[aprssig] Definitive digipeater specification?

Mon Feb 27 22:59:54 UTC 2006

X it is.  You might want to also add the "A" to your description list as 
well, as that is where I got my information initially.  Thanks.

73
Phil - AD6NH

Robert Bruninga wrote:

>>>>ad6nh at arrl.net 02/27/06 5:24 PM >>>
>>>>        
>>>>
>>A few of us are experimenting with AX.25 digipeating, 
>>using NSR...   we are proposing to use the "A" 
>>overlay on these digis 
>>    
>>
>
>Actually, we are using the "A" overlay
>for all ALT-INPUT digis that had the +600
>alternate input on 144.99.  Maybe you could use
>the X overlay for aX25?
>
>And you know I am opposed to NSR routing unless
>it allows DIGI1,DIGI2,DIGIn... routing.
>Remember, the 3 hop path above gets a packet
>from point A to the desired Point B with only
>3 copies  And is the most efficient on-freq
>method possible.  This is FAR LESS load on the network
>than even a WIDE2-2 packet which can generate
>16 copies in some areas.  
>
>There just is no on-freq digipeating method more efficient 
>for getting a packet from A to B then the directed
>path.  Unless you go to tunneling, gateways, backbones
>and level 4 and of course, then it is not "digipeating" and
>therefore not part of the argument.
>
>My position is that only the ORIGINATOR of a packet 
>knows  where HE needs to communicate at any particular
>instance.  NSR is an attempt to give SYSOPS total
>control and force all users into a one-size fits
>all definition of what APRS and the users are (tracking
>for example)... And that just kills the flexibility of the 
>system to respond to what a USER may need at any
>given instant.
>
>In otherwords, NSR is a solution for the flooding
>problem we used to have but so is New-N, and
>New-N has significanly solved that problem everywhere
>it is used.  But New-N does not prohibit the very efficient 
>point-to-point intellligent  use of the network when needed.
>And New-N does not need re-configuration and detailed
>SYSOP management at all digis each time a new digi 
>comes or goes.
>
>Good luck.... keep me posted on what you
>learn and anything that we can learn from the
>experiment.
>
>Bob, WB4APR
>
>
>Robert Bruninga wrote:
>
>  
>
>>Scott,
>>use my New-N Paradigm as the "official" digipeating
>>guide for APRS these days.  
>>http://www.ew.usna.edu/~bruninga/aprs/fix14439.html 
>>
>>Bob, WB4APR
>>
>> 
>>
>>    
>>
>>>>>scott at opentrac.org 02/27/06 4:17 PM >>>
>>>>>       
>>>>>
>>>>>          
>>>>>
>>Is there any 'official' explanation of exactly how a modern APRS digipeater is supposed to function?  The AX.25 spec just covers the conventional digipeating.  I think I have a pretty good handle on it, but I know there's been some inconsistency out there.  Just want to make sure I'm working from the best source material available.
>>
>>A flow chart or state diagram would be great...
>>
>>Scott
>>N1VG
>>
>>
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>>
>> 
>>
>>    
>>
>
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