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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](https://github.com/osrg/gobgp/blob/master/docs/sources/getting-started.md).
## Configuration
This example uses the following simple configuration file, `gobgpd.conf`. There are three changes from
the configuration file used in [Getting Started](https://github.com/osrg/gobgp/blob/master/docs/sources/getting-started.md)
* Peers are configured as route server clients (of course!).
* GoBGP oesn't try to connect to peers. It only listens and accepts.
* MD5 passwords are enabled.
```
$ cat gobgpd.conf
[Global]
[Global.GlobalConfig]
As = 64512
RouterId = "192.168.255.1"
[Neighbors]
[[Neighbors.NeighborList]]
[Neighbors.NeighborList.NeighborConfig]
NeighborAddress = "10.0.255.1"
PeerAs = 65001
AuthPassword = "hoge1"
[Neighbors.NeighborList.Transport]
[Neighbors.NeighborList.Transport.TransportConfig]
PassiveMode = true
[Neighbors.NeighborList.RouteServer]
[Neighbors.NeighborList.RouteServer.RouteServerConfig]
RouteServerClient = true
[[Neighbors.NeighborList]]
[Neighbors.NeighborList.NeighborConfig]
NeighborAddress = "10.0.255.2"
PeerAs = 65002
AuthPassword = "hoge2"
[Neighbors.NeighborList.Transport]
[Neighbors.NeighborList.Transport.TransportConfig]
PassiveMode = true
[Neighbors.NeighborList.RouteServer]
[Neighbors.NeighborList.RouteServer.RouteServerConfig]
RouteServerClient = 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](https://github.com/osrg/gobgp/blob/master/docs/sources/getting-started.md).
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