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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!hpscit.sc.hp.com!scd.hp.com!hpscdm!cupnews0.cup.hp.com!raj
- From: raj@cup.hp.com (Rick Jones)
- Subject: Re: Broadcasting, UDP info
- Sender: news@cupnews0.cup.hp.com
- Message-ID: <By6K22.8Lp@cup.hp.com>
- Date: Mon, 23 Nov 1992 17:46:50 GMT
- Distribution: usa
- References: <FKITTRED.92Nov22200832@spchp13.BBN.COM>
- Organization: Hewlett-Packard
- X-Newsreader: TIN [version 1.1.4 PL6]
- Lines: 21
-
- All the reasons for handling lost, mutilated, folded, or duplicated
- packets do apply. There is a little more however ;-)
-
- You might wish to examine the output of the "lanconfig" command. It
- will tell you what sort of encapsulation methods are enable for the
- specified interface. HP 9000 systems can be configured to use two
- separate encapsulations - the first is good ole Ethernet
- encapsulation. The other is called "IEEE" and is the method used for
- TCP/IP communications before the SNAP RFC.
-
- Let's assume that both encapsulations are enabled. When a broadcast
- packet "comes down the stack" there is no way to know if you are
- trying to broadcast to an Ethernet or an "IEEE" host. So, the driver
- will send the packet using both encapsulations.
-
- If you go and disable one of the encapsulations, you should see a
- reduction in the number of duplicates you see.
-
- rick jones
- these opinions, such as they are, are mine, all mine !-)
- Hewlett-Packard probably wouldn't want them anyway ;-)
-