Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!JVNCA.CSC.ORG!heker
From: heker@JVNCA.CSC.ORG (Sergio Heker)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: trace route to OZ
Message-ID: <8907241234.AA03375@jvnca.csc.org>
Date: 24 Jul 89 12:34:33 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 46

Jon,

The link between JvNC and JANET is provided by *one* cisco router in our
end, connected through a 56kbps link to an x.25 switch in London.  The
"nsfnet-relay" gateway is a SUN connected to the x.25 switching system.
The *very* high delay seems to be mostly due to the x.25 switch (the
satellite delay only accounts to approximately 500 msec).  In the case
of our link to NORDUnet, which is also satellite, we use a cisco router
at each end and we get a delay of approximately 600msec (average).  There
are discussions to add a cisco router at the JANET end in order to reduce
the delay.  

I ran ping to 128.86.8.6 and to 128.86.8.1.  The first address is the address
of the "nsfnet-relay" in England, while the second one is the address of 
the cisco router at JvNC.  Note below the round trip delays and packets
lost for each.

Mon Jul 24 08:23:03 EDT 1989
PING 128.86.8.6: 10 data bytes
----128.86.8.6 PING Statistics----
100 packets transmitted, 96 packets received, 4% packet loss
round-trip (ms)  min/avg/max = 7560/11579/16280


Mon Jul 24 08:23:14 EDT 1989
PING 128.86.8.1: 10 data bytes
----128.86.8.1 PING Statistics----
100 packets transmitted, 100 packets received, 0% packet loss
round-trip (ms)  min/avg/max = 10/46/1750

The routing and delay to the 128.86 network (our side of the point to 
point link) is reasonably good.  While the other side of the point to
point link, is extremly slow and there are some packets lost.

We have two Technical Reports (TRs) describing the connection between JvNC
and JANET and between JvNC and NORDUnet.  These two TRs are, at this point
drafts and are being "certified".  For more information on either of these
international links, please send mail to "nisc@nisc.jvnc.net".

					-- Sergio
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|		John von Neumann National Supercomputer Center		    |
|  Sergio Heker				tel:	(609) 520-2000		    |
|  Director for Networking		fax:	(609) 520-1089		    |
|  Internet: "heker@jvnca.csc.org"	Bitnet:	"heker@jvnc"		    |
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