CSR3
router isis 1
 net 49.0000.0000.0003.00
 is-type level-1
 metric-style wide
 !
 address-family ipv6
  multi-topology
 exit-address-family
!
interface Loopback0
 ip router isis 1
interface GigabitEthernet1
 ip router isis 1
interface GigabitEthernet2
 ip router isis 1


CSR5
router isis 1
 net 49.0000.0000.0005.00
 is-type level-1
 metric-style wide
 !
 address-family ipv6
  multi-topology
 exit-address-family
!
interface Loopback0
 ip router isis 1
interface GigabitEthernet1
 ip router isis 1


CSR6
router isis 1
 net 49.0000.0000.0006.00
 is-type level-1
 metric-style wide
 !
 address-family ipv6
  multi-topology
 exit-address-family
!
interface Loopback0
 ip router isis 1
!
interface GigabitEthernet2
 ip router isis 1


XR14
router isis 1
 is-type level-1
 net 49.0000.0000.0014.00
 address-family ipv4 unicast
  metric-style wide
 !
 interface Loopback0
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
 interface GigabitEthernet0/0/0/0
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
 interface GigabitEthernet0/0/0/1
  address-family ipv4 unicast
  !
  address-family ipv6 unicast



RP/0/0/CPU0:XR14#show route isis
Fri May  8 23:01:38.504 UTC

i L1 10.10.0.5/32 [115/30] via 10.40.143.3, 00:00:14, GigabitEthernet0/0/0/0
i L1 10.40.0.3/32 [115/20] via 10.40.143.3, 00:00:21, GigabitEthernet0/0/0/0
i L1 10.40.0.6/32 [115/20] via 10.40.146.6, 00:00:21, GigabitEthernet0/0/0/1
i L1 10.40.35.0/24 [115/20] via 10.40.143.3, 00:00:21, GigabitEthernet0/0/0/0



​CSR3#show ip route isis 
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       a - application route
       + - replicated route, % - next hop override, p - overrides from PfR

Gateway of last resort is not set

      10.0.0.0/8 is variably subnetted, 9 subnets, 2 masks
i L1     10.10.0.5/32 [115/20] via 10.40.35.5, 00:04:13, GigabitEthernet2
i L1     10.40.0.6/32 [115/30] via 10.40.143.14, 00:00:29, GigabitEthernet1
i L1     10.40.0.14/32 [115/20] via 10.40.143.14, 00:00:36, GigabitEthernet1
i L1     10.40.146.0/24 [115/20] via 10.40.143.14, 00:00:36, GigabitEthernet1