Bird redundant routers with same AS on same location and prefix delegation to lower router

[Andrew]

Hi.

Something like:

template bgp bgp_local {
         local as my_as;
         import filter import_bgp;
         export filter export_bgp;
multihop;
         rr client;
         rr cluster id 1.0.0.1;
}

# R2 - also RR; import all routes from it
protocol bgp bgp_peer_r2 from bgp_local {
         description "R2";
         neighbor x.x.x.x as my_as;
         import all;
}

# C1 - client
protocol bgp bgp_peer_c1 from bgp_local {
         description "C1";
         neighbor x.x.x.y as my_as;
}

cluster id should be same on all RRs.

On 18.09.2017 15:11, Gelderman, Richard wrote:
>
> Hi Andrew,
>
> As I am new to Bird I can not find a good example how to create a RR 
> cluster with two routers R1 + R2.
>
> Do you have experience with a RR cluster with multiple routers? My 
> biggest question is acquily how to config the
>
> sessions between R1 + R2 as clustermembers without creating a loop.
>
> Regards, Richard
>
> *Van:*Andrew [mailto:nitr0 at seti.kr.ua]
> *Verzonden:* donderdag 7 september 2017 16:55
> *Aan:* Gelderman, Richard <r.gelderman at rtvoost.nl>
> *Onderwerp:* Re: Bird redundant routers with same AS on same location 
> and prefix delegation to lower router
>
> You may redistribute all routes between R1 and R2 using RR (both 
> received from R3 and received from uplinks), and redistribute just 
> default to R3 using separate table (with static default and routes 
> peering to main table).
>
> On 07.09.2017 17:38, Gelderman, Richard wrote:
>
>     Hi Adrew,
>
>     I thought about this option, I don’t want to pass a full BGP table
>     towards R3.
>
>     In other words R1 + R2 should be used for routing for all routes
>     and R3 should only
>
>     route net A and net B and must route through to reach other networks.
>
>     Regards, Richard
>
>     *Van:*Bird-users [mailto:bird-users-bounces at network.cz] *Namens
>     *Andrew
>     *Verzonden:* donderdag 7 september 2017 15:06
>     *Aan:* bird-users at network.cz <mailto:bird-users at network.cz>
>     *Onderwerp:* Re: Bird redundant routers with same AS on same
>     location and prefix delegation to lower router
>
>     Hi.
>
>     You should configure R1 and R2 as route reflectors.
>
>
>     On 07.09.2017 14:17, Gelderman, Richard wrote:
>
>         I am trying to achieve a redundant routing setup with two
>         routers with the same ASN who do prefix delegation to a lower
>         router.
>
>         The setup is the following:
>
>                AS1000 ISP1    ISP2 AS2000
>
>                        |           |
>
>                        |           |
>
>            AS10000    R1 ======== R2 AS10000
>
>         prefix /22     \   iBGP   /  prefix /22
>
>                         \        /
>
>                          \      /
>
>                           \    /
>
>                            R3 AS65000
>
>                            /  \
>
>                           /    \
>
>                      net A      net B
>
>                  prefix /24     prefix /24
>
>         Does anybody has experience with this kind of setup?
>
>         Regards,
>
>         Richard
>

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