gobgpのバイナリを落としてきてebgp接続するまでの手順
構成図
192.168.33.0/24 AS65001 AS65002 +----------------+ +----------------+ | | ebgp | | | | <------------> | | | |.21 .22| | | +-------------------+ | +----------------+ +----------------+
wgetでバイナリを落とす
両ノードで以下のコマン打つ
$ wget https://github.com/osrg/gobgp/releases/download/v1.33/gobgp_1.33_linux_amd64.tar.gz $ tar xzf gobgp_1.33_linux_amd64.tar.gz
gobgpd.confを書く
.21側
[global.config] as = 65001 router-id = "192.168.33.21" [[neighbors]] [neighbors.config] neighbor-address = "192.168.33.22" peer-as = 65002
.22側
[global.config] as = 65002 router-id = "192.168.33.22" [[neighbors]] [neighbors.config] neighbor-address = "192.168.33.21" peer-as = 65001
gobgpを起動する
両ノードで以下のコマンドを打つ
$ sudo -E ./gobgpd -f gobgpd.conf
動作確認
ネイバーが確立されている
$ ./gobgp neighbor Peer AS Up/Down State |#Received Accepted 192.168.33.22 65002 00:03:01 Establ | 0 0
keepaliveは30秒間隔
sudo tcpdump -i enp0s8 tcp port bgp -n tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on enp0s8, link-type EN10MB (Ethernet), capture size 262144 bytes 07:51:45.797742 IP 192.168.33.21.bgp > 192.168.33.22.57554: Flags [P.], seq 2993027708:2993027727, ack 2208320632, win 114, options [nop,nop,TS val 293637 ecr 6968370], length 19: BGP 07:51:45.798091 IP 192.168.33.22.57554 > 192.168.33.21.bgp: Flags [.], ack 19, win 115, options [nop,nop,TS val 6998159 ecr 293637], length 0 07:51:46.008469 IP 192.168.33.22.57554 > 192.168.33.21.bgp: Flags [P.], seq 1:20, ack 19, win 115, options [nop,nop,TS val 6998369 ecr 293637], length 19: BGP 07:51:46.008552 IP 192.168.33.21.bgp > 192.168.33.22.57554: Flags [.], ack 20, win 114, options [nop,nop,TS val 293848 ecr 6998369], length 0 07:53:15.798364 IP 192.168.33.21.bgp > 192.168.33.22.57554: Flags [P.], seq 57:76, ack 58, win 114, options [nop,nop,TS val 383638 ecr 7058370], length 19: BGP 07:53:15.798969 IP 192.168.33.22.57554 > 192.168.33.21.bgp: Flags [.], ack 76, win 115, options [nop,nop,TS val 7088114 ecr 383638], length 0 07:53:16.053562 IP 192.168.33.22.57554 > 192.168.33.21.bgp: Flags [P.], seq 58:77, ack 76, win 115, options [nop,nop,TS val 7088369 ecr 383638], length 19: BGP 07:53:16.053599 IP 192.168.33.21.bgp > 192.168.33.22.57554: Flags [.], ack 77, win 114, options [nop,nop,TS val 383893 ecr 7088369], length 0 07:52:45.797160 IP 192.168.33.21.bgp > 192.168.33.22.57554: Flags [P.], seq 38:57, ack 39, win 114, options [nop,nop,TS val 353637 ecr 7028370], length 19: BGP 07:52:45.797508 IP 192.168.33.22.57554 > 192.168.33.21.bgp: Flags [.], ack 57, win 115, options [nop,nop,TS val 7058128 ecr 353637], length 0 07:52:46.040236 IP 192.168.33.22.57554 > 192.168.33.21.bgp: Flags [P.], seq 39:58, ack 57, win 115, options [nop,nop,TS val 7058370 ecr 353637], length 19: BGP 07:52:46.040318 IP 192.168.33.21.bgp > 192.168.33.22.57554: Flags [.], ack 58, win 114, options [nop,nop,TS val 353880 ecr 7058370], length 0
動作環境
$ cat /etc/redhat-release CentOS Linux release 7.1.1503 (Core) $ ./gobgp --version gobgp version 1.33