[olsr-dev] Routing Quirks

Sven-Ola Tuecke (spam-protected)
Thu Mar 16 11:31:55 CET 2006


experimenced some annoying routing behavior ( sample gif hopefully attached, 
otherwise see http://styx.commando.de/sven-ola/sample-mesh.gif ). All 5 
nodes running olsrd-0.4.10+patches, lq, lqdijkstralimit = 0 / 5.0, fish, 
tcint=2.0, tcvaltime = 250. All links are in OK with an ETX of 1.5 ~ 2.5. 
The normal routing from A to D is: A -> E -> D.

If E is removed / dead / oops, it needs up to 10 minutes to get the 
alternative route over A -> B -> C -> D. Until this time, D is not present 
in the routing table of A. Not present in Httpinfo/routes too. Seems to be 
symmetrical, sind D has no routes to A also.

This is caused by the long fish-tcvaltime of 250 seconds + funny time 
addons. Httpinfo/nodes says: E is still in the topo-entry-list, but of 
course no node has a link to E because the HelloInt/HelloValTime is long 
expired (after ~ 90sec). So no routes. Any ideas for improvements?

LG Sven-Ola
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