[BGPCEP-748] BGP does not sent UPDATE message if IPv4 MP capability was not advertised

Wed, 18 Apr 2018 07:59:14 +0000

I was trying to check if BGP is able to send old style BGP Update messages (without

Multi-Protocol Reach NLRI).

If peer advertises just IPv4 MP capability, then ODL uses Multi-Protocol Reach NLRI.

In case IPv4 MP is not advertised, ODL BGP does not sent update at all.

Including pcap showing OPEN messages and karaf.log.

Protocol configuration:

<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>172.17.0.3</router-id>
                <as>65000</as>
            </config>
        </global>
    </bgp>
</protocol>

Server configuration:

<bgp-peer-acceptor-config xmlns="urn:opendaylight:params:xml:ns:yang:odl-bgp-peer-acceptor-config">
    <config-name>default</config-name>
    <binding-address>172.17.0.3</binding-address>
    <binding-port>179</binding-port>
</bgp-peer-acceptor-config>

Peer config (tried to skip afi-safis, but got NPE at org.opendaylight.protocol.bgp.rib.impl.config.BgpPeer$BgpPeerSingletonService.<init>(BgpPeer.java:241)[202:org.opendaylight.bgpcep.bgp-rib-impl:0.8.1):

{
"neighbor": {
    "neighbor-address": "172.17.0.4",
    "timers": {
      "config":

{ "hold-time": 90, "connect-retry": 10 }

},
"config":

{ "peer-type": "INTERNAL" }

,
"transport": {
"config":

{ "remote-port": 179, "passive-mode": false }

    },
    "afi-safis": {
      "afi-safi": [

{ "afi-safi-name": "openconfig-bgp-types:IPV4-UNICAST" }

]
}
}
}

Route is writen to speaker's loc-rib

GET http://172.17.0.3:8181/restconf/operational/bgp-rib:bgp-rib/rib/bgp-example/loc-rib

{
"loc-rib": {
    "tables": [
      {
        "afi": "bgp-types:ipv4-address-family",
        "safi": "bgp-types:unicast-subsequent-address-family",
        "bgp-inet:ipv4-routes": {
          "ipv4-route": [
            {
              "prefix": "10.0.0.12/32",
              "path-id": 0,
              "attributes": {
                "origin":

{ "value": "igp" }

,
"as-path": {},
"local-pref":

{ "pref": 100 }

,
"ipv4-next-hop":

{ "global": "10.11.1.2" }

              }
            }
          ]
        }
      }
    ]
}
}

But not to adj-rib-out:

GET http://172.17.0.3:8181/restconf/operational/bgp-rib:bgp-rib/rib/bgp-example/peer/bgp:%2F%2F198.51.100.1/adj-rib-out

{
"adj-rib-out": {
    "tables": [
      {
        "afi": "bgp-types:ipv4-address-family",
        "safi": "bgp-types:unicast-subsequent-address-family",
        "bgp-inet:ipv4-routes": {},
        "attributes": {}
      }
    ]
}
}

OpenDaylight JIRA

[BGPCEP-748] BGP does not sent UPDATE message if IPv4 MP capability was not advertised