[OLSR-users] Received HNA from NON SYM neighbor???

[Andreas Tønnesen]

Hi,

This means that the node received a HNA message from a neighbor to which
it has no symmetric link(yet). According to the RFC such messages(all
messages but HELLO) are to be silently discarded. In other words - they
are not beeing processed.
As soon as a symmetric link is established, incoming HNA messages(and
others) will be processed. One could imagine caching up HNA/TC/MID info
awainting a symmetric link - but this would not be RFC compilant - and IMO
this is not a big problem.

I hope this answerd yopur question.

- Andreas


> Hello everybody,
>
> I'm setting a mesh network using the MeshBoxKit of Marc Quinton (Openwrt +
> olsr
> +wrt54g) but I have some problem.
> One of my nodes is receiving this message "Received HNA from NON SYM
> neighbor
> 192.168.1.12" but doesn't add a route to 192.168.1.12.
> I would also like to know what does this message mean?
>
> Thank you for your help and for your work (except this node, all is
> working well
> ;-)
>
> network address 192.168.1.0
> netmask 255.255.225.0
> olsr v0.4.7
> ip address of the node that receives this message : 192.168.1.11
>
> Received TC from NON SYM neighbor 192.168.1.10
> HYST[192.168.1.10] link set to NOT pending!
> Setting 192.168.1.10 as MPR
> (ioctl)Adding route: 192.168.1.10 gw 192.168.1.10 (hopc 1)
> Neighbor list(05:57:23.781047):
> 192.168.1.10:l=1:m=1:w=7[2hlist:]
> 192.168.1.12:l=0:m=0:w=7[2hlist:]
> topology table: 05:57:23.781047
>
> TC: adding entry 192.168.1.10
> HYST[192.168.1.12] link set to NOT pending!
> Setting 192.168.1.10 as MPR
> Neighbor list(05:57:25.981050):
> 192.168.1.10:l=1:m=1:w=7[2hlist:]
> 192.168.1.12:l=0:m=0:w=7[2hlist:]
> topology table: 05:57:25.981050
> 192.168.1.10 -> 192.168.1.11
>
> (ioctl)Adding route: 0.0.0.0 gw 192.168.1.10 (hopc 1)
> (ioctl)Adding route: 192.168.0.0 gw 192.168.1.10 (hopc 1)
> Received HNA from NON SYM neighbor 192.168.1.12
> Neighbor list(05:57:28.071246):
> 192.168.1.10:l=1:m=1:w=7[2hlist:]
> 192.168.1.12:l=0:m=0:w=7[2hlist:]
> topology table: 05:57:28.071246
> 192.168.1.10 -> 192.168.1.11
>
> Neighbor list(05:57:30.161047):
> 192.168.1.10:l=1:m=1:w=7[2hlist:]
> 192.168.1.12:l=0:m=0:w=7[2hlist:]
> topology table: 05:57:30.161047
> 192.168.1.10 -> 192.168.1.11
>
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>


---------
Andreas Tønnesen
http://www.olsr.org