bird.conf

router id 172.16.70.1;

log syslog { info, remote, warning, error, auth, fatal, bug };
log stderr all;
debug protocols {events, states, interfaces};
graceful restart wait 15;

protocol kernel {
    ipv4 {
        import none;
        export all;
    };
    learn;
    scan time 10;
}

protocol static {
    ipv4;
    route 172.16.70.0/24 blackhole;
}

protocol direct {
    ipv4;
    interface "eth0";
}

protocol device {
    scan time 100;
}

protocol bgp bgp1 {
    local as 65001;
    neighbor 10.1.0.1 as 65002; 
    ipv4 {
        next hop self;
        
        import all;
        export filter {
            if net ~ [172.16.70.0/24] then accept;
            if source = RTS_BGP then accept;
            reject;
        };
    };
}

bird.md

BIRD2

BIRD2を利用したBGPルーターのサンプル

パラメータ

name	description
172.16.70.1	ルーターのIP
172.16.70.0/24	広報するIP
65001	自分ASN
10.1.0.1	境界IP
65002	相手のASN