Detecting link state, FreeBSD

[Marty Anstey]

On 03/11/2010 2:28 AM, Joakim Tjernlund wrote:
>> On Tue, Nov 02, 2010 at 11:00:39AM -0700, Mahlon E. Smith wrote:
>>> ...
>> Hello
>>
>> BIRD currently does not check or use link up/down state. OSPF routers
>> generally check reachability using HELLO packets, not by reported link
>> state, although sometimes this is also implemented. Drawback of HELLO
>> protocol (to check reachability) is that it has some timeout to find
>> out that the neighbor became unreachable. By default, it is ~ 40
>> seconds, But it is possible to configure it to < 10 seconds (see
>> hello/wait/dead interface options).
> I think BIRD really should check link state. Changing HELLO < 10 secs
> isn't going to make it much better and will also increase load and network
> bandwidth.
>
>  Jocke
I second this. Verifying an interface's link state should be a pretty
easy operation, and as I am planning on using BIRD in production fairly
soon, this is a feature I would really appreciate.

-- 
M