nanog mailing list archives

Re: PC Bozo's World bites again (CNN, too)


From: Matthew Marlowe <mmarlowe () methodfive com>
Date: Wed, 27 May 1998 20:00:06 -0400

This is hardly an operational issue.  

That said, I think CNN messed up their explanation rather
than giving wrong advice.

Some of the original RFCs for SLIP and PPP, as well as
Stevens in TCP/IP Illustrated Volume I, pointed out
that lower mtu's on dialup lines could significantly
improve latency for interactive traffic while having
only a small efficiency loss for data intensive traffic.

The key was that you didn't want small high-priority packets
to be waiting in a queue while larger full-size mtu packets
were being sent.

Matt

Vadim Antonov wrote:

Check http://cnn.com/TECH/computing/9805/26/net.access.idg/index.html

Those bozos are suggesting to reduce MTU from 1500 to 576
to "improve performance", so packets "won't fragment in
backbones"!  The bright idea to fix CTS/RTS setting didn't
come along in their brilliant minds.

Here goes the average packet size.  Down the drain...

Now what do we do to control the damage?

I also think it's a good time to measure the gullibilty of
the general public by measuring packet size distribution :)

--vadim


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