Path: utzoo!utgpu!watserv1!watmath!att!linac!pacific.mps.ohio-state.edu!zaphod.mps.ohio-state.edu!wuarchive!uunet!mcsun!hp4nl!nikhefh!a20
From: a20@nikhefh.nikhef.nl (Marten Terpstra)
Newsgroups: comp.protocols.tcp-ip
Subject: ICMP source quench
Keywords: icmp cisco busy interface ?
Message-ID: <1155@nikhefh.nikhef.nl>
Date: 22 Feb 91 09:55:09 GMT
Sender: terpstra@nikhef.nl (Marten Terpstra)
Organization: Nikhef-H, Amsterdam (the Netherlands).
Lines: 20

Hi all,

Can anyone tell me what causes an ICMP source quench message to be sent ?
As far as I can tell this message has something to do with the load on an
interface and tells a host to slow down the sending of packets. I notice a
lot of these messages on my cisco with a heavily loaded serial interface
(mostly 70-80% of the 64 Kbit/s).

What do hosts that recieve this messages do with it ? Can it cause an ICMP
Network is down ? Does it in any way have an effect on outstanding TCP
connections ?

Thanks for any hints,

Marten
--
Marten Terpstra                                  National Institute for Nuclear
Internet : terpstra@nikhef.nl 		                and High Energy Physics
Oldie-net: {....}mcsun!nikhefh!terpstra	      (NIKHEF-H), PO Box 41882, 1009 DB
Phone    : +31 20 592 5102                           Amsterdam, The Netherlands


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