[aprssig] The new N-N paradigm summary (fwd)

Phillip B. Pacier ad6nh at arrl.net
Wed Jan 5 15:13:55 EST 2005


Greg Noneman wrote:

> Greg, how do you account for the packet traffic in areas that have 
> dropped WIDEn-N going down significantly?  Sure, you're not going to 
> get everyone to get on any same page, but there are two truths that 
> must be addressed:
>
> I am not surprised that this has happened.  If you make sudden changes 
> at the digipeaters without giving users time to react, you will see a 
> lot of users not getting digipeated.  What I would expect to see, is a 
> gradual increase  after the initial transient.  Whether it returns to 
> the original levels or not depends on the particular situation.  In 
> some cases it could remain less, but on the other hand, I could also 
> see things getting worse, due to the problem I mentioned due to 
> duplicate packets being generated with RELAY and WIDE  vs. WIDEn-N.

Possible.  I see it rebounding a bit but nowhere near where it was (in 
the areas that have made the change).

>>
>> RELAY MUST be supported for mobiles.  There is no reason why a mobile 
>> should have to change their path when they go from metro to rural to 
>> the next metro.
>
>
> I understand the desire for having common national path.  Believe me, 
> this was considered when RELAY was dropped from high-level digis in 
> favor of WIDEn-N only.  It was a compromise that was made.  But the 
> hope was that the extensive network of home stations using an alias of 
> RELAY would accommodate those stations with RELAY as a first hop.

That would be great!  I believe that is how the network was intended to 
work - low level RELAYs and high level WIDEs.  However, it has not 
caught on after five years.

>>
>> Second, it is precisely the WIDEn-N that is bringing in packets from 
>> Colorado, Utah, etc. into southern California via the high-level 
>> digipeaters.  K6TVI-1 has made the switch and dropped WIDEn-N, and 
>> since that has happened I have not seen the 500 mile packets.
>
>
> I agree that WIDEn-N was bringing in these stations.  But, is one 
> packet an hour  from a handful of DX stations really going to kill the 
> local network.  Also, if everyone suddenly got rid of WIDEn-N, what do 
> you think these DX digis would do to their paths?  Back to long WIDE 
> paths, like was the case before?  And with this, the packets get 
> REALLY long and can chew up a lot of bandwidth.

Why do you automatically assume that all the digi operators are going to 
switch to long paths again?  I'd be willing to bet the opposite happens 
- where most digi operators wont even know there has been a change and 
their beacons are going relatively nowhere.  In that case, they really 
have no business operating digipeaters if they're not going to check 
their setups from time to time.

Thanks for the dialogue!

73
Phil - AD6NH

>





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