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j4jack

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Ping one way not the other

2 pc's - attached to a switch NOT a router, both running XP - there is no firewall, XP SP2's firewall is turned off, there is no anti virus/antispyware, both are on the same ip range and subnet. No DNS servers or gateways set up. Have un-installed the net card and re-installed, network card set for auto negotioation for packet handling/link speed etc etc etc

From the desktop i can ping the Name/IP of the laptop and i get a response, can browse folders ets all coolio...but from the laptop to the desktop i get "response timed out" when pinging. Also cannot browse the desktop from the laptop...

There are 5 separate laptops on the network, each can ping and browse each other, but cannot see the desktop. Again no firewall on the desktop. Replaced switch. Replaced cabling.

No LMHosts files
No Hosts files
No Clue how to fix it !
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Rob Williams
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Can the desktop ping itself?

You could try reseting the TCP/IP stack (this will also set NIC to defaults, i.e. DHCP, you may need to change after)
netsh  int  ip  reset  c:\reset.txt

Also check the device manager for "ghost" network adapters bu enabling hidden devices from the menu bar. Delete any if they are not current.
Same default gateway on the laptop and the desktop?

Do dodgy 'hidden' fireway? - Nvidia nforce, for example, gets in the way sometimes.
Some other ideas...

1) start --> run --> cmd --> arp -a
(see if the mac addresses are correct for desktop and laptops)
2) check your network connections. Make sure you only have your 'local area connection' and no other connections. (i've seen the 'internet gateway device discovery and control client' screw things up)'
3) Run a network diagnostic. Start --> Help and Support --> tools -->Network Diagnostics.
4) Start uninstalling any software that's not critical and take a long hard look at the rest.
Check the registry key HKLM\SYSTEM\CurrentControlSet\Services\TcpIp\Parameters - check key EnableICMPRedirect. Value should be '1'.

Though, I'd be very surprised if this was the issue.
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litmuslogic
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j4jack

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No Joy... Tried most of the above, in the end re-installaed the OS - works perfectly! I Learnt a lot of new funky commands though :)
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Thanks a lot for your help
j4jack, no disrespect to litmuslogic, but I am curious as to why you selected ID:21809998 as the "accepted solution". Not suggesting the others should be selected, but none solved your problem and ID:21809998 didn't even have any suggestions as to how to repair. A point refund would have been more appropriate.
Just my thoughts.
--Rob