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2 posts

Wannabe Geek

Topic # 162065 28-Jan-2015 10:12
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I have just connected to a new Spark ADSL connection and use a Windows VPN connection to connect to a remote office (using PPTP connection).

Whenever I attempt to copy a file across the network (VPN) more than about 500kb in size, the copy stops about 30% of the way in and the connection becomes "dead" (though the VPN connection itself remains connected). The connection doesn't accept data again until I disconnect and reconnect.

I am using a Huawei HG630b and the other end has a Mako Networks box. I don't think it's the Mako end that is the problem as I have not had this issue before from numerous other internet connections.

I have read that it could be a setting within my router that is causing this, though there's nothing obvious that I can change within my HG630b.

Any help is much appreciated.


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6 posts

Wannabe Geek

  Reply # 1224036 28-Jan-2015 13:29
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This sounds like it might be related to MTU. You could try dropping the MTU size on either end of the connection to determine if thats the case.
Might even be easy to drop lower the MTU on one of the hosts doing the file transfer to test it out...


1711 posts

Uber Geek
+1 received by user: 447

  Reply # 1224047 28-Jan-2015 14:01
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What's the vpn - windows networking or a vpn client?


2 posts

Wannabe Geek

  Reply # 1224119 28-Jan-2015 15:04
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Thanks for the suggestion. I changed the MTU of my Windows VPN connection (first to 1000), but it didn't start working reliably until I dropped it to 500. 


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