Re: ICMP ping effecting network flow?

On Mon, 19 Jun 2006, in the Usenet newsgroup comp.os.linux.networking, in
article <e76n0g$i3b$1@xxxxxxxxxxxxxxxxxx>, Roy L Butler wrote:

Thanks for all of the good info. My specific source stating routers may
be configured to treat ICMP echoes as high-priority packets is section
6.5 of _Wide-Area Data Network Performance Engineering_, by Cole &
Ramaswamy (AT&T engineers), written in 2000. They do mention that the
opposite (lower-priority) is common and I can understand how the whole
thing seems even less plausible on a packet-switching architecture...

That's certainly possible, but I don't see it being used to treat all
packets to/from the host that pinged with higher (or lower) priority.
This is basically saying that all routers along the way would have to
allocate some memory to remember which host has sourced or replied to
a ping in the last second or so. Probably not a big deal for a stub
router in a home situation, but likely to play merry he!! on a
backbone router connecting a couple of OC-3s (155 Megabit fiber) or
wider.

I'll give up the position of devil's advocate. :)

Sounds good.

Old guy
.

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