RE: [ActiveDir] Browsing issues

Wed, 22 Sep 2004 14:50:46 -0700

Russ,
 
You say you're switched and your bandwidth utilization is pretty low, so it's probably not related directly to excessive broadcast traffic.  But that could explain the delay.  One thing that I would check is what "Node Type" your clients are in in regards to WINS name resolution.  That can be configured with DHCP.  You want to have them in P-Mode/Peer where they talk to the WINS server directly or in H-Mode/Hybrid where they talk to the WINS server first then broadcast.  You should be able to use a packet sniffer to see if there is a lot of NETBIOS broadcasts or not.
 
Another thing you could try is to create a LMHOSTS file on your clients and see if that helps any.  If it's a small enough enviroment, that may help identify resources on your servers.  Not an ideal way to do it I know, but it may help you out till you get it totally resolved.  http://www.microsoft.com/resources/documentation/windows/2000/server/reskit/en-us/tcpip/part4/tcpapph.mspx
 
I believe that NETBIOS uses TCP and UDP ports 137-139.  You may want to check if there is any redirection or blocking on those ports. 
 
This technet article has helped me troubleshoot Computer Browser issues in the past.
 
Hope that helps you out,
 
Dave

------------------------------------------------
David J. Perdue
MCSE 2000, MCSE NT, MCSA, MCP+I 
Network Security Engineer, InDyne Inc 
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From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rimmerman, Russ
Sent: Wednesday, September 22, 2004 12:03 PM
To: '[EMAIL PROTECTED]'
Subject: [ActiveDir] Browsing issues

We have one site that has a full T-1 connection to our main hub, and they're in a switched environment.  Whenever anyone at that site brings up "My Computer" on a Windows XP or 2k machine, it often takes 3-5 minutes just to bring up the drives.  If they disconnect all network drives, it comes up immediately.
 
Syncing Outlook to MS Exchange often takes over 10 minutes.  Bandwidth utilization at this site is <35% on the average. 
 
Is there some type of browsing issue (master browser elections) or something that can cause this?  We're on a Win2k AD domain.  This site has their own local domain controller, WINS, and DNS server.  They are mapping drives back to our headquarters across their T-1.  The two sites are physically seperated by about 20 miles.
 
The site has cisco routers and switches.  Any ideas?
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