hostname r4
interface lo
 ip router isis 1
 isis passive
!
interface r4-eth0
 ip router isis 1
 isis network point-to-point
!
interface r4-eth1
 ip router isis 1
 isis network point-to-point
!
interface r4-eth2
 ip router isis 1
 isis network point-to-point
!
interface r4-eth3
 ip router isis 1
 isis network point-to-point
!
router isis 1
 net 49.0123.6452.0004.00
 is-type level-2-only
 mpls-te on
 segment-routing on
 segment-routing global-block 16000 17000
 segment-routing node-msd 10
 segment-routing prefix 192.0.2.4/32 index 4
!