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- From: mckenzie@bbn.com (Alex McKenzie)
- Newsgroups: comp.protocols.tcp-ip,comp.protocols.misc,comp.protocols.iso
- Subject: Re: Why sequence number on bytes instead of packets?
- Message-ID: <lb14cvINNc16@news.bbn.com>
- Date: 11 Sep 92 12:31:27 GMT
- References: <STEINAR.HAUG.92Sep10201931@delab.sintef.no>
- Reply-To: mckenzie@labs-n.bbn.com (Alex McKenzie)
- Organization: Bolt Beranek and Newman Inc., Cambridge MA
- Lines: 15
- NNTP-Posting-Host: bbn.com
-
- There is no need to sequence number any unit smaller than the smallest
- individual unit which can be a fragment boundary. Other transport
- protocols have been designed and implemented which attach sequence
- numbers to units larger than a byte (eg 256 bytes) and allow
- fragmentation only in terms of these units. The unit you pick is one of
- the parameters which is involved in determining the Minimum Packet Size
- which MUST be accepted by EVERY (packet) network through which packets
- of your protocol will travel. The byte was picked for TCP/IP in order
- to be as all-inclusive as possible.
-
- __
- / | /\ Alex McKenzie
- / | \/ mckenzie@bbn.com
- \__/|_/\_&_/~X_ 617/873-2962
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-