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From: backman@FTP.COM (Larry Backman)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Re: packet drivers losing packets or getting confused?
Message-ID: <9104122308.AA10889@ftp.com>
Date: 12 Apr 91 23:08:38 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 28


 >> 
 >> I missed this followup somehow.  Ah well.
 >> 
 >> "Heavy traffic" could be loosely defined as a substantial increase in
 >> the number of packets being seen by either of my two monitors (Netwatch
 >> or the Beholder).  Both deal quite nicely with TCP/IP packets, it
 >> appears, but when I start up the NFS-based traffic (UDP/IP) it saturates
 >> (at least in comparison to the TCP traffic I was running) the wire and
 >> the monitors stop reporting traffic information.  I don't really think
 >> its a matter of UDP vs. TCP, though.  Something about the packet drivers
 >> is not working (judgement call; I can't prove that yet).
 >>

How many consecutive packets are you seeing?  How big is your NFS Read/Write
size.  I'm willing to bet that your doing 8K read's/writes and the multiple
consecutive IP fragments are blwoing away your WD card.

If so; cut your NFS read/write size down to 2K and see if your problems
go away.  I've seen 3c503's behave the same way under NFS.






					Larry Backman
					backman@ftp.com