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# Coordination with OpenSwitch
GoBGP will be able to coordination with [OpenSwitch](http://www.openswitch.net)
by connecting to ovsdb using unixsocket(use [ovsdb library of golang](https://github.com/osrg/libovsdb)).
And GoBGP will behaves as BGP agent of OpenSwitch because GoBGP can share configuration
and routing information in coordination with OpenSwitch.
This page explains how to coordination to OpenSwitch.
And this example have step that share configuration and routing information between OpenSwitch and Gobgp in [docker container](https://hub.docker.com/r/openswitch/genericx86-64/).
## Prerequisites
- Install the docker environment referring to the [here](https://docs.docker.com/engine/installation/ubuntulinux/)
- Install the gobgp refarring to the [here](https://github.com/osrg/gobgp/blob/master/docs/sources/getting-started.md)
## Getting and Running OpenSwitch container
- Getting image
Thera are two ways, to get OpenSwitch docker image.
First way, get image from DockerHub using the **docker pull** command.
Second way, build the iamge refarring to the [Step-by-Step Guide](http://www.openswitch.net/documents/dev/step-by-step-guide) of OpenSwitch.
- In the case of **docker pull**
```bash
$ sudo docker pull openswitch/genericx86-64
$ sudo docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
openswitch/genericx86-64 latest 69682b4baeba 4 months ago 321.3 MB 1.278 GB
```
- Running container
Share the GoBGP binary when you execute docker run command.
```bash
sudo docker run --privileged -v /tmp:/tmp -v /dev/log:/dev/log -v /sys/fs/cgroup:/sys/fs/cgroup -v $GOPATH/bin:/home/root/bin -h ops --name ops openswitch/genericx86-64 /sbin/init &
$ sudo docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4eebc0f25f9c openswitch/genericx86-64 "/sbin/init" 3 seconds ago Up 3 seconds ops
```
## Starting Coordination with OpenSwitch
- Enter the OpenSwitch container
```bash
% sudo docker exec -it ops bash
```
- Setting OpenSwitch
```bash
bash-4.3# vtysh
switch# show running-config
Current configuration:
!
!
!
switch# configure terminal
switch(config)# router bgp 65001
switch(config-router)# bgp router-id 10.0.255.1
switch(config-router)# neighbor 10.0.255.2 remote-as 65002
switch(config-router)# do show running-config
Current configuration:
!
!
!
router bgp 65001
bgp router-id 10.0.255.1
neighbor 10.0.255.2 remote-as 65002
!
```
- Starting GoBGP
```bash
bash-4.3# cd /home/root/bin
bash-4.3# gobgpd --openswitch -p
INFO[0000] gobgpd started
INFO[0000] Coordination with OpenSwitch
INFO[0000] Peer 10.0.255.2 is added
INFO[0015] Peer Up
```
If GoBGP has routes in Global Rib, routes relayed to the OpenSwitch as follows:
```bash
bash-4.3# vtysh
switch# show ip bgp
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Local router-id 10.0.255.1
Network Next Hop Metric LocPrf Weight Path
* 10.10.10.0/24 10.0.255.2 0 0 32768 65002 i
* 10.10.11.0/24 10.0.255.2 0 0 32768 65002 i
* 10.10.12.0/24 10.0.255.2 0 0 32768 65002 i
Total number of entries 3
```
|
