[Uk-dxcluster] Network loops again

[uk-dxcluster at dxcluster.org]

Interesting stuff these loops.
I would have thought a simple filter would stop the problems, on any non-UK 
links just add a filter to stop UK node info being received.
A few months back I tried to contact WB0YRQ-7 as this node still runs an 
old version of spider and it had an uptime of over 60days. Maybe this is 
still not helping as it currently has a very out of date node table, an up 
time of 130 days and is connected to IZ5FSA-6.

WB0YRQ-7: 434 nodes, 0 local / 2724 total users  Max users 3513  Uptime 130 
02:25



Darren G0TSM/GB7EDX


At 21:06 18/02/2005, you wrote:
>Hi folks, all of a sudden we seem to be suffering from looped network
>connectivity that, as usual, is playing havoc with GB7DXC and its users.
>
>Under normal conditions GB7DXC connects solely to GB7BAA and is at the
>end of a branch of the network; this means that all the other UK nodes should
>see us as being connected to 'BAA.  However....
>
>Since last night 'DXC has shown as being connected into the UK network via
>various nodes other than 'BAA; for example at the moment GB7DJK shows
>us as coming in through IZ5FSA-6; GB7IMK shows us as connected via
>GB7DXA; GB7DXA shows connections via 'DJK and PA6NL-1; GB7NHR
>shows a connection via GB7MBC; and GB7MBC shows connections via
>GB7NHR and GB7BAA.
>
>The cause of such looped connections has in the past usually been someone
>putting on a new link to an out-of-UK node; this propagates the UK node
>tables into Europe (and beyond) and then back into the UK via another route
>with the result that UK nodes don't know what's connected to where!
>
>We would appreciate it greatly if you could have a look at your connections,
>especially those that go outside the UK, and check that unnecessary node
>table information isn't being propagated more widely than is absolutely
>necessary.  At one time there was a 'gentleman's agreement' amongst
>sysops that all out-of-UK connections would go through one gateway, so that
>these sorts of problems were avoided.
>
>Thanks in advance for your assistance; our users will be most appreciative if
>we can get this sorted.
>
>--
>73 de Martin G0HDB, GB7DXC sysop
>(and Cheltenham Cluster Support Group Membership Secretary & Treasurer)
>g0hdb at amdavies.demon.co.uk
>
>
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