Router BGP-LS Configurations

Below are bgp-ls example router configurations for IOS-XR and Junos.

IOS XR 5.2.2 (or greater)

Link to vendor docs: IOS XR

Enable IGP to BGP distribution:

For ISIS :

router isis <name>
 distribute bgp-ls
 address-family ipv4 unicast
    mpls traffic-eng level-2-only
 !
! 
 
For OSPF:

router ospf <name>
distribute bgp-ls
!

Enable link-state address family to advertise bgp-ls routes:

router bgp <nnnn>
 !
address-family link-state link-state 
 neighbor <d.d.d.d>
  address-family link-state link-state
 !
!

JunOS 14.2 (or greater)

Link to vendor docs: JunOS/Overview

Link to vendor docs: JunOS/Example

Configure rsvp to initialize TE:

protocols {
    rsvp {
        interface all;
        interface fxp0.0 {
            disable;
        }
    }

Import IGP routes to Lsdist.0 table:

protocols {
    mpls {
        traffic-engineering {
            database {
                import {
                    policy nlri2bgp;
                }
            }
        }
        interface all;
        interface fxp0.0 {
            disable;
        }
    }
}
policy-options {
    policy-statement nlri2bgp {
        term 1 {
            from family traffic-engineering;
            then accept;
        }
    }
}

Turn on bgp-ls address family and export bgp-ls routes:

protocols {
    bgp {
        group <tttt> {
            neighbor d.d.d.d {
                family traffic-engineering {
                    unicast;
                }
                export nlri2bgp;
            }
         }
     }
}