From: Richard Dumoulin (Richard.Dumoulin@vanco.fr)
Date: Thu Jun 08 2006 - 16:46:45 ART
James, by your logic I can just ping B and I will be sure that my latency
won't be greater than that number. Don't you agree?
-- Richard
-----Message d'origine-----
De : James Ventre [mailto:messageboard@ventrefamily.com]
Envoyi : Thursday, June 08, 2006 8:44 PM
@ : Richard Dumoulin
Cc : 'Chris Broadway'; Cisco certification
Objet : Re: RE : RE : RE : RE : Traceroute
I'm going to assume that you are not the ISP here.
Suppose you have 3 segments, and 3 routers. [YOU ARE HERE] - A - B - C.
If you want to to figure out the latency between A and B ... you can ping C.
What you will get is extra latency induced from going from B to C and the
associated process level overhead @ router C, but you know that your latency
is no greater than that number. To make sure that don't send 5 pings at the
wrong time (while it's getting polled), send a bunch and take an average.
Yes, I know it sucks, but when you're dealing with punted/process level
packets, it's never easy (especially when you don't own the gear)
James
Richard Dumoulin wrote:
You have 2 sites in the Internet and would like to reduce the latency
between them. So as a first step you discover the path with a traceroute and
measure the RTT with PING to identify the segment where the packets spend
most of their time
-- Richard
-----Message d'origine-----
De : James Ventre [mailto:messageboard@ventrefamily.com
<mailto:messageboard@ventrefamily.com> ]
Envoyi : Thursday, June 08, 2006 8:21 PM
@ : Richard Dumoulin
Cc : 'Chris Broadway'; Cisco certification
Objet : Re: RE : RE : RE : Traceroute
If you don't own (and have access to) all of the infrastructure inbetween,
your options are pretty limited.
What is the real goal?
James
Richard Dumoulin wrote:
So what are the valid options then?
-- Richard
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