YAHOO.COM.
Also send the working computer IPCONFIG /ALL so we can compare DHCP servers.


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#5
January 6, 2011 at 10:50:57
I just Who Ised the IP and it is a COX DHCP.

http://whois.domaintools.com/98.172...

Do you have a router hooked into the Modem? You need a router to have more than one computer on a Cable Modem. If you don't have one, then you ave to turn the modem off and back on each time you switch computers.


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#6
January 6, 2011 at 13:18:34
hey guys you might want to review this thread to get the whole picture

http://www.techsupportforum.com/net...

that ipconfig is a combo of router and modem

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's


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#7
January 6, 2011 at 14:53:17
It will not allow me into the router. I type in the default IP and it gives me the same "cannot connect" message. When I try to ping www.yahoo.com or www.google.com it tells me the address is wrong.

Ace, are you saying that if I pull the cable from the router and plug it into my computer, I need to power cycle the modem to get it to function correctly? If so, I will give that a shot.

My loopback ping works fine as well. I will try the power cycling of the modem when i try to hardwire it. I will now post the ipconfig/all from this working laptop.

Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Users\T>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : T-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : no.cox.net

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : no.cox.net
Description . . . . . . . . . . . : Realtek RTL8187B Wireless 802.11b/g 54Mbp
s USB 2.0 Network Adapter
Physical Address. . . . . . . . . : 00-16-44-78-C4-5C
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::ed68:7a8c:34e9:6f3f%10(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.116(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Monday, January 03, 2011 11:02:46 AM
Lease Expires . . . . . . . . . . : Friday, January 07, 2011 5:40:41 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 68.105.28.12
68.105.29.12
68.105.28.11
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : Belkin
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : 00-A0-D1-8B-56-46
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 6:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6TO4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 9:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.Belkin
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 10:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:183f:3822:3f57:fe8b(Pref
erred)
Link-local IPv6 Address . . . . . : fe80::183f:3822:3f57:fe8b%11(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 11:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{EC389B8D-0F72-446A-B212-CE797FD8A
C5C}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 14:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : no.cox.net
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #4
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Users\Teresa Pruett>


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#8
January 6, 2011 at 15:02:42
"Ace, are you saying that if I pull the cable from the router and plug it into my computer, I need to power cycle the modem to get it to function correctly? If so, I will give that a shot. "

No, only if you where NOT using a Router would you need to power cycle. If you are using a router then the point in mute. Your new IPCONFIG looks much better (Not Sure Why it is not working now).

You where on the 192.168.6.x subnet and now you are on a 192.168.1.x subnet. Did you do a factory rest of the router or something?

P. S. You might want to follow Wander's post on the other forum because the IPCONFIG almost exactly match the one you posted above. Ther might be a solution there.


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#9
January 6, 2011 at 15:14:40
"When I try to ping www.yahoo.com or www.google.com it tells me the address is wrong."

That is stange. I have never seen that error before. Usually it says Ping request could not find host google.com... Could you post the exact error. Also try pinging yahoo by its ip...

ping 98.137.149.56

Also try accessing Yahoo by putting their IP address in Internet Explorer. This will tell you if you are having DNS issues.


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#10
January 6, 2011 at 16:11:48
Ping request could not find host google.com is the error I am getting. My paraphrase was poorly phrased.
I pingd yahoos ip and got 2 destination host unrechables and 2 timed out.

Tried the ip in internet explorer and got "this address is not valid."


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#11
January 7, 2011 at 08:20:01
If you can ping the router but not the Internet then it is more than a DNS issue. Your packets are either not getting through your router or your modem. Can you ping your modem? To find the modems IP go into your router and look at its wan settings. It will be the default gateway on the WAN side. Most cable modems use 192.168.100.1. If you can ping your modem then it is not the router but something in the modem.

Your cable company may be doing MAC filtering where they will only allow one device on at a time. If that is the case then you need to call your cable company and give them the MAC address on the WAN side of your router. I use to work for COX and Cable America. (Don't ask bad time in my life) Cable America use to do MAC filtering but COX did not this is why I did not mention it before because you are with COX. I have COX my self right now and they have not MAC filtered us yet but I live in Arizona so it may be different where you are.


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#12
January 7, 2011 at 15:02:19
Ok, I plugged my laptop in thru the hardwire late last night and powercycled the modem. wala! I got connected. Stupid me. Now the questions is why the wireless is not working. I was at a previous friends house who was using windoes 7 and it for some reason blocked me from using the wirless as well.

I had to change his wireless set up from wep2 to 64bit in order for me to connect.


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