Example:
! The outputs for Router A are shown here. Similarly, view the outputs on Router C.
RP/0/0/CPU0:RouterA# show route
Tue Oct 13 13:58:59.289 PST
Codes: C - connected, S - static, R - RIP, B - BGP, (>) - Diversion path
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, E - EGP
i - ISIS, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, su - IS-IS summary null, * - candidate default
U - per-user static route, o - ODR, L - local, G - DAGR, l - LISP
A - access/subscriber, a - Application route
M - mobile route, (!) - FRR Backup path
Gateway of last resort is not set
L 1.1.1.1/32 is directly connected, 00:07:21, Loopback0
i L1 2.2.2.2/32 [115/73] via 11.11.11.2, 00:00:50, GigabitEthernet0/0/0/0
i L1 3.3.3.3/32 [115/83] via 11.11.11.2, 00:00:50, GigabitEthernet0/0/0/0
C 11.11.11.0/24 is directly connected, 00:07:20, GigabitEthernet0/0/0/0
L 11.11.11.1/32 is directly connected, 00:07:20, GigabitEthernet0/0/0/0
i L1 13.13.13.0/24 [115/73] via 11.11.11.2, 00:00:50, GigabitEthernet0/0/0/0
i L1 15.15.15.0/24 [115/83] via 11.11.11.2, 00:00:50, GigabitEthernet0/0/0/0
RP/0/0/CPU0:RouterA# show route ipv6
Tue Oct 13 14:00:06.616 PST
Codes: C - connected, S - static, R - RIP, B - BGP, (>) - Diversion path
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, E - EGP
i - ISIS, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, su - IS-IS summary null, * - candidate default
U - per-user static route, o - ODR, L - local, G - DAGR, l - LISP
A - access/subscriber, a - Application route
M - mobile route, (!) - FRR Backup path
Gateway of last resort is not set
L 1::1/128 is directly connected,
00:08:28, Loopback0
i L1 2::2/128
[115/16777224] via fe80::e9:45ff:fe22:5326, 00:01:58, GigabitEthernet0/0/0/0
i L1 3::3/128
[115/16777234] via fe80::e9:45ff:fe22:5326, 00:01:58, GigabitEthernet0/0/0/0
C 11:11:11::/64 is directly connected,
00:08:27, GigabitEthernet0/0/0/0
L 11:11:11::1/128 is directly connected,
00:08:27, GigabitEthernet0/0/0/0
i L1 13:13:13::/64
[115/16777224] via fe80::e9:45ff:fe22:5326, 00:01:58, GigabitEthernet0/0/0/0
i L1 15:15:15::/64
[115/16777234] via fe80::e9:45ff:fe22:5326, 00:01:58, GigabitEthernet0/0/0/0
The output verifies the impact of maximum metric configuration in the routing table: [115/73] and [115/83]
IS-IS has been successfully configured to handle router overload without setting the overload bit.
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
401
Implementing IS-IS
Example: Configuring IS-IS To Handle Router Overload