Subj : Tiers
To   : Ross Cassell
From : Frank Vest
Date : Fri Jul 13 2001 04:14 pm

On (13 Jul 01) Ross Cassell wrote to Frank Vest...

Hello Ross,


 FV> If it's by the number of Nodes connecting to them, it would seem that
 FV> there are many Top Level Hubs in Z1. If it's because they are all
 FV> linked direct to each other, then all are Top Level since all of
 FV> Fidonet is linked together in some way.

 RC> For purposes of this discussion, those in the toplevel are meshed with
 RC> all the echoes. The NAB has 5 in this arrangement, The Z1B has 3.

 RC> This message I am writing you will get sent to each of the other four
 RC> NAB hubs I am meshed with in addition to my own links. They wont
 RC> distribute the message amongst each other because of the seenbys. A
 RC> mesh topology allows for fast message propogation in addition to
 RC> redundancy.

This is what I think I remember as the old triangle of Hubs that all
connect to one another with seenbys preventing dupes. That allows for
some sort of sharing and surety that if a message comes into one
system it will got out to all and if it has already come to one
system, it won't be duped to others.

This will, and does work fine unless someone adds seenbys into a
message to prevent distribution. Not accusing anyone of anything here,
just an observation.

Ah well... I see a war developing here on this subject... I'd better
shut up. :-))

Thanks,

 Frank

http://texoma.net/~flv
http://bise.tzo.com/r19

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