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- Newsgroups: comp.protocols.tcp-ip
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- From: philc@msmgate.mrg.uswest.com (Phil Corchary)
- Subject: ip segment size negotiation NEED HELP!
- Message-ID: <1992Sep4.160201.22932@uswmrg.mrg.uswest.com>
- XUserAgent: Nuntius v1.1
- Organization: U S WEST MRG, Inc.
- NntpPostingHost: phil_corchary_mac.mrg.uswest.com
- Date: 04 Sep 92 20:02:01 GMT
- Lines: 60
-
- HELP!!
-
- Not being a tcp/ip guru or even expert, I am running into a problem that
- I
- can't resolve.
-
- the situation: transfering data over a private wire EtherNet (no routing,
- two David 10bT hubs, fully certified) between Mac IIci (8/80 Asante
- Ethernet adapter using Apple drivers in System 7.0.1 with TuneUp 1.1.1
- and MacTCP 1.1) and Tandem RISC based minimain.
-
- problem: as reported by a sniffer on the line: the segment size coming
- down from the Tandem is 1500 ... going up from the Mac to the Tandem
- the segment size is being negotiated down to 590 ... WHY?? Is MacTCP
- doing this?? I was reading (Comer's Internetworking with TCP/IP)
- that it is a SUGGESTED spec, not a requiredpart of the spec for
- this to happen.
-
- Has anyone seen this ... or can anyone help. We are attempting to
- benchmark
- for max throughput, and this problem is severly impacting this test ...
-
- ANY HELP APPRECIATED ... please MAIL replies ...
-
- philc
-
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