Basically this repo contains ExaBGP 3.4 from http://github.com/Exa-Networks/exabgp 3.4 branch with some experimental modification of :

• MP_REACH_NLRI
  • adding decoder for AFI 16388 and SAFI 71
• Adding decoder for Path Attribute TLV 29: Link State

Current status: work in progress.

$ sbin/exabgp exabgp.conf

The following example assumes that exabgp is running on 192.168.1.154 and it has BGP-LS peering with 192.168.1.29

group peer {
    hold-time 180;
    local-as 64900;
    peer-as 64900;
    router-id 192.168.1.154;
    graceful-restart 1200;
    process dump_to_file {
      run ./etc/exabgp/processes/syslog-1.py;
      encoder json;
      receive {
        parsed;
        update;
        neighbor-changes;
      }
    }
    neighbor 192.168.1.29 {
        local-address 192.168.1.154;
    }
}

Either of the following example should work. Just make sure the peering router is using TLV 29 for Link State Path Attributes.

• JunOS

  rw@junos# show policy-options policy-statement TE
  from family traffic-engineering;
  then accept;
  
  [edit]
  rw@junos# show protocols mpls traffic-engineering
  database {
      import {
          policy TE;
      }
  }
  
  [edit]
  rw@junos# show protocols bgp
  group LS {
      type internal;
      family traffic-engineering {
          unicast;
      }
      export TE;
      neighbor 192.168.1.154;
  }
  

• Cisco IOS-XR Version

  router ospf 1
  distribute bgp-ls
  area 0
  network point-to-point
  mpls traffic-eng
  interface Loopback0
  !
  interface GigabitEthernet0/0/0/2.1016
  !
  interface GigabitEthernet0/0/0/2.1416
  !
  !
  mpls traffic-eng router-id Loopback0
  !
  router bgp 64900
  address-family link-state link-state
  !
  neighbor 192.168.1.154
  remote-as 64900
  local address 192.168.1.29
  session-open-mode both
  address-family link-state link-state
  !
  !
  !
  

• Sample Link Data

  Sun, 10 Jul 2016 01:24:08 | INFO     | 33908  | routes        | peer 192.168.1.29 ASN 64900   << UPDATE (26) (330)  attributes origin igp local-preference 100 attribute [ 0x1D 0x80 LinkState:  admin_group 00000000 available_bw{ [0] 1000000000 [1] 1000000000 [2] 1000000000 [3] 1000000000 [4] 1000000000 [5] 1000000000 [6] 1000000000 [7] 1000000000 } ipv4_router_id 10.255.0.14 max_link_bw 1000000000 max_resv_bw 1000000000 metric 1 te_metric 1 ]
  Sun, 10 Jul 2016 01:24:08 | INFO     | 33908  | routes        | peer 192.168.1.29 ASN 64900   << UPDATE (26) nlri  (184) linkstate action update local_node_id 10.255.0.14 local_asn 64900 remote_node_id 10.255.0.13 remote_asn 64900 local_ipv4 10.13.14.2 remote_ipv4 10.13.14.1 nexthop next-hop 192.168.1.29
  

• Sample Node Data

  Sun, 10 Jul 2016 01:24:08 | INFO     | 33908  | routes        | peer 192.168.1.29 ASN 64900   << UPDATE (27) (79)  attributes origin igp local-preference 100 attribute [ 0x1D 0x80 LinkState:  ]
  Sun, 10 Jul 2016 01:24:08 | INFO     | 33908  | routes        | peer 192.168.1.29 ASN 64900   << UPDATE (27) nlri  (148) linkstate action update local_node_id 10.255.0.16 local_asn 64900 remote_node_id  remote_asn  local_ipv4  remote_ipv4  nexthop next-hop 192.168.1.29
  

• IS-IS example
• better error handling
• sample config for latest exabgp version
• clean up
• ...