Feature Request: Preference in bird

[Marek Küthe]

Thanks for the answer.

What happens when the preference is the same for two different protocol
types - which protocol is preferred? For example, if you have the
preference of BGP and Babel routes both set to 100, which route will be
chosen? BGP and Babel routes can't really be compared since BGP takes
the AS path and Babel takes the metric as the main decision criterion.

On Wed, 14 Jun 2023 13:05:15 +0200
Bernd Naumann <bernd at kr217.de> wrote:

> On 14.06.23 12:20, Marek Küthe wrote:
> > On Wed, 14 Jun 2023 11:52:38 +0200
> > Bernd Naumann <bernd at kr217.de> wrote:
> >   
> >> On 14.06.23 11:29, Marek Küthe wrote:  
> >>> Is it possible to view the preference using "birdc"?    
> >>
> >> `birdc show route` shows the protocol preference at the end of the line
> >> in brackets. Or do you mean something different, like when showing the
> >> protocols?  
> > 
> > ```
> >                      unicast [brandweb_v4 17:31:34.208] (100)
> >                      [AS4242422032i] via 172.20.191.129 on brandweb
> > ```
> > So that would have a preference of 100, right?  
> 
> Yes.
> 
> > 
> > ```
> > fd04:234e:fc31::/128 unicast [inner_network 2023-06-13] (130/1)
> > [00:00:00:00:ac:16:95:e2] via fe80::2923:1 on p2prouter
> > ```
> > And what would be the preference 130 with a Babel metric of 1?
> >   
> 
> Yes. 130 is the default preference for babel.
> 
> >> `show protocols all`, does show the preference, too.  
> > 
> > Where exactly? I could not find anything there.
> >   
> 
> ```
> # birdc show protocols all
> # Shows all configured protocols, their state, details, etc, including
> preference.
> 
> # To view a single protocol:
> # birdc show protocols all ospf_ipv6
> BIRD 2.0.8 ready.
> Name       Proto      Table      State  Since         Info
> ospf_ipv6  OSPF       master6    up     2023-04-14    Running
>   Channel ipv6
>     State:          UP
>     Table:          master6
>     Preference:     150
>     ...
> ```
> 


-- 
Marek Küthe
m.k at mk16.de
er/ihm he/him
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