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route-server.md

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Route Server

This page explains how to set up GoBGP as a route server

Prerequisites

Assumed that you finished Getting Started.

Configuration

This example uses the following simple configuration file, gobgpd.conf. There are three changes from the configuration file used in Getting Started

  • Peers are configured as route server clients (of course!).
  • GoBGP doesn't try to connect to peers. It only listens and accepts.
  • MD5 passwords are enabled.
[global.config]
  as = 64512
  router-id = "192.168.255.1"

[[neighbors]]
  [neighbors.config]
    neighbor-address = "10.0.255.1"
    peer-as = 65001
    auth-password = "hoge1"
  [neighbors.transport.config]
    passive-mode = true
  [neighbors.route-server.config]
    route-server-client = true

[[neighbors]]
  [neighbors.config]
    neighbor-address = "10.0.255.2"
    peer-as = 65002
    auth-password = "hoge2"
  [neighbors.transport.config]
    passive-mode = true
  [neighbors.route-server.config]
    route-server-client = true

Starting GoBGP

Let's start gobgpd:

$ sudo -E gobgpd -f gobgpd.conf
{"level":"info","msg":"Peer 10.0.255.1 is added","time":"2015-04-06T22:55:57+09:00"}
{"level":"info","msg":"Peer 10.0.255.2 is added","time":"2015-04-06T22:55:57+09:00"}

GoBGP implements multiple RIBs, that is, each peer has own local RIB. Let's check respectively.

$ gobgp neighbor 10.0.255.1 local
   Network            Next Hop        AS_PATH    Age        Attrs
*> 10.3.0.0/24        10.0.255.2      [65002]    00:05:50   [{Origin: 0} {Med: 0}]
*> 192.168.2.0/24     10.0.255.2      [65002]    00:05:50   [{Origin: 0} {Med: 0}]
$ gobgp neighbor 10.0.255.2 local
   Network            Next Hop        AS_PATH    Age        Attrs
*> 10.3.0.0/16        10.0.255.1      [65001]    00:06:12   [{Origin: 0} {Med: 0}]
*> 10.3.0.1/32        10.0.255.1      [65001]    00:06:12   [{Origin: 0} {Med: 0}]

Of course, you can also look at the adjacent rib-in and rib-out of each peer as done in Getting Started.