Cisco VPN client or DNS error?

Hi experts,

From time to time, my users are missing the mapped drives when logging on using Cisco VPN client. Sometimes the drive letters exist, but are empty. And now and then the drive letters are missing completely. Even when trying to run login script.  (e.g. Net use j: \\servername\sharedfolder\folder ) it cant establish the connecting.
From start run, when typing \\servername\sharedfolder\ there are no visible shares  they are all missing.

But sometimes it helps typing \\ipadress\sharedfolder and the shares are showing.

Thanks in advance.
/David
dsl77Asked:
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Jay_GridleyConnect With a Mentor Commented:
It would explain that you are unable to connect using \\servername but that it works using \\ip address

If the name resolution doesn't work this is expectable behaviour.
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chops_ukCommented:
just a thought... i'm wondering if it's to do with name resolution.. and if the shares are empty then it *could* from a previous authentication to the network.. since the ip connection's available you see the files, but the user's not reauthenticated to the network (due to dns resolution ??) therefore has no permission to list files..
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dsl77Author Commented:
Would this explain why it sometimes works with the ip connection?
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dsl77Author Commented:
Is there a tool to verify and fix this?
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Jay_GridleyCommented:
You could try adding the servername / IP address in the hosts file of a test client. This way you should be able to ping the server on it's name. If this works the DNS works correctly.

Then try if you are able to map the drives the normal way. If this works it is indeed a DNS problem. If not... we'll have to keep looking ;-)
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chops_ukConnect With a Mentor Commented:
You really need to see if there's a pattern from when clients cannot connect to determine why (IF) it's DNS.

A simple 'ping server' is enough of a tool to determine if DNS resolution isn't happening.

Please could you let me know what your DHCP scope is giving the remote and local clients for DNS servers.
possibly there are 2 but one of them is inaccessible via VPN due to routing issues.. therefore when one times out, a connection can't be made.

I'd be grateful if you could get me some more info on what you're seeing.. are you technically comfortable with me asking you these questions or would you like a bit more explicit assistance on how to do this? (sorry, I don't know what level you're at)...
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chops_ukCommented:

how did you get on?
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dsl77Author Commented:
Had a minor 'bad' DC2 running - this was causing the client confusing
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