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- Newsgroups: comp.protocols.tcp-ip.ibmpc
- Path: sparky!uunet!cs.utexas.edu!torn!maccs!beame
- From: beame@maccs.dcss.mcmaster.ca (Carl Beame)
- Subject: Re: Maximum UDP packet size
- Message-ID: <1992Jul29.025917.1452@maccs.dcss.mcmaster.ca>
- Keywords: UDP PCTCP packet size
- Organization: McMaster University, Hamilton, Ontario, Canada.
- References: <1992Jul28.214507.5122@cactus.org>
- Date: Wed, 29 Jul 1992 02:59:17 GMT
- Lines: 32
-
- In article <1992Jul28.214507.5122@cactus.org> galew_a@cactus.org (Andy Galewsky) writes:
- >
- >Hi,
- > We have a system that is built on FTP software's PCTCP development kit
- >that uses UDP. Our problem is that we need to send packets larger than
- >the (apparent) 1400 byte limit for UDP packets under FTP's implementation.
- >So I have a couple of questions:
- > * Does anyone know of a way to up this limit (FTP tech support says no)
- > * Does anyone know of a library similar to FTP's that would permit us
- > to have larger UDP packets?
- > * Could we use some other network call to get packets that can be larger
- > than this ?
- >
- > Thanks ever so much
- > The Galewsky Brothers
- > dan@crs.com
-
- FTP's PCTCP is unable to IP fragment packets bigger than the network
- mss (~1400 over ethernet). Beame & Whiteside Software Ltd. TCP-IP contains
- an small PCTCP emulator which allows programs written for FTP's software
- library to run over BW-TCP/IP. Since BW-TCP supports fragmentation up to
- ~16K, your program MIGHT run without modification over our TCP and use large
- UDP packets.
-
- Alternativly, socket libraries are available from most major TCP/IP suppliers.
- Just ask the vendor if their TCP/IP supports incoming AND outgoing "large"
- IP packets.
-
- Carl Beame
- Beame & Whiteside Softwar Ltd.
- sales@bws.com
-
-