Let's cut the flame! I think I was the one mentioning the 125 ms at a
recent NASA Workshop. Let me explain:
The 125 ms was not quoted to show that TCP as a protocol does not work
over GEOs, I know better than this. 125 ms is the number that is quoted
by the Automotive Network Exchange as a Service Level Agreement for
certifying their service providers, it is a Quality of Service issue.
Other providers (AT&T, UUNET etc.) also have 100-150 ms latency
agreements. It is not LEO propaganda, it is a terrestrial network issue.
Marie-Jose
-----Original Message-----
From: osama qadan [SMTP:[email protected]]
Sent: Tuesday, June 16, 1998 9:42 AM
To: [email protected]; [email protected];
[email protected]
Subject: re: Re IP over Satellite
This is a false propaganda against GEO's. It has been
demonstrated over and
over again that TCP/IP works over satellite without any kind of
problems
which can't be fixed by tunning the protocol parameters. Even
without such
adjustments, the performance is good enough to deny such false
accusations.
Actually last year, we have demonstrated here in INTELSAT during
the
Internet summit held here that TCP/IP works over satellite, and
we have
drafted several documents supporting that.
If anyone has anything againt GEO's, then they should present
their case
scietifically, rather than "gossiping" about it (!!!)
-----------
Osama Qadan,Engineer
Internet Services Over Satellite Group
International Satellites Organization (INTELSAT)
Tel: (202) 944-7328 // Fax: (202) 944-7644
Internet: [email protected]
-------------
Original Text
From BORDER@SMTPGATE (John Border) {[email protected]}, on 6/16/98
12:14 PM:
To: TCPPEP@SMTPGATE {[email protected]}, TCP-OVER@SMTPGATE
{[email protected]}
This is really sketchy. I am basically fishing here. I
didn't find
anything at the IETF web site...
My management has heard (nth-hand) that there is some kind
of statement
or
draft associated with the IETF that says that either IP or TCP
will not work
over satellite links with delays longer than 125 milliseconds.
Has anyone
heard of this or is aware of where this may have come from? It
sounds like
propaganda from LEO proponents but if there is any technical
merit behind
such
an assertion I definately want to see it...
John Border
Hughes Network Systems
[email protected]
This archive was generated by hypermail 2b29 : Mon Feb 14 2000 - 16:14:43 EST