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1. All the ONOS instances should have session with every PCC.
2. Devices' links' cost/bandwidth should not be modified after initial config.

Usage

1. To setup a MPLS tunnels between routers using ONOS, ONOS should know about the topology.

BGP should provide this information to ONOS.

{
    "apps": {

        "org.onosproject.provider.bgp.cfg": {

            "bgpapp": {

                "routerId": "172.16.0.22",

                "localAs": 100,

                "maxSession": 20,

                "lsCapability": true,

                "holdTime": 180,

                "largeAsCapability": false,

                "flowSpecCapability": "IPV4",

                "bgpPeer":[ {"peerIp": "172.16.3.15", "remoteAs": 100, "peerHoldTime": 120, "connectMode":"active"}

                ]

            }

        }

    }

}

This can be checked using devices and links commands respectively.

2. Configuration at router should be made to establish PCEP session with ONOS. 

3. Next CLI/web/REST can be used to configure tunnels.

onos> pce-setup-path l3::routinguniverse=0:asn=100:domainid=-1408236785:isoid=5555.5555.0055 l3::routinguniverse=0:asn=100:domainid=-1408236785:isoid=6666.6666.0066 0 rsvp 

 Please note that 0 stands for RSVP signaled LSPs.

 You can find further help for CLI using pce-setup-path --help.

 onos> pce-query-path

path-id            : 0 

source             : IpTunnelEndPoint{ip=5.5.5.5} 

destination        : IpTunnelEndPoint{ip=6.6.6.6} 

path-type          : MPLS 

symbolic-path-name : rsvp 

constraints:            

   cost            : TE_COST 

   bandwidth       : 0.0

onos> 

onos> pce-update-path -b 10 0

onos> pce-query-path

path-id            : 1 

source             : IpTunnelEndPoint{ip=5.5.5.5} 

destination        : IpTunnelEndPoint{ip=6.6.6.6} 

path-type          : MPLS 

symbolic-path-name : rsvp 

constraints:            

   cost            : null 

   bandwidth       : 10.0

path-id            : 0 

source             : IpTunnelEndPoint{ip=5.5.5.5} 

destination        : IpTunnelEndPoint{ip=6.6.6.6} 

path-type          : MPLS 

symbolic-path-name : rsvp 

constraints:            

   cost            : TE_COST 

   bandwidth       : 0.0

onos>