Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!watmath!clyde!cbatt!ucbvax!CC7.BBN.COM!ahill
From: ahill@CC7.BBN.COM.UUCP
Newsgroups: mod.protocols.tcp-ip
Subject: (none)
Message-ID: <8702051740.AA10671@ucbvax.Berkeley.EDU>
Date: Thu, 5-Feb-87 11:40:50 EST
Article-I.D.: ucbvax.8702051740.AA10671
Posted: Thu Feb  5 11:40:50 1987
Date-Received: Sat, 7-Feb-87 12:47:27 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 38
Approved: tcp-ip@sri-nic.arpa


	In the past few days BBNCC has recorded numerous instances
of non-BBN supported gateways attempting to communicate with a non-
existent host.  The subnet only provides us with reports of attempts
which were delayed by temporary resources shortages within the ARPANET.
BBN believes that all connection attempts would return a destination
host dead (1822 type 6 subtype 9).  These attempts are being made
to address 10.3.0.52 which is currently unoccupied but used to
be USC-ISIB.  BBN estimates that there are between 200,000 and 2,000,000
attempts per 24 hour period.  BBN is not able to determine the
nature of the attempts or the originating source(s) since the origin
is behind gateways.  The following is a list of the host/gateways that
originated or forwarded traffic destined for 10.3.0.52.  Any information
on what is causing this traffic would be appreciated.  It is a likely
candidate for contributing to ARPANET congestion.

	CSNET	7/82
	RELAY 	4/5
	MITGW	0/77
	UCBAR	0/78
	UCBVX	2/78
	TUCC	6/96
	CMUD	2/14
	CORNL	3/96
	BBNMG	5/5
	TRIV	0/25
	LBMGW	0/68
	HARV	0/9
	ASC	1/37
	CUGAR	3/89
	AIGW	3/6
	SUN	7/2
	TEXAS	0/62
	UPENN	4/96
	ROCH	0/15

THE TABLE IS ORDERED BY FREQUENCY OF REPORTS.  THE TOP FOUR ARE TWO TO
FOUR TIMES HIGHER THAN THE REST.