[Olsr-users] OLSR disconnets all routes when a interface will be added or removed

[Michael Rack]

Sure.

It must be OLSR because the image that i've attached got its data from
the txtinfo-plugin. You can see that at 18:19:32 the route were removed
and comes up at
18:21:58, the routes were removed for 2 Minutes and 26 seconds.

The script relates to the section "LINKS" http://127.0.0.1:2001/links
The script reads each line and send the data to an rrd-file.

When the interface was removed, the txtinfo-plugin returned a empty
"links"-Section.

Sometimes i got nice stats like "OLSR Problem Remove Interface.png".

That images was taken on my concentrator. All connections went trough
that router (default route). When interfaces will be added or removed,
that kills my whole network for minutes / seconds. That is a big problem
because our layer2 network-provider sometimes have service interruptions
on one client end that will disturb our complete network functionality.

In the past i used a bridge-interface. OLSR was running on that
interface and all mit VPN-Clients were assigned to that
bridge-interface. But now we switched to unique interfaces dirctly
assigned to OLSR (tap0, tap1, tap2 ....). We configured up to 50
interfaces to avoid to make changes every time a new interface will be
needed. We choose that method to get a clear Layer-2 network. We were
not able to identify the correct layer-2 path because all VPN-Clients
saw each other directly via the software-bridge. We like to see the path
A > B > C and not only A > C since OLSR does not take advance over the
latency between multipathes.

Liebe Grüße aus Freilassing,

Michael Rack
RSM Freilassing
-- 
RSM Freilassing                 Tel.: +49 8654 607110
Nocksteinstr. 13                Fax.: +49 8654 670438
D-83395 Freilassing            www.rsm-freilassing.de 

Am 03.12.2014 um 09:22 schrieb Henning Rogge:
> On Tue, Dec 2, 2014 at 6:36 PM, Michael Rack
> <(spam-protected)> wrote:
>> Hi Guys,
>>
>> what is wrong with my OLSR client? I run a OLSR on a VPN-Server. I have
>> the devices tap0 to tap28 this devices will be created dynamicly. I've
>> setuped that interfaces in olsrd.conf.
>>
>> When a client connects to the Network, a interface tapX will be created
>> and all routes gets flushed from OLSR. After 30 seconds all the routes
>> went back.
>> I see this behavior also when a client leaves the network and the
>> interface gets removed.
> Could you do a test to see if its really OLSR that removes all routes?
>
> Kill the routing agent on the node with a "kill -9" so that the routes
> stay online and then add the new interface. Do the routes stay or are
> they removed? Is Olsrd "restarted" by something?
>
> Henning

-------------- next part --------------
A non-text attachment was scrubbed...
Name: OLSR Problem Remove Interface.png
Type: image/png
Size: 442968 bytes
Desc: not available
URL: <http://lists.olsr.org/pipermail/olsr-users/attachments/20141207/057c7faf/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: olsr.png
Type: image/png
Size: 264972 bytes
Desc: not available
URL: <http://lists.olsr.org/pipermail/olsr-users/attachments/20141207/057c7faf/attachment-0001.png>