Solve : TCP/IP Problems?

1.	Solve : TCP/IP Problems?
Answer» I have a fun one ... I have a Dell Inspiron e1505 running windows xp (sp2). It has: Broadcom 440x 10/100 integrated controller Intel Pro/Wireless 3945 ABG Network card and a 1345(?) Network integrated controller Everything was working great on it until Tuesday night ... after a brief cut in service from my isp, the computer will no longer log on to the internet in normal mode. It will, however, work in safe mode + networking (the network integrated controller card does not appear in safemode, so I am not sure of the specs). In normal mode, it will ping itself and loop feedback ping, but it will not ping the dns. The computer actually shows as connected to the internet, but no internet browser will work. Here's what I have tried so far (with help from it advisor from isp): * attempted both static ip address and "automatically assigned" ip address * edited the registry * flushed the dns * uninstalled and reinstalled all network cards * scanned using adaware, spybot, and mcafee virus suite * three system restores to points when the computer was definitely working * disabled the wireless card and connected using ethernet * disabled both the wireless card and the network integrated controller Incidentally, the home hub seems to be working fine since my wife's mac will access the internet as normal. Also, my dell will access via the safemode method. The same problem with internet access occurs on other networks as well. One other potentially unrelated problem ... at the same time the "mouse" (synaptics device) quit allowing the normal scrolling mechanism to work. Unsure if this could at all be related. ANY HELP WOULD BE GREAT!! Try turning off your firewall (software & momentarily) & see if you can connect Another thing you can try is running MSCONFIG & turning off everything reboot and see if you connect...again momentarily Alan <>< I'm confused. How many different networks cards are we dealing here and of what type? Can you ping your gateway? If so, it's a DNS problem. If not, it's a routing problem. What's the output from ipconfig /all from a command prompt?In reply to Deo Gratis: I have tried both of your suggestions ... results, nil. The firewall did not effect the link and I have now been through all aspects of msconfig ... the only way I can GET the computer to link to any other server/computer/etc. is in safe mode. In reply to rob pomeroy: there are three different cards listed in the device manager (the broadcom manages the ethernet connections), the intel is the wireless card, and the other is the 1394 network integrated controller (I checked the numbers for this post). In regular mode, I cannot ping the gateway or anything other than my computer. In safe mode, I can ping everything. The ipconfig /all looks normal in both modes (in fact, it looks the same), GIVING the static ip address that has been assigned to the computer and the correct dns and gateway for the network I connect to at the time (either the LIBRARY or home). Thanks!C'm'on - give us a bit more than that! Quote What's the output from ipconfig /all from a command prompt? i.e. cut and paste it here, please.Here is the ipconfig /all output when using the wireless card (I don't have access to ethernet at the time, but the ip address, gateway, and dns would be the same as the wireless since the it advisor from my isp set these as static on both ethernet and wireless): windows ip configuration host name . . . . . . . . . . . rpc111g primary dns suffix . . . . . rpc.ox.ac.uk node type . . . . . . . . . . . hybrid ip routing ENABLED . . . . . . no wins proxy enabled . . . . . no dns suffix search list . . . . rpc.ox.ac.uk ox.ac.uk ac.uk ethernet adapter local area connection: media state . . . . . . . . . . . media disconnected description . . . . . . . . . . . . BROAD com 440x 10/100 integrated controller physical address . . . . . . . . 00-15-c5-24-be-6d ethernet adapter wireless network connection: connection-specific dns suffix . . . . description . . . . . . . . . . . . . . . . . intel pro/wireless 345abg network connection pysical address . . . . . . . . . . . . . .00-13-02-55-0b-78 dhcp enabled . . . . . . . . . . . . . . . no ip address . . . . . . . . . . . . . . . . . 163.1.121.111 subnet mask . . . . . . . . . . . . . . . .255.255.0.0 default gateway . . . . . . . . . . . . . .163.1.121.254 dns servers . . . . . . . . . . . . . . . . .129.67.1.180 *********** when i ping the ip address, all packets are received. when i ping the default gateway and/or the dns server ... the host is unreachable. this is true in both ethernet lan or wireless. You don't want the NIC and wireless card to be set to the same IP address. What TCP/IP settings are showing on your wife's Mac, out of interest? I think you may have been led a little astray by your ISP here. Both of those IP addresses are public, which is wrong. On your LAN you should be using one of the Class A, B or C networks (see the networking FAQ - link is in my signature). Those settings may be appropriate on your router but are incorrect on your PC. I'm not questioning your veracity, but would you mind also posting the safe mode output of ipconfig /all? I would just like to give it a second scrutiny, if you know what I mean.PS 163.1.121.111 is from Oxford University's public IP pool. If OU is publically exposing the IP addresses of it' workstations, then the sysadm should be taken out and shot immediately. But I doubt that's how things are configured.here's the ipconfig /all from safe mode + networking: windows ip configuration host name. . . . . . . . . . . . . . . . rpc11g primary dns suffix . . . . . . . . . . rpc.ox.ac.uk node type . . . . . . . . . . . . . . . . hybrid ip routing enabled . . . . . . . . . . no wins proxy enabled . . . . . . . . . no dns suffix search list . . . . . . . . rpc.ox.ac.uk ox.ac.uk ac.uk ethernet adapter local area connection: media state . . . . . . . . . . . . . . . media disconnected description . . . . . . . . . . . . . . . . broadcom 440x 10/100 integrated controller physical address . . . . . . . . . . . . 00-15-c5-24-be-6d ethernet adapter wireless network connection: connection-specific dns suffix . . . description . . . . . . . . . . . . . . . . intel pro/wireless 3945abg network connection physical address . . . . . . . . . . . . 00-13-02-55-0b-78 dhcp enabled . . . . . . . . . . . . . . . yes autoconfiguration enabled . . . . . . yes autoconfiguration ip address . . . . 169.254.185.134 subnet mask . . . . . . . . . . . . . . . 255.255.0.0 default gateway . . . . . . . . . . . . . **************** I still did not have access to an wired connection ... thus, i only have the wireless ip information. At this point in safe mode, the computer will not connect to the internet at all (i had not tried using wireless in safe mode prior to this attempt).What router do you have? Can you switch off your wireless and connect with an ethernet cable?i have a bt home hub, and i can connect with an ethernet in safe mode. (at least, i could the last time i tried)Do you know the IP address of the BT Home Hub?According to my wife's macbook, the router's address is 192.168.1.254 her configuration is as follows: ip address: 192.168.1.65 subnet mask: 255.255.255.0 router: 192.168.1.254There you are then; your computer's IP address settings are incorrect. Configure the address manually (switch off DHCP) with the following settings: NETWORK CARD IP address: 192.168.1.66 Subnet mask: 255.255.255.0 Gateway: 192.168.1.254 WIRELESS CARD IP address: 192.168.1.67 Subnet mask: 255.255.255.0 Gateway: 192.168.1.254 Try that and let us know if it works.I'm not at home right now, so I can't (yet) try the ipconfiguration suggested above. However, I am at my office at school and am still having the same troubles. I can connect in safe mode + networking, but not in regular mode. The interesting thing is that the ipconfig /all looks exactly like my first ipconfig posting (with the exception being I am connecting via ethernet wire ... so the ip address is on that device rather than the wireless card) in BOTH safe mode and regular mode. It seems that something is blocking the regular mode system from connecting ... but I can't for the life of me figure out what.

