[Xorp-hackers] BGP groups

[Kristian Larsson]

I don't think all of the wanted functionality is
possible to implement.
Makin something simple work like:
protocols bgp {
  group My_transit_provider {
    local-as 1337;
    remote-as 1338;
    neighbour 1.3.3.7;
    neighbour 1.3.3.8;
    neighbour 1.3.3.9;
    neighbour 1.3.3.10;
    prefix-list out My_prefixes;
  }
}
is feasible.
however:
protocols bgp {
  group My_transit_provider {
    local-as 1337;
    remote-as 1338;
    neighbour 1.3.3.7 {
      prefix-list in peer_1337;
    neighbour 1.3.3.8;
    neighbour 1.3.3.9;
    neighbour 1.3.3.10;
    prefix-list out My_prefixes;
  }
}
is a bit harder. In this case prefix-list
"My_prefixes" is to be used for all neighbours
except 1.3.3.7 where peer_1337 is to be used.

Or is there a way I just don't know of.

   Kristian

On Mon, Oct 31, 2005 at 08:12:17PM +0000, Mark Handley wrote:
> You may be able to add this with only a template file change, and no
> actual coding changes.
> 
>  - Mark
> 
> On 10/31/05, Kristian Larsson <kristian@juniks.net> wrote:
> > I would like to hear peoples opinion on a group configuration under bgp.
> > As so often I would like to bring up the "Juniper way" of doing things. In Juniper a normal BGP neighbor would be configured like this:
> > protocols bgp {
> >   local-as 1337;
> >   group My_transit_provider {
> >     remote-as 1338;
> >     neighbour 1.3.3.7;
> >     prefix-list out My_prefixes;
> >   }
> > }
> >
> > Having several peers with the same settings is real easy since you just add another neighbor statement, like this:
> > protocols bgp {
> >   group My_transit_provider {
> >     local-as 1337;
> >     remote-as 1338;
> >     neighbour 1.3.3.7;
> >     neighbour 1.3.3.8;
> >     neighbour 1.3.3.9;
> >     neighbour 1.3.3.10;
> >     prefix-list out My_prefixes;
> >   }
> > }
> >
> > As group doesn't collide with any present BGP commands it would be easy to add and let the old peer statement remain as is to not surprise anyone ;)
> >
> > Any thoughts?
> >
> >   Kristian.
> >
> >
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> >