[Olsr-dev] Missing routes and unexpected routes reg.

[Henning Rogge]

Okay,

this looks like a bug introduced by the latest "cleanup" of the domain
system... without a MPR algorithm every node should be a MPR, which
means every node should create a TC. Still, even without TCs from 1
and 4, the topology should be connected.

I will try to reproduce the scenario tomorrow at work.

Henning

On Mon, Jun 9, 2014 at 8:49 AM, Vigneswaran R <(spam-protected)> wrote:
> On 06/09/2014 12:09 PM, Henning Rogge wrote:
>>
>> Just a thought I had,
>>
>> did you try to use the "MPR plugin" ? I ask because its quite new and
>> needs a lot more testing.
>
>
> No. I haven't.
>
> Also, I verified the logs and couldn't find any TC messages (Message type:
> 1) generated by R1 or R4 (the end nodes).
>
> Is there any way to query the olsrd2 daemon about MPR related information?
>
>
> Regards,
> Vignesh
>
>
>> Henning
>>
>> On Sat, Jun 7, 2014 at 4:02 AM, vignesh <(spam-protected)> wrote:
>>>
>>> On 2014-06-06 18:41, Henning Rogge wrote:
>>>>
>>>> Hi,
>>>>
>>>> just to make sure, you can see all four nodes producing TC messages?
>>>
>>>
>>> I remember only R2 and R3 produced TC. However, I will recheck the logs
>>> on
>>> Monday.
>>> (I have under the impression that only ROUTING MPRs will generate TC, and
>>> in
>>> this topology, R2, R3 may be the MPRs for its neighbours).
>>>
>>>
>>>> Maybe I have to replicate this setup when I am back at work on
>>>> Tuesday, I have no clue what is going on.
>>>
>>>
>>> Ok. At this point what I suspect is, R3 is not selecting R2 as MPR. So,
>>> the
>>> TC message generated by R3 (which contains information about R4 also) is
>>> not
>>> reaching R1. So, R1 is not getting route for R4. Could you please tell
>>> how
>>> to verify the above from the logs? Esp. how to see information about
>>> MPRs?
>>>
>>>
>>> R1 <---> R2 <---> R3 <---> R4
>>>
>>> If you would like to look into the logs I can compress the logs and send
>>> you. Thanks.
>>>
>>> Regards,
>>> Vignesh
>>>
>>>
>>>> Henning
>>>>
>>>> On Fri, Jun 6, 2014 at 2:38 PM, Vigneswaran R <(spam-protected)>
>>>> wrote:
>>>>>
>>>>> On 06/06/2014 02:58 PM, Vigneswaran R wrote:
>>>>>
>>>>> On 06/06/2014 02:23 PM, Vigneswaran R wrote:
>>>>>
>>>>> On 06/06/2014 01:01 PM, Henning Rogge wrote:
>>>>>
>>>>> On Fri, Jun 6, 2014 at 9:39 AM, Bastian Bittorf
>>>>> <(spam-protected)>
>>>>> wrote:
>>>>>
>>>>> * Vigneswaran R <(spam-protected)> [06.06.2014 09:37]:
>>>>>
>>>>> Could you please help in debugging these problems? Thanks.
>>>>>
>>>>> can you show is you commandline or config? bye, bastian
>>>>>
>>>>> The output of "ip addr" on every node would also help.
>>>>>
>>>>>
>>>>> Command Line:
>>>>>
>>>>>      ./olsrd2 -l olsrd2.conf
>>>>>
>>>>> Configuration file contents:
>>>>>
>>>>> [interface=eth0]
>>>>> [interface=eth1]
>>>>>
>>>>> Exception: On R1, only eth1 included.
>>>>>
>>>>> IP Addr: (pfa the complete output)
>>>>>
>>>>> R1: eth0: 1.0.0.2/24 (non-olsr), eth1: 10.1.1.1/32
>>>>> R2: eth0: 10.1.2.1/32, eth1: 10.1.2.2/32
>>>>> R3: eth0: 10.1.3.1/32, eth1: 10.1.3.2/32
>>>>> R4: eth0: 10.1.4.1/32, eth1: 10.1.4.2/32
>>>>>
>>>>> (I am using /32 mask for testing. However, I got the same problem with
>>>>> /8
>>>>> mask also).
>>>>>
>>>>> Please let me know if any other information is required.
>>>>>
>>>>>
>>>>> PFA the output of the following command on all the nodes. Please see
>>>>> whether
>>>>> this helps.
>>>>>
>>>>> echo "nhdp neighlink" | nc 127.0.0.1 2009
>>>>>
>>>>>
>>>>> Restarted olsrd2 with debug=all and observed the following from the
>>>>> collected logs,
>>>>>
>>>>> 1. R1 received TC messages originated from R2 (10.1.2.1) only.
>>>>>    -- Shouldn't it get TC from 10.1.3.1 also? I think, this is the
>>>>> reason
>>>>> why
>>>>> R1 is not getting route for R4.
>>>>>
>>>>> 2. R2 received TC messages originated from R3 (10.1.3.1) only.
>>>>>    -- I think, this is fine for the 4 nodes topology.
>>>>>
>>>>> 3. R3 received TC messages originated from R2 (10.1.2.1) only.
>>>>>    -- this is also fine for the same reason.
>>>>>
>>>>> 4. R4 received TC messages originated from both R2 (10.1.2.1) and R3
>>>>> (10.1.3.1).
>>>>>
>>>>> If you want me to post specific portions of the log files, please
>>>>> suggest.
>>>>>
>>>>> Regards,
>>>>> Vignesh
>>>>>
>>>>>
>>>>>
>>>>> Regards,
>>>>> Vignesh
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Olsr-dev mailing list
>>>>> (spam-protected)
>>>>> https://lists.olsr.org/mailman/listinfo/olsr-dev
>
>