[Dxspider-support] High data load

Dirk Koopman djk at tobit.co.uk
Wed Oct 26 23:27:29 BST 2005


On Wed, 2005-10-26 at 19:05 +0000, Peter wrote:
> Hi
> 
> >From time to time I have a problem with data thats repeated every time, very fast. A
> sample from data/debug is below.
> This behavior cause a high load on the system. All I see is a strange ~ at the end of each
> line.
> Sometimes its for a few minutes en somtestimes it takes 2 hours and creates a big debug
> files
> 
> Is there a reason or solution to solve this?
> Running it on a linux system (debian) with the latest CVS (59.385)
> Have a look the mrtg data at http://www.pi4cc.nl/dxcluster/mrtg/msg.html
> 
> 73 Peter
> PC2A
> 
> 1130345131^<- I PI1OSS-8 PC28^YV6BTF-7^KP4IG-5^DX^FG1JD^25-Oct-2005^1105Z^0^DX 3W3RR^
> ^5^0^ ^ED7ZAB-5^~
> 1130345131^-> D HB9OK-9 PC28^YV6BTF-7^KP4IG-5^DX^FG1JD^25-Oct-2005^1105Z^0^DX 3W3RR^ ^5^0^
> ^ED7ZAB-5^~
> 1130345131^<- I PI1OSS-8 PC28^YV6BTF-7^KP4IG-5^DX^FG1JD^25-Oct-2005^1105Z^0^DX 3W3RR^
> ^5^0^ ^ED7ZAB-5^~

Ho Hum...

<tin hat>

I am afraid that you have a bad case of loopy CLX mail protocolitis.
This is a nasty disease that is very hard to cure reliably. 

Essentially KP4IG-5 seems to think that there is a route thru you /
hb9ok-9 to YVBTF-7 and is trying to send the mail directly. This *not*
how it is supposed to work except from special circumstances.
Unfortunately CLX tries the 'special circumstances' route and doesn't do
it the normal way (which is store and forward the message along to the
next hop on the route and let that deal with it). CLX tries to send it
direct. And it has got into a loop doing it because there is no hop
protection and there is a loop. 

Protocol error basically.

</tin hat>

What you need to do reduce the number of routes that you have available
and thus advertise. What build are you using?

Dirk




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