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PPTP VPN MTU
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PPTP VPN MTU
28-04-2012 12:43 PM
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Hi,
Fibre user here, using a different router (RT-N16 with Shibby Tomato custom firmware).
Am running PPTP VPN on my router, currently have the MTU and MRU set at 1450, however I know PPPoE MTU is 1492.
Is 1450 the correct setting? I don't seem to be getting and drops or packet fragmenation, but wondered if there was an "accepted" figure when using Plusnet?
Cheers,
Chris.
Fibre user here, using a different router (RT-N16 with Shibby Tomato custom firmware).
Am running PPTP VPN on my router, currently have the MTU and MRU set at 1450, however I know PPPoE MTU is 1492.
Is 1450 the correct setting? I don't seem to be getting and drops or packet fragmenation, but wondered if there was an "accepted" figure when using Plusnet?
Cheers,
Chris.
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Re: PPTP VPN MTU
28-04-2012 3:47 PM
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The normal MTU for PPPoA is 1500 these days, but I haven't a clue if your PPTP VPN has any special requirements other than this link http://support.microsoft.com/kb/826159 suggests 1400 for PPTP VPN. If it doesn't work right - Google is your friend as they say. There is one or two other posters on this board that may know the answer but I don't think they are on-line at the moment.
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Re: PPTP VPN MTU
28-04-2012 4:20 PM
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Experiment! Try
ping -f -l 1450 targetname
where targetname is a server on the VPN.
Vary the 1450 up and down and see if with different VPN settings you can get bigger packets across.
ping -f -l 1450 targetname
where targetname is a server on the VPN.
Vary the 1450 up and down and see if with different VPN settings you can get bigger packets across.
jelv (a.k.a Spoon Whittler) Why I have left Plusnet (warning: long post!) Broadband: Andrews & Arnold Home::1 (FTTC 80/20) Line rental: Pulse 8 Home Line Rental (£14.40/month) Mobile: iD mobile (£4/month) |
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