From: md@Linux.IT (Marco d'Itri)
To: linux-ppp@vger.kernel.org
Subject: Re: killing a pptp tunnel with a single ping
Date: Sat, 25 Mar 2006 10:53:18 +0000 [thread overview]
Message-ID: <20060325105318.GA5841@wonderland.linux.it> (raw)
In-Reply-To: <20060324232128.GA23810@wonderland.linux.it>
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On Mar 25, Marco d'Itri <md@Linux.IT> wrote:
> This is the reason for me not initially setting the tunnel MTU, I
> did not want to compute the overhead myself. I think that a section
> in your PPTP FAQ explaining how to do this would be very useful.
I tried setting "mtu 1456" on the cisco side and now large pings do not
kill the tunnel anymore even with MPPE enabled, but I do not understand
why pppd on the other side sets the tunnel uses 1452 as the link MTU.
Only the MRU is negotiated:
rcvd [LCP ConfReq id=0x1 <mru 1456> <auth chap MS-v2> <magic 0xbf448cfd>]
sent [LCP ConfAck id=0x1 <mru 1456> <auth chap MS-v2> <magic 0xbf448cfd>]
How can I fix this without forcing the MTU on the Linux side?
--
ciao,
Marco
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prev parent reply other threads:[~2006-03-25 10:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-24 23:21 killing a pptp tunnel with a single ping Marco d'Itri
2006-03-24 23:27 ` Ray Van Dolson
2006-03-25 6:36 ` James Cameron
2006-03-25 10:13 ` Marco d'Itri
2006-03-25 10:53 ` Marco d'Itri [this message]
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