■IS-ISのNeighborを確立するのに基本的な設定
主な設定は以下のとおり
router isis ←IS-IS のプロセス有効
net 49.0000.0000.0001.0000.00 ←エリアの指定
interface GigabitEthernet1/0
ip router isis ←Gi1/0 IPv4でIS-ISを有効
ipv6 router isis ←Gi1/0 IPv6でIS-ISを有効
interface Loopback0
ip router isis ←Lo0 IPv4でIS-ISを有効
interface Loopback6
ipv6 router isis ←Lo6 IPv6でIS-ISを有効
■Configとトポロジーは以下
■R1
interface Loopback0
ip address 1.1.1.1 255.255.255.255
ip router isis
!
interface Loopback6
ipv6 address 1::1/128
ipv6 router isis
router isis
net 49.0000.0000.0001.0000.00
interface GigabitEthernet1/0
ip address 12.12.12.1 255.255.255.0
ip router isis
negotiation auto
ipv6 address 12::1/64
ipv6 router isis
■R2
interface Loopback0
ip address 2.2.2.2 255.255.255.255
ip router isis
!
interface Loopback6
ipv6 address 2::2/128
ipv6 router isis
router isis
net 49.0000.0000.0002.0000.00
interface GigabitEthernet1/0
ip address 12.12.12.2 255.255.255.0
ip router isis
negotiation auto
ipv6 address 12::2/64
ipv6 router isis
■Neighbor状態やRIBエントリーは以下のとおり
■R1
R1#show clns neighbors detail
System Id Interface SNPA State Holdtime Type Protocol
R2 Gi1/0 ca02.3338.001c Up 9 L1L2 IS-IS
Area Address(es): 49
IP Address(es): 12.12.12.2*
IPv6 Address(es): FE80::C802:33FF:FE38:1C
Uptime: 00:17:45
NSF capable
Interface name: GigabitEthernet1/0
R1#show ip route
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
+ – replicated route, % – next hop override
Gateway of last resort is not set
1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
2.0.0.0/32 is subnetted, 1 subnets
i L1 2.2.2.2 [115/20] via 12.12.12.2, 00:08:35, GigabitEthernet1/0
12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 12.12.12.0/24 is directly connected, GigabitEthernet1/0
L 12.12.12.1/32 is directly connected, GigabitEthernet1/0
R1#show ipv6 route
IPv6 Routing Table – default – 5 entries
Codes: C – Connected, L – Local, S – Static, U – Per-user Static route
B – BGP, R – RIP, H – NHRP, I1 – ISIS L1
I2 – ISIS L2, IA – ISIS interarea, IS – ISIS summary, D – EIGRP
EX – EIGRP external, ND – ND Default, NDp – ND Prefix, DCE – Destination
NDr – Redirect, O – OSPF Intra, OI – OSPF Inter, OE1 – OSPF ext 1
OE2 – OSPF ext 2, ON1 – OSPF NSSA ext 1, ON2 – OSPF NSSA ext 2, l – LISP
LC 1::1/128 [0/0]
via Loopback6, receive
I1 2::2/128 [115/20]
via FE80::C802:33FF:FE38:1C, GigabitEthernet1/0
C 12::/64 [0/0]
via GigabitEthernet1/0, directly connected
L 12::1/128 [0/0]
via GigabitEthernet1/0, receive
L FF00::/8 [0/0]
via Null0, receive
■R2
R2#show clns neighbors detail
System Id Interface SNPA State Holdtime Type Protocol
R1 Gi1/0 ca01.4624.001c Up 29 L1L2 IS-IS
Area Address(es): 49
IP Address(es): 12.12.12.1*
IPv6 Address(es): FE80::C801:46FF:FE24:1C
Uptime: 00:17:46
NSF capable
Interface name: GigabitEthernet1/0
R2#show ip route
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
+ – replicated route, % – next hop override
Gateway of last resort is not set
1.0.0.0/32 is subnetted, 1 subnets
i L1 1.1.1.1 [115/20] via 12.12.12.1, 00:08:27, GigabitEthernet1/0
2.0.0.0/32 is subnetted, 1 subnets
C 2.2.2.2 is directly connected, Loopback0
12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 12.12.12.0/24 is directly connected, GigabitEthernet1/0
L 12.12.12.2/32 is directly connected, GigabitEthernet1/0
R2#show ipv6 route
IPv6 Routing Table – default – 5 entries
Codes: C – Connected, L – Local, S – Static, U – Per-user Static route
B – BGP, R – RIP, H – NHRP, I1 – ISIS L1
I2 – ISIS L2, IA – ISIS interarea, IS – ISIS summary, D – EIGRP
EX – EIGRP external, ND – ND Default, NDp – ND Prefix, DCE – Destination
NDr – Redirect, O – OSPF Intra, OI – OSPF Inter, OE1 – OSPF ext 1
OE2 – OSPF ext 2, ON1 – OSPF NSSA ext 1, ON2 – OSPF NSSA ext 2, l – LISP
I1 1::1/128 [115/20]
via FE80::C801:46FF:FE24:1C, GigabitEthernet1/0
LC 2::2/128 [0/0]
via Loopback6, receive
C 12::/64 [0/0]
via GigabitEthernet1/0, directly connected
L 12::2/128 [0/0]
via GigabitEthernet1/0, receive
L FF00::/8 [0/0]
via Null0, receive
