From: Joseph Ezerski (jezerski@xxxxxxxxxxxx)
Date: Thu May 02 2002 - 16:49:06 GMT-3
Just an interesting tidbit and extension of the six degrees of separation,
but TTCP was written by Mike Muuss (who wrote PING) and Terry Slattery (the
first CCIE outside of Cisco). Terry founded Chesapeake Computer Consultants
who later became Mentortech, which was where Bruce Caslow worked and who
helped many of us achieve our CCIEs. Paul Borghese, of this list, wrote the
"Configuring IP Access-Lists" Chapter 24 of Bruce's book.
-Joe
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Hansang Bae
Sent: Tuesday, April 30, 2002 7:52 PM
To: 'ccielab@groupstudy.com'
Subject: Re: OT:TTCP availability
At 01:52 PM 4/30/2002 -0500, MADMAN wrote:
> TTCP is not avaialable on all platforms and of handy dandy feature
>navigator doesn't know what it is! I checked one of the 3660's in the
>lab, it is running 12.2.8T IP plus:
TTCP certainly works with 3600s. But it requires Enterprise IOS. I'm not
sure if PLUS supports it.
Chuck,
See: http://www.cisco.com/warp/public/471/ttcp.html for the correct syntax.
Note that you can download PC/Unix based clients as well (the above URL has
a link for it). While TTCP is a bit dated, it's a good quick&dirty test
mechanism.
Also, if your BANDWIDTH*DELAY is 10^^6 (so for your T3, 25 ms or so will
result in 10^^6 BW*DELAY product) you CANNOT fill the pipe with host-to-host
TCP traffic.
Down load the PC/Unix client and try it with UDP. Since there are no
concepts of windowing for UDP, you will most likely get a bump in
throughput.
All of this assumes you have the proper working CSU etc. (clocking,
framing, etc.)
Does your T3 links have 25+ms round-trip delays?
I'll see if I can sanitize my post-mortem so that I can send it to you (if
you want it)
hsb
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