Combining routes in BIRD BGP export

[arno.odermatt at ch.schindler.com]

Hi all,

is this aggregation method also to be used for OSPF (outgoing an interface 
in area 0.0.0.0)?

thx for your advise

Ar







From:   "Dmitry S. Nikolaev" <dnikolaev at mega-net.ru>
To:     Andy Linton <asjl at lpnz.org>, 
Cc:     bird-users at network.cz
Date:   26.03.2014 05:36
Subject:        Re: Combining routes in BIRD BGP export
Sent by:        owner-bird-users at atrey.karlin.mff.cuni.cz



Hi.

Also you can use:
protocol static {
        #Our Aggregated prefix
        route 1.2.3.0/24 drop;
}

filter out {
    if (source = RTS_STATIC) && (net = 1.2.3.0/24) then {
        accept "OUT: Announce our Aggregated pref ", net;
    }
    reject;
}

protocol bgp {
         ...skiped....
        export filter OUT;
        ...skiped...
}

--
With best regards, Dmitry S. Nikolaev

Moscow, Russia
mail: dnikolaev at mega-net.ru

On 26.03.2014 00:54, Ondrej Zajicek wrote:
> On Thu, Mar 06, 2014 at 08:08:20PM +1300, Andy Linton wrote:
>> I saw a recent post about combining routes in OSPF and wanted the 
answer to
>> the BGP version of the question.
>>
>> I have a /24 split into several subnets on my BGP speaking box. I only 
want
>> to export the /24.
>>
>> On quagga or cisco I'd use a "network" statement.
> Usual solution is to use static route with that prefix. See this 
example:
>
> https://gitlab.labs.nic.cz/labs/bird/wikis/BGP_example_1
>




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