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[aprssig] Re: The Ultimate New WIDEn-N Paradigm

Wes Johnston aprs at kd4rdb.com
Mon Feb 7 18:42:00 UTC 2005


Quoting Robert Bruninga <bruninga at usna.edu>:

> ULTIMATE New n-N Paradigm:
> Paradigm.  It cuts off WIDEn-N completely but inserts
> WIDE2-2, WIDE2-1, WIDE3-3, WIDE3-2 explicitly as local

If we use UIDIGI set to WIDE2-2,WIDE2-1,WIDE3-2,WIDE3-1 , we've used up all four
slots.  Fine, but what about support for RELAY?  The hierarchy has always been
that low stations respond to one alias (relay) and higher stations respond to
the lower aliases and additional aliases.  Do we run RELAY as MYALIAS?  We'll
run into dupe problems, but it'll work...

I just read http://www.ew.usna.edu/~bruninga/aprs/kpc3+WIDEnCUT.txt and it shows
UIDIGI ON RELAY,WIDE2-2,WIDE2-1,WIDE3-3 , so looks like you forfeited WIDE3-2 in
lieu of RELAY.

> Also, the ID <==> NOID has gone away.  In fact, if SSn-N
> is used as the new UIFLOOD parameter, then ID should
> be enabled!  This is because, since WIDEn-N will now be
> fully traced, we will always get the point of entry digi.
> Also, since the old method of forcing the first digi to ID
> with the path of WIDE,WIDEn-N generated extra dupes,
> we dont want to encourage that any more.  Therefore
> UIFLOOD SS,30,ID will support the very effiicient path
> of SSn-N and so we may as well let the LAST digipeater
> ID itself...

I'm glad NOID will go away... I've wanted to develop some sort of intelligent
routing scheme, but without the digi's not knowing their neighbors, it was
impossible.  One of the problems with TheNET routing was the tables getting
transmitted every 10 minutes got in the way of traffic.  If we can trace each
packet, the digipeaters can passively learn their neighbors w/o any additional
network load.  And, yes I recongnize that some RF links are asymetric.

Wes




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