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The remote procedure call failed.

Posted on 2010-08-23
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Last Modified: 2012-05-10
This might be a tad complicated to explain but I will do my best.

We have a EoIP tunnel setup between our sites so we can achieve a LAN to LAN connection

The remote end is as follows,

Firewall -> LAN Interface
Firewall -> WAN interace
Firewall -> EoIP (local subnet)

Our end

Firewall -> LAN Interface
Firewall -> WAN interace
Firewall -> EoIP (local subnet)

services are working fine such as SMB however to one particular SAN device I am getting \\server is not accessible you might not have permission

The remote procedure call failed

This has been working fine until we went from VPN to EoIP which bypasss all firewall rules and goes straight in our L3 Switch.

Any ideas would be great
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Question by:fluk3d
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by:DrUltima
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I guess a couple of questions come to mind:

When using a UNC, you have basically three different methodologies to test it out:
  1. \\NETBIOS (\\Servername, as you indicated above is not working)
  2. \\FQDN (\\servername.domain.local, uses DNS)
  3. \\IP_Address (\\192.168.1.16, replace your SAN's IP there)
Have you tested all three translations and do all three fail?  This is generally a good place to start isolating traffic issues.  If you have, do you get the same error with all three methods?

Justin
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by:fluk3d
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Thanks for the Reply Justin,

I tried your suggestions, and still produced all the errors above. I bypassed the router, and connected a machine to the EoIP device to test, and still same problem.

I escalated the issue to our ISP who setup the device and they found a problem with the return bandwith.

Will update this page once we found the problem in case someone runs into the same problem.
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DrUltima earned 500 total points
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RPC will expect a reply within a certain amount of time.  If you are having bandwidth configuration issues on your ISP side, it may well be the issue.  Keep this Question open until you know for sure.  I will continue to monitor.
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by:fluk3d
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Thanks!
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by:fluk3d
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thank you
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by:DrUltima
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You are welcome!  I am glad it is resolved for you.
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