Date: Tue, 9 Feb 2010 12:59:36 -0800 From: Nerius Landys <nlandys@gmail.com> To: Chuck Swiger <cswiger@mac.com> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: Max UDP packet size + Java: weirdness Message-ID: <560f92641002091259q4f4c0e3aq4c4b4696895c1f73@mail.gmail.com> In-Reply-To: <021E6C4C-4EDD-4683-B2F0-0F2FCAE18FFF@mac.com> References: <560f92641002091241h65d4fb70sa7daafca885a2b1d@mail.gmail.com> <021E6C4C-4EDD-4683-B2F0-0F2FCAE18FFF@mac.com>
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> You've encountered: > > % sysctl net.inet.udp.maxdgram > net.inet.udp.maxdgram: 9216 > > However, increasing it will guarantee that you will exceed even normal jumbo frame size and thus depend upon IP fragmentation / reassembly for the traffic. I don't consider that to be a good idea, but it might be OK for local traffic.... Wow thanks. So it normally fits in 1 IP packet? (What about the MTU being like 1500 or something?) What's wrong with fragmentation? Any links to explain this? This isn't local traffic by the way, I will be sending stuff between a data center in San Diego and a data center in Chicago.
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