OpenDayLight provides a plugin for BGP which features:

• inter/intra-AS peering
• routes advertising
• routes originating
• routes storage

This is a short tutorial to build a BGP-LS tunnel communication.

• Install the feature:

   feature:install odl-bgpcep-bgp 

curl -u "admin:admin" -X GET  http://192.168.103.144:8181/restconf/operational/network-topology:network-topology/

{"network-topology":{"topology":[{"topology-id":"example-ipv4-topology","server-provided":true,"topology-types":
{"odl-bgp-topology-types:bgp-ipv4-reachability-topology":{}}},{"topology-id":"flow:1"},{"topology-id":"example-
ipv6-topology","server-provided":true,"topology-types":{"odl-bgp-topology-types:bgp-ipv6-reachability-topology":
{}}},{"topology-id":"example-linkstate-topology","server-provided":true,"topology-types":{"odl-bgp-topology-
types:bgp-linkstate-topology":{}}}]}}

• Check that BGP speaker is listenning on TCP port 1790 (BGP port of ODL):

   netstat -lapute | grep 1790 

• Check that BGP peer is listening for BGP connection :

   telnet <peer-ip-address> <bgp-port> 

• Create bgp-rib.xml file

<config xmlns="http://openconfig.net/yang/bgp">
    <router-id>192.168.103.144</router-id>
    <as>64514</as>
</config>

• Add BGP RIB

curl -u "admin:admin" -H "Content-Type: text/xml"  -d @bgp-rib.xml -X PUT  http://192.168.103.144:8181/restconf/config/openconfig-bgp:bgp/global/config

• Check values are right

curl -u "admin:admin" -X GET  http://192.168.103.144:8181/restconf/config/openconfig-bgp:bgp/global/config

curl -u "admin:admin" -X GET   http://192.168.103.144:8181/restconf/config/openconfig-network-instance:network-instances/network-instance/global-bgp/openconfig-network-instance:protocols | python -m json.tool

<protocol xmlns="http://openconfig.net/yang/network-instance">
    <name>bgp-example</name>
    <identifier xmlns:x="http://openconfig.net/yang/policy-types">x:BGP</identifier>
    <bgp xmlns="urn:opendaylight:params:xml:ns:yang:bgp:openconfig-extensions">
        <global>
            <config>
                <router-id>192.168.103.144</router-id>
                <as>64514</as>
            </config>
            <afi-safis>
                <afi-safi>
                    <afi-safi-name>LINKSTATE</afi-safi-name>
                </afi-safi>
            </afi-safis>
        </global>
    </bgp>
</protocol>

 curl -u "admin:admin" -X POST -H "Content-Type: text/xml" -d @bgp-config.xml http://192.168.103.144:8181/restconf/config/openconfig-network-instance:network-instances/network-instance/global-bgp/openconfig-network-instance:protocols

curl -u "admin:admin" -X GET http://192.168.103.144:8181/restconf/operational/bgp-rib:bgp-rib/rib/bgp-example | python -m json.tool

“BGP uses TCP as its transport protocol, by default listens on port 179. OpenDaylight BGP plugin is configured to listen on port 1790, due to privileged ports restriction for non-root users. One of the workarounds is to use port redirection. In case other port is desired to be used instead, we can reconfigure it.” [1]

<bgp-peer-acceptor-config xmlns="urn:opendaylight:params:xml:ns:yang:odl-bgp-peer-acceptor-config">
    <config-name>default</config-name>
    <binding-address>192.168.103.144</binding-address>
    <binding-port>179</binding-port>
</bgp-peer-acceptor-config>

curl -u "admin:admin" -d @bgp-port.xml -X PUT http://192.168.103.144:8181/restconf/config/odl-bgp-peer-acceptor-config:bgp-peer-acceptor-config/default

Edit 41-bgp-example.xml file

<module>
 <type xmlns:prefix="urn:opendaylight:params:xml:ns:yang:controller:bgp:rib:impl">prefix:bgp-peer-acceptor</type>
 <name>bgp-peer-server</name>
 <binding-address>0.0.0.0</binding-address>
 <binding-port>1790</binding-port>
</module>

<neighbor xmlns="urn:opendaylight:params:xml:ns:yang:bgp:openconfig-extensions">
    <neighbor-address>192.168.103.143</neighbor-address>
    <afi-safis>
        <afi-safi>
            <afi-safi-name>LINKSTATE</afi-safi-name>
        </afi-safi>
        <afi-safi>
            <afi-safi-name xmlns:x="http://openconfig.net/yang/bgp-types">x:IPV4-UNICAST</afi-safi-name>
            <receive>false</receive>
            <send-max>0</send-max> <!-- Npath again for this peer -->
        </afi-safi>
    </afi-safis>
    <timers>
        <config>
            <hold-time>90</hold-time>
            <connect-retry>10</connect-retry>
        </config>
    </timers>
    <transport>
        <config>
            <remote-port>179</remote-port>
            <passive-mode>false</passive-mode>
        </config>
    </transport>
    <config>
        <peer-type>EXTERNAL</peer-type>
     <peer-as>64513</peer-as>
    </config>
</neighbor>

curl -u "admin:admin" -X POST -H "Content-Type: text/xml" -d @bgp-peer.xml http://192.168.103.144:8181/restconf/config/openconfig-network-instance:network-instances/network-instance/global-bgp/openconfig-network-instance:protocols/protocol/openconfig-policy-types:BGP/bgp-example/bgp/neighbors

Check peer configuration :

curl -u "admin:admin" -X GET http://192.168.103.144:8181/restconf/config/openconfig-network-instance:network-instances/network-instance/global-bgp/openconfig-network-instance:protocols/protocol/openconfig-policy-types:BGP/bgp-example/bgp/neighbors | python -m json.tool

• http://docs.opendaylight.org/en/stable-nitrogen/user-guide/bgp-user-guide.html#overview