[Xorp-hackers] Error for XORP-OLSR when nodes are in different subnetwork

[Ben Greear]

On 02/24/2012 01:48 PM, Jiangxin Hu wrote:
> The scenraio only for wireless mesh network. In wired network, nodes in
> different sub networks cannot talk directly. So OSPF should not work/apply
> for this scenraio.
>
> Olsrd (an OLSR implementation) works for the scenario without XORP.

Ok, xorp must be doing something wrong then.  If you're a coder,
try finding where those messages are created and see if you can
figure out how to make it properly create the route.

Maybe it's a system call that fails, or maybe there is some
xorp logic that is assuming OSPF like behaviour that can be
relaxed....

Thanks,
Ben

>
> Thanks,
> Jiang
>
> -----Original Message-----
> From: Ben Greear [mailto:greearb at candelatech.com]
> Sent: Friday, February 24, 2012 4:16 PM
> To: Jiangxin Hu
> Cc: xorp-hackers at icir.org
> Subject: Re: [Xorp-hackers] Error for XORP-OLSR when nodes are in different
> subnetwork
>
> On 02/24/2012 01:01 PM, Jiangxin Hu wrote:
>> Recently I tested Xorp-OLSR for the scenario which nodes are belong to
>> different sub network. I got following errors in XORP log and routes are
> not inserted into kernel table.
>> The scenario is very simple. There are two nodes, one address is
> 10.0.0.2/24 and another address is 10.0.2.3/24.
>> [ 2012/02/24 15:39:53.283729 ERROR xorp_rib:36 RIB rib/rib.cc:870
>> add_route ] Attempting to add IGP route to table "olsr" (prefix
>> 10.0.2.3/32 next-hop
>> 10.0.2.3): no directly connected interface toward the next-hop router
>> [ 2012/02/24 15:39:53.284476 WARNING xorp_rib XrlRibTarget ] Handling
>> method for rib/0.1/add_route4 failed: XrlCmdError 102 Command failed
>> Could not add IPv4 route net 10.0.2.3/32, nexthop: 10.0.2.3 to unicast
>> RIB [ 2012/02/24 15:39:53.285360 ERROR xorp_olsr4:38 OLSR
>> contrib/olsr/xrl_queue.cc:236 route_command_done ] callback: add_route:
> ribname rib net 10.0.2.3/32 nexthop 10.0.2.3 102 Command failed Could not
> add IPv4 route net 10.0.2.3/32, nexthop: 10.0.2.3 to unicast RIB Is it a
> configuration error or it is a implementation limitation?
>
> Does this work with another routing protocol like OSPF?
>
> OLSR is not that well tested and I know it has at least some bugs in more
> complex network topologies.
>
> Thanks,
> Ben
>
>> Thanks,
>> Jiang
>>
>>
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>> Xorp-hackers at icir.org
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>
>
> --
> Ben Greear<greearb at candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com


-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com