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can't ping LAN but can access Internet

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19 replies

by bradq May 30, 2003 last reply Jun 18, 2003 1 view

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Hi. I have something weird happening. I have a computer with ip address 192.168.1.154 and subnet mask 255.255.255.192. The gateway is 192.168.1.129. All the pc's on the LAN can ping each other and the gateway except for this one.

Its a Compaq portable with XP Pro on it. I cannot ping anything on the LAN (not even the gateway). However, I can access the Internet and ping public ip's on the Internet.

I thought it may be Norton Internet Security but I uninstalled it and still have the sameproblem. I can't find any other firewall software installed. This happens when using the integrated nic and also when trying to use a pc card nic. Any ideas?

19 replies

by an_it_guy May 30, 2003

I would suggest you try checking the subnet mask, so that it matches with ur LAN.

by bradq Jun 2, 2003

The subnet mask is correct. 255.255.255.192

by jjoeclark Jun 1, 2003

2 things; check to see if the network cable from the pc to the hub is OK, also try another port on the hub( not the #1 port.
or change the cable it might be a cross over cable.Just take a known good cable from another pc that is working.
Rememberstart from one point and check, try another and check, try

by bradq Jun 2, 2003

It isn't a cabling issue because it has this same problem with a wireless card which the access point is plugged into a seperate port from the port the integrated nic plugs into on the switch.

by vdsa_15 Jun 1, 2003

i've also encountered that problem.
Try re-installing the driver of your LAN card, if it did'nt work, try re-installing your OS

by bradq Jun 2, 2003

I've re-installed the driver and TCP/IP. I was hoping to not have to re-install the OS but have already thought of that unless there is a "quick fix".

by jas03 Jun 2, 2003

I has to be a routing problem. Type netstat -r at a prompt and paste the routing table here. We might be able to figure it out from there.

by bradq Jun 3, 2003

Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 08 02 00 ab 58 ...... Intel(R) PRO/100 VE Network Connection #2 - Pack
et Scheduler Miniport
0x3 ...00 80 c8 0c fe a7 ...... D-Link AirPlus DWL-650+ Wireless Cardbus Adapter
#2 - Packet Scheduler Miniport
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.129 192.168.1.154 30
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.1.128 255.255.255.192 192.168.1.154 192.168.1.154 30
192.168.1.154 255.255.255.255 127.0.0.1 127.0.0.1 30
192.168.1.255 255.255.255.255 192.168.1.154 192.168.1.154 30
224.0.0.0 240.0.0.0 192.168.1.154 192.168.1.154 30
255.255.255.255 255.255.255.255 192.168.1.154 2 1
255.255.255.255 255.255.255.255 192.168.1.154 192.168.1.154 1
Default Gateway: 192.168.1.129
===========================================================================
Persistent Routes:
None

by jas03 Jun 3, 2003

I don't see anything wrong with your table besides the 'metric' part. Do all your other machines have the same 'metric' value (30) for the top line of your routing table?
If not try changing your mask to 255.255.255.0

Another shot in the dark would be to make sure your windows built-in firewall is disabled.

by bradq Jun 18, 2003

Poster rated this answer

by tim.doyle Jun 4, 2003

Can every other machine you login to on the LAN get to the internet? Also, you may be able to browse the net without being able to get ping returns...I am unable to ping any addresses outside of my WAN (like www.microsoft.com) but I can most defintely surf there. I think its an aspect of how my firewall is setup.

by bradq Jun 4, 2003

Yeah all the others work fine. This particular machine can't ping other nodes on the LAN. It also can't access them through Windows Explorer or telnet or any other way at all.

by imaval Jun 4, 2003

Have u tried by interchanging the machines I mean connect ur PC to the port or position where any other PC is working fine. This is how u may come to know about the problem if its is with ur machine(Hardware or software) or with the port and cablepreviously u were connected with. After this u can take any approprite action accordingly.