On Mon, Dec 15, 2008 at 4:12 PM, [email protected]
<[email protected]> wrote:
> We have 2 sites/locations connected a site-to-site VPN...

  Try ping'ing with larger packet sizes.  Try multiple sizes, such as
500, 2000, 10000, 30000, 60000, and 65500.  Might be an issue with
path MTU.  That's not uncommon with VPNs, since you're encapsulating
datagrams inside datagrams -- an already max-size datagram then won't
fit without fragmentation.  That wouldn't show up with the default
ping of 64 bytes.

  Could also be a name resolution issue.  I've seen name resolution
issues screw-up SMB, even when you give an IP address for the server
name.  Along those lines:

  Do you have WINS server(s) configured with all computers at all
sites using the same set of WINS server(s)?  If you are not using
WINS, do you have NetBIOS-over-TCP/IP force-disabled on all clients?

  Describe your DNS topology, including domains, nameservers, which
sites which nameservers are at, and which nameservers which clients
are configured to use.  You can substitute names if you want, but be
complete.

-- Ben

~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~

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