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DFS share using FQDN very slow | OK when using UNC path?

Hi,

I am troubleshooting a DFS issue,
I have a 5 node File Server cluster with DFS setup - Windows Server 2003 & one location.

User’s folders are mapped to \\company.com\Users\JoeBloggs

On Windows 7 these shares are very slow to open and opening Microsoft office files is unworkable, very slow freezing etc...

But,

If I open the share using the DFS UNC path \\company\Users\JoeBloggs - it works perfect, speeds are fine etc...

I have searched the web and tried almost everything available, tried on the Client machines (Windows 7) Trust Centre settings, registry entries to disable file verification.

On the DFS servers,

I have done the following

DfsDnsConfig reg entry: http://support.microsoft.com/default.aspx?scid=kb;EN-US;244380
Dfsutil /pktinfo looks ok
Double checked all permissions on DFS root right down to users directories - all looks ok.

Anyone see this behaviour before.

Thanks, Joe

yo_bee

1.

when you say slow is it slow when you just enter the \\contoso.local or \\contoso.local\files
if Files is the share?

2.

How many DC do you have?

joe90kane

ASKER

15 DC's

Its only slow when using

FQDN \\company.com\

If I use the netbios name \\company\

The speeds are perfect.

By slow I mean browsing the folders and opening MS Office files.

yo_bee

With 15 DC's do you have Sites and Services setup correctly?
If the one site is having issues resolving your S & S might be misconfigured or you did not add that DC to the list of DC's that hold the DFS value.

Can you confirm any of these scenarios?

joe90kane

ASKER

I have ran dfsdiag /TestReferral /DFSPath:\\company.com\share

See attached for the report. All looks OK but for some reason my PC (M02101) is showing up with a warning.

Host name: M02101

Site: HSQ

Domain controller: DNDC01
-------------------------------------------------------------------------------
Host IP address Subnet-SiteMapping in AD
-------------------------------------------------------------------------------
::1 No mapping exists
-------------------------------------------------------------------------------
Warning: The server has IP addresses with conflicting site associations

I have checked the sites and services and all looks ok.
dfs-report.txt

yo_bee

So it does sound like your S & S are misconfigured.
I would double check that and see what you find.

joe90kane

ASKER

I would agree but it is only affecting windows 7 clients. Windows XP clients are working perfectly???

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joe90kane

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joe90kane

ASKER

Resolved the issue.