very slow logon on different subnet

[wanyph]

Hi,

I have Subnet A:
172.16.1.0/255.255.255.0 with all servers and many XP clients. All working very well.

and I have a new Subnet B:
172.16.2.0/255.255.255.0

Layer 3 switch is connecting the two subnets.

I moved one clinet from subnet A to subnet B.
When I try to logon, I have to wait about 10-15 minutes
to be logged on. I can ping the domain controllers,
and see the sysvol,netlogon shares.

In eventlog, I see this errors:

1054: Windows cannot obtain the domain controller name....
1030: Windows cannot query for the list of GPO......
1058: Windows cannot access the file gpt.ini.......

I dont´t have a firewall between the subnets.

Do you have a hint for me?


thanks,
mewi

 

[porkchopexpress]

Can you access your DNS servers from subnet B? Also you could check if your DNS settings are correct on the client.

Is it possible that the layer 3 switch is filtering broadcasts?

 

[wazzup2474]

on the pc run ipconfig /flushdns then ipconfig release and a renew

 

[wanyph]

Hi,

Yes, the switch is filteting broadcasts (layer3)
Do we need broadcasts?

DNS settings are ok.

mewi

 

[porkchopexpress]

I think you will need too allow broadcasts or use WINS, some Windows networking still uses NetBIOS especially the browse list. It is possible to run a DNS only setup but it requires alot of effort making sure all of your apps will be happy.

http://www.comptechdoc.org/os/windows/win2k/win2kwins.html