Answer»

I have a fun one ...

I have a Dell Inspiron e1505 running windows xp (sp2).
It has:
Broadcom 440x 10/100 integrated controller
Intel Pro/Wireless 3945 ABG Network card
and a 1345(?) Network integrated controller

Everything was working great on it until Tuesday night ... after a brief cut in service from my isp, the computer will no longer log on to the internet in normal mode. It will, however, work in safe mode + networking (the network integrated controller card does not appear in safemode, so I am not sure of the specs). In normal mode, it will ping itself and loop feedback ping, but it will not ping the dns. The computer actually shows as connected to the internet, but no internet browser will work.

Here's what I have tried so far (with help from it advisor from isp):
* attempted both static ip address and "automatically assigned" ip address
* edited the registry
* flushed the dns
* uninstalled and reinstalled all network cards
* scanned using adaware, spybot, and mcafee virus suite
* three system restores to points when the computer was definitely working
* disabled the wireless card and connected using ethernet
* disabled both the wireless card and the network integrated controller

Incidentally, the home hub seems to be working fine since my wife's mac will access the internet as normal. Also, my dell will access via the safemode method. The same problem with internet access occurs on other networks as well.

One other potentially unrelated problem ... at the same time the "mouse" (synaptics device) quit allowing the normal scrolling mechanism to work. Unsure if this could at all be related.

ANY HELP WOULD BE GREAT!!
Try turning off your firewall (software & momentarily) & see if you can connect

Another thing you can try is running MSCONFIG & turning off everything reboot and see if you connect...again momentarily

Alan <>< I'm confused. How many different networks cards are we dealing here and of what type? Can you ping your gateway? If so, it's a DNS problem. If not, it's a routing problem.

What's the output from ipconfig /all from a command prompt?In reply to Deo Gratis:

I have tried both of your suggestions ... results, nil.

The firewall did not effect the link and I have now been through all aspects of msconfig ... the only way I can GET the computer to link to any other server/computer/etc. is in safe mode.

In reply to rob pomeroy:

there are three different cards listed in the device manager (the broadcom manages the ethernet connections), the intel is the wireless card, and the other is the 1394 network integrated controller (I checked the numbers for this post).

In regular mode, I cannot ping the gateway or anything other than my computer. In safe mode, I can ping everything.

The ipconfig /all looks normal in both modes (in fact, it looks the same), GIVING the static ip address that has been assigned to the computer and the correct dns and gateway for the network I connect to at the time (either the LIBRARY or home).

Thanks!C'm'on - give us a bit more than that!

