[Olsr-dev] I had a persistent loop in laboratory network

ZioPRoTo (Saverio Proto) (spam-protected)
Tue Oct 19 18:23:25 CEST 2010


See the attached topology. OLSR version 0.6.0. It is a network of 10
PC connected via VPN links with tincd.

IP packets with destination 10.195.228.128 loop between routers
10.179.155.153 and router 10.179.196.113 The loop is stable over time.
I can SSH in the routers and see the weird entries in the routing
table that cause the loop.

Configuration of the nodes is generated with this script:
https://minerva.netgroup.uniroma2.it/fairvpn/browser/fairvpn/fairvpn-planet.py#L116

(this should explain why the etx values are all "ones" with a little
introduced error.)

How can I debug this problem ? I really have never seen anything like
this before and I have no idea how to debug the problem.

Looks like dot draw plugin shows the links to 10.195.228.128 but
routers do not forward to that link. Resetting OLSR with the same
configuration on 10.179.155.153 and 10.179.196.113 fixed the routing
tables.

Saverio
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