Messages in this thread | | | Subject | Re: [2.6.0-test1-mm1] TCP connections over ipsec hang after a few seconds | From | Sean Neakums <> | Date | Sun, 20 Jul 2003 13:29:24 +0100 |
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James Morris <jmorris@intercode.com.au> writes:
> On Sat, 19 Jul 2003, Sean Neakums wrote: > >> twenty. The problem seems unrelated to the amount of data >> transferred; I've tried both bulk rsync transfers and ssh sessions. >> I've also tested the same boxes over 100baseT; still happens. > > It sounds a bit like a pmtu problem related to the wireless bridge, but > that would be dependent on amount of data transferred and should not > happen on 100baseT.
I am seeing a lot of "pmtu discvovery on SA AH/03537192/c0a80003" type messages (I forgot to check for them when on 100baseT; will recheck that). Are these indicative of such a problem? I seem to recall that reducing the max MTU is not as straightforward as just adjusting the interfaces' mtu setting. What should I do to eliminate pmtu as the source of the problem?
> Transport mode (just blowfish encryption) looks to be working ok for me, > I'm able to ftp uncompressed kernel tarballs between two boxes over > gigabit ethernet with no apparent problems.
I had been using 3des with AH; just retried with blowfish 448 and no AH with much the same result.
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