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Article #1773

Sun gateway delay

#1773
From: Stephan Allemon
Date: Thu, 05 Oct 1989 17:23
40 lines
1528 bytes
We are using a SUN 4 running SUNOS 4.0.1. as a gateway between subnet and
the backbone.

Lately we noticed a very strange behaviour.

This is the configuration :

	SUN3/50		SUN386i		SUN4	SUN4	SUN4
	A		M1		B	M2	C
	|		|		| |	|	|
	--------------------------------- ---------------

		Subnet				Backbone

A has some files mounted from C. On A we start a global "find" command on
the file-system mounted from C.

B is serving as a gateway.

On M1 and M2 we started etherfind with time-stamping.

In the first minute there is almost no delay between the packets generated
by A on the subnet and the packets generated by B o the back-bone.

After a certain time a delay is seen between the corresponding packets,
this delay increases until 5 seconds even.

It gives the impression that the gateway B needs 5 seconds between
accepting a packet from the subnet and sending it through to the
backbone-net.

Has anyone else already seen this ? Are we measuring in the wrong way or
is there really a problem ?

Please reply to :

	prlb2!sunbim!bbl!lmr
or	sa@sunbim.be

Thank you !
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Message-ID: <1991@brazos.Rice.edu>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mit-eddie!uw-beaver!rice!sun-spots-request

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mit-eddie!uw-beaver!rice!sun-spots-request
From: sa@sunbim.be (Stephan Allemon)
Newsgroups: comp.sys.sun
Subject: Sun gateway delay
Keywords: Networks
Message-ID: <1991@brazos.Rice.edu>
Date: 5 Oct 89 17:23:35 GMT
Sender: root@rice.edu
Organization: Sun-Spots
Lines: 40
Approved: Sun-Spots@rice.edu
X-Sun-Spots-Digest: Volume 8, Issue 155, message 6 of 7