如图所示,将Area1配置为NSSA区域,同时将AR1配置为ASBR,引入外部路由(静态路由),其使引入的静态路由信息可正确的在整个AS内传播。
1) 配置端口IPv6地址并启用OSPFv3
【AR-1配置】
ipv6
ospfv3 1
router-id 1.1.1.1
#
interface GigabitEthernet0/0/0
ipv6 enable
ipv6 address 2001:1::2/64
ospfv3 1 area 0.0.0.1
#
#
interface GigabitEthernet0/0/1
ipv6 enable
ipv6 address 2001:3::1/64
ospfv3 1 area 0.0.0.1
【AR-2配置】
ipv6
#
ospfv3 1
router-id 2.2.2.2
#
interface GigabitEthernet0/0/0
ipv6 enable
ipv6 address 2001::1/64
ospfv3 1 area 0.0.0.0
#
interface GigabitEthernet0/0/1
ipv6 enable
ipv6 address 2001:1::1/64
ospfv3 1 area 0.0.0.1
#
【AR-2配置】
ipv6
#
ospfv3 1
router-id 3.3.3.3
#
interface GigabitEthernet0/0/0
ipv6 enable
ipv6 address 2001::2/64
ospfv3 1 area 0.0.0.0
#
interface GigabitEthernet0/0/1
ipv6 enable
ipv6 address 2001:2::1/64
ospfv3 1 area 0.0.0.2
#
【AR-3配置】
ipv6
#
ospfv3 1
router-id 3.3.3.3
#
interface GigabitEthernet0/0/0
ipv6 enable
ipv6 address 2001::2/64
ospfv3 1 area 0.0.0.0
#
interface GigabitEthernet0/0/1
ipv6 enable
ipv6 address 2001:2::1/64
ospfv3 1 area 0.0.0.2
#
【AR-4配置】
ipv6
#
#
ospfv3 1
router-id 4.4.4.4
#
interface GigabitEthernet0/0/0
ipv6 enable
ipv6 address 2001:2::2/64
ospfv3 1 area 0.0.0.2
#
【验证配置-查看AR-2的OSPFv3邻居状态】
<AR-2>display ospfv3 peer
OSPFv3 Process (1)
OSPFv3 Area (0.0.0.0)
Neighbor ID Pri State Dead Time Interface Instance ID
3.3.3.3 1 Full/Backup 00:00:38 GE0/0/0 0
OSPFv3 Area (0.0.0.1)
Neighbor ID Pri State Dead Time Interface Instance ID
1.1.1.1 1 Full/DR 00:00:40 GE0/0/1 0
<AR-2>
【验证配置-查看AR-3的OSPFv3邻居状态】
<AR-3>display ospfv3 peer
OSPFv3 Process (1)
OSPFv3 Area (0.0.0.0)
Neighbor ID Pri State Dead Time Interface Instance ID
2.2.2.2 1 Full/DR 00:00:37 GE0/0/0 0
OSPFv3 Area (0.0.0.2)
Neighbor ID Pri State Dead Time Interface Instance ID
4.4.4.4 1 Full/Backup 00:00:34 GE0/0/1 0
<AR-3>
【验证配置-查看AR-4的OSPFv3路由表信息】AR-4上除了自己有一套直连路由外,还有本例中全部3条连接在其他设备上的非直连网段路由。
<AR-4>display ospfv3 routing
Codes : E2 - Type 2 External, E1 - Type 1 External, IA - Inter-Area,
N - NSSA, U - Uninstalled
OSPFv3 Process (1)
Destination Metric Next-hop
IA 2001::/64 2 viaFE80::2E0:FCFF:FE68:4C5A,GigabitEthernet0/0/0
IA 2001:1::/64 3 viaFE80::2E0:FCFF:FE68:4C5A,GigabitEthernet0/0/0
2001:2::/64 1 directly connected, GigabitEthernet0/0/0
IA 2001:3::/64 4 viaFE80::2E0:FCFF:FE68:4C5A,GigabitEthernet0/0/0
<AR-4>
2) 将Area配置NSSA区域,并引入静态路由
【在AR-1上配置将Area 1配置成NSSA】
#
ospfv3 1
router-id 1.1.1.1
area 0.0.0.1
nssa
#
【在AR-2上配置将Area 1配置成NSSA】
#
ospfv3 1
router-id 1.1.1.1
area 0.0.0.1
nssa
#
【在AR1上】查看OSPFv3路由表信息,此时会按到因为配置区域1位NSSA区域后新增的一条缺省路由。
[AR-1]display ospfv3 routing
Codes : E2 - Type 2 External, E1 - Type 1 External, IA - Inter-Area,
N - NSSA, U - Uninstalled
OSPFv3 Process (1)
Destination Metric Next-hop
E2 ::/0 1 N viaFE80::2E0:FCFF:FE89:5BD5,GigabitEthernet0/0/0
IA 2001::/64 2 via FE80::2E0:FCFF:FE89:5BD5,GigabitEthernet0/0/0
2001:1::/64 1 directly connected, GigabitEthernet0/0/0
IA 2001:2::/64 3 via FE80::2E0:FCFF:FE89:5BD5,GigabitEthernet0/0/0
2001:3::/64 1 directly connected, GigabitEthernet0/0/1
[AR-1]
【在AR1上配置并引入静态路由】
#
ospfv3 1
router-id 1.1.1.1
import-route static
area 0.0.0.1
nssa
#
ipv6 route-static 1234:: 64 NULL0
【在AR4上验证】
[AR-4]dis ospfv3 routing
Codes : E2 - Type 2 External, E1 - Type 1 External, IA - Inter-Area,
N - NSSA, U - Uninstalled
OSPFv3 Process (1)
Destination Metric Next-hop
E2 1234::/64 1 via FE80::2E0:FCFF:FE68:4C5A,GigabitEthernet0/0/0
IA 2001::/64 2 via FE80::2E0:FCFF:FE68:4C5A,GigabitEthernet0/0/0
IA 2001:1::/64 3 via FE80::2E0:FCFF:FE68:4C5A,GigabitEthernet0/0/0
2001:2::/64 1 directly connected, GigabitEthernet0/0/0
IA 2001:3::/64 4 via FE80::2E0:FCFF:FE68:4C5A,GigabitEthernet0/0/0
[AR-4]