From: Howard C. Berkowitz (hcb@xxxxxxxxxxxx)
Date: Thu Mar 28 2002 - 01:32:15 GMT-3
>Hi Matthew,
>
>Per Perlman "Interconnections, 2nd Ed." p 306 - "Poison reverse means
>reporting a value of infinity to explicitly report that you can't reach D
>rather than simply not mentioning D." So, instead of not acknowledging
>something, the issue in question is acknowledged, but with an answer that is
>not valid, thus 'spoiling' the output.
>
>Is this what you are asking or are you asking why was 'poison' chosen
>instead of words such as 'corrupt' or 'defile'?
>
>Sean
>----- Original Message -----
>From: "Ma Gang" <matthen@zisco.com.cn>
>To: <ccielab@groupstudy.com>
>Sent: Wednesday, March 27, 2002 7:01 PM
>Subject: Off topic, What does "Poison" mean here?
>
>
>Dear All,
>
>We may be familiar with "Route Poisoning" or "Poison Reverse". But what does
>"poison" mean here? As I imagine, there may be 2 answers
>
>1. The name of a French mathematician. He invented the algorithm, which is
>used in Distance Vector routing protocol now.
Are you thinking of Poisson?
The distance vector algorithm is usually associated with Bellman & Ford.
>
>2. Another expression way of "block".
3. Something that is fatal for the route.
>
>Which one is correct? Or maybe some other answers?
>
>
>Matthew Ma
-- "What Problem are you trying to solve?" ***send Cisco questions to the list, so all can benefit -- not directly to me*** ******************************************************************************* * Howard C. Berkowitz hcb@gettcomm.com Chief Technology Officer, GettLab/Gett Communications http://www.gettlabs.com Technical Director, CertificationZone.com http://www.certificationzone.com "retired" Certified Cisco Systems Instructor (CID) #93005
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