RichB

Can anyone suggest why when I have 4 PCs, all XP, all in a domain, all with same subnet and in the same range, one can not ping the other but all the others can.

A = 10.0.0.12
B = 10.0.0.13
C = 10.0.0.14
D = 10.0.0.15

A can ping B and C and D
B can ping A and D but NOT ping C
C can ping A, B, C
D can ping A, B and C

Problem is there is a printer hanging off C and some of the machines can't connect to it.

ozzy

Do they have the XP firewall enabled?

Can't remember if ICMP Ping is disabled by default, but check under the firewall settings or disable the firewall temporarily.

How do they physically connect to each other?

Stefan

RichB

The firewall is on but greyed out, it says its controlled by a group policy but all the machines are the same. Cant remember how to turn that off but its weird how some work, some don't.

All machines connected to a 1gb switch all with 1gb NICs.

ozzy

You would need to modify the Group Policy to disable it .. or remove them from the domain.

Have you tried swapping the ports around on the switch?

All the PC's completely identical inc. the software builds?

RichB

Cant see the ports being the problem, mail/internet and network traffic through PHS/Access etc is all fine.

Group Policies - AAArrrrgggghhhhhh - Any good quick guides on this? I'm a macman and hate these windows things...

ozzy

It's all done through the Microsoft Management Console. Any admin workstation or server needs the Group Policy snapin to manage the policies held in Active Directory.

You should be able to view the settings, just not change any of them ... I think.

There's a command you can run to view the policy on the local PC, but can't for the life of me remember what it is.

I need to go, but if no one else posts it I'll do so after lunch.

ozzy

Found it.

http://www.microsoft.com/windowsxp/u...gpresults.mspx

Might not be the source, but it's worth checking once you've covered the basics.

I had a weird problem in the past where one of the routes would get lost from a DHCP server. That wouldn't affect PC's on the same subnet though.

Are you using DHCP or static? Might be worth setting the problem ones to static just to recreate the TCP/IP settings.

John1uk

wwhen you setup your pc's on the network did you after connecting them go into network places and setup a home/office network and allow:

printer sharing
sharing of files and folders etc etc

If you have not done this, i would ask you to do it then reboot all the pc's at the same time, then check that you can see all the computers from each pc's network places.

also check that you do not have any spyware on you pc,s as this can block network and internet.

regards john

http://www.pc-medic.net