Quote

What's the output from ipconfig /all from a command prompt?

i.e. cut and paste it here, please.Here is the ipconfig /all output when using the wireless card (I don't have access to ethernet at the time, but the ip address, gateway, and dns would be the same as the wireless since the it advisor from my isp set these as static on both ethernet and wireless):

windows ip configuration
   host name . . . . . . . . . . . rpc111g
   primary dns suffix . . . . . rpc.ox.ac.uk
   node type . . . . . . . . . . . hybrid
   ip routing ENABLED . . . . . . no
   wins proxy enabled . . . . . no
   dns suffix search list . . . . rpc.ox.ac.uk
   ox.ac.uk
   ac.uk

ethernet adapter local area connection:
   media state . . . . . . . . . . . media disconnected
   description . . . . . . . . . . . . BROAD com 440x 10/100 integrated controller
   physical address . . . . . . . . 00-15-c5-24-be-6d

ethernet adapter wireless network connection:
   connection-specific dns suffix . . . .
   description . . . . . . . . . . . . . . . . . intel pro/wireless 345abg network connection
   pysical address . . . . . . . . . . . . . .00-13-02-55-0b-78
   dhcp enabled . . . . . . . . . . . . . . . no
   ip address . . . . . . . . . . . . . . . . . 163.1.121.111
   subnet mask . . . . . . . . . . . . . . . .255.255.0.0
   default gateway . . . . . . . . . . . . . .163.1.121.254
   dns servers . . . . . . . . . . . . . . . . .129.67.1.180

***********
when i ping the ip address, all packets are received. when i ping the default gateway and/or the dns server ... the host is unreachable. this is true in both ethernet lan or wireless.

You don't want the NIC and wireless card to be set to the same IP address. What TCP/IP settings are showing on your wife's Mac, out of interest?

I think you may have been led a little astray by your ISP here. Both of those IP addresses are public, which is wrong. On your LAN you should be using one of the Class A, B or C networks (see the networking FAQ - link is in my signature). Those settings may be appropriate on your router but are incorrect on your PC.

I'm not questioning your veracity, but would you mind also posting the safe mode output of ipconfig /all? I would just like to give it a second scrutiny, if you know what I mean.PS 163.1.121.111 is from Oxford University's public IP pool. If OU is publically exposing the IP addresses of it' workstations, then the sysadm should be taken out and shot immediately. But I doubt that's how things are configured.here's the ipconfig /all from safe mode + networking:

windows ip configuration
   host name. . . . . . . . . . . . . . . . rpc11g
   primary dns suffix . . . . . . . . . . rpc.ox.ac.uk
   node type . . . . . . . . . . . . . . . . hybrid
   ip routing enabled . . . . . . . . . . no
   wins proxy enabled . . . . . . . . . no
   dns suffix search list . . . . . . . . rpc.ox.ac.uk
   ox.ac.uk
   ac.uk

ethernet adapter local area connection:
   media state . . . . . . . . . . . . . . . media disconnected
   description . . . . . . . . . . . . . . . . broadcom 440x 10/100 integrated controller
   physical address . . . . . . . . . . . . 00-15-c5-24-be-6d

ethernet adapter wireless network connection:
   connection-specific dns suffix . . .
   description . . . . . . . . . . . . . . . . intel pro/wireless 3945abg network connection
   physical address . . . . . . . . . . . . 00-13-02-55-0b-78
   dhcp enabled . . . . . . . . . . . . . . . yes
   autoconfiguration enabled . . . . . . yes
   autoconfiguration ip address . . . . 169.254.185.134
   subnet mask . . . . . . . . . . . . . . . 255.255.0.0
   default gateway . . . . . . . . . . . . .

****************
I still did not have access to an wired connection ... thus, i only have the wireless ip information. At this point in safe mode, the computer will not connect to the internet at all (i had not tried using wireless in safe mode prior to this attempt).What router do you have? Can you switch off your wireless and connect with an ethernet cable?i have a bt home hub, and i can connect with an ethernet in safe mode. (at least, i could the last time i tried)Do you know the IP address of the BT Home Hub?According to my wife's macbook, the router's address is 192.168.1.254

her configuration is as follows:
ip address: 192.168.1.65
subnet mask: 255.255.255.0
router: 192.168.1.254There you are then; your computer's IP address settings are incorrect. Configure the address manually (switch off DHCP) with the following settings:

NETWORK CARD

IP address: 192.168.1.66
Subnet mask: 255.255.255.0
Gateway: 192.168.1.254

WIRELESS CARD

IP address: 192.168.1.67
Subnet mask: 255.255.255.0
Gateway: 192.168.1.254

Try that and let us know if it works.I'm not at home right now, so I can't (yet) try the ipconfiguration suggested above. However, I am at my office at school and am still having the same troubles. I can connect in safe mode + networking, but not in regular mode. The interesting thing is that the ipconfig /all looks exactly like my first ipconfig posting (with the exception being I am connecting via ethernet wire ... so the ip address is on that device rather than the wireless card) in BOTH safe mode and regular mode. It seems that something is blocking the regular mode system from connecting ... but I can't for the life of me figure out what.

Solve : TCP/IP Problems?

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