[Dxspider-support] Repeating Announcements - Can anything be done?

[Lee Sawkins]

Hi Dirk

How about this:

a) Ignore incoming PC12 messages where the originating node is PC9x.  There 
are about 270 of these nodes.
b) Ignore incoming PC12 with a hops count of less than say H85

This assumes all PC9x nodes can receive PC93 announcements from at least one 
link.  I think this is true, and if not, could be fixed.  It also assumes 
that all nodes are no more than 15 hops from each other.  I think this is 
true.  I put in some code to check this.  I have run my VE7CC-1 cluster for 
24 hours and the lowest PC9x hop was H87.  For a long time it was H90, but 
then I think some messages took a longer route due to slow links.  So no 
PC9x node is more than probably 10 hops from me.  I have a couple of AR 
Cluster nodes directly connected to me so any AR Cluster can not be very 
many hops away.  So 15 hops should be more than enough for any route.

Using this scheme, all of the duplicate shown by 4Z5LZ would have been 
dropped because N5IN-2 is a PC9x node.  Even if N5IN-2 was not a PC9x node, 
most of the others would have been removed since they have hop values less 
than 85.  Not the first few, but the remaining ones.
http://www.cqplanet.com/spam_announcements_4z5lz-2.txt

FWIW I believe most if not all of these delayed announcements are not caused 
by DXSpider or by CC Cluster software.

Lee

----- Original Message ----- 
From: "Dirk Koopman G1TLH" <gb7tlh at dxcluster.org>
To: "The DXSpider Support list" <dxspider-support at dxcluster.org>
Sent: Friday, October 22, 2010 6:37 AM
Subject: Re: [Dxspider-support] Repeating Announcements - Can anything be 
done?


> On 21/10/10 22:40, Lee Sawkins wrote:
>> Dirk
>> Your PC93 protocol eliminates announce dupes. Would it not be possible
>> to stop using the PC12 protocol?
>
> I don't use PC12 as such. I think what you are saying is: don't pass on 
> PC12.
>
> The problem is that there are ~130 AR Cluster boxes out there which use 
> PC12 (there are a few other makes of software, but are relatively small in 
> number). Also there are some legacy DXSpider nodes and so I downgrade PC93 
> to PC12 for them.
>
> The alternatives would seem be to:
>
> a) ignore incoming PC12 completely.
> b) ignore PC12 from DXSpider nodes only.
> c) both ignore PC12 and not downgrade PC93.
>
> As to the problem that started this thread, it is an FAQ and the solution 
> is:
>
> rm /spider/data/dupefile
> restart the node
>
> Dirk
>
>
> _______________________________________________
> Dxspider-support mailing list
> Dxspider-support at dxcluster.org
> http://mailman.tobit.co.uk/mailman/listinfo/dxspider-support