學習回顧——OSPF路由協定(0x3B)-OSPFv3 NSSA區域配置示例

如圖所示，将Area1配置為NSSA區域，同時将AR1配置為ASBR，引入外部路由(靜态路由)，其使引入的靜态路由資訊可正确的在整個AS内傳播。

1) 配置端口IPv6位址并啟用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

#

【驗證配置-檢視AR-2的OSPFv3鄰居狀态】

<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>

【驗證配置-檢視AR-3的OSPFv3鄰居狀态】

<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>

【驗證配置-檢視AR-4的OSPFv3路由表資訊】AR-4上除了自己有一套直連路由外，還有本例中全部3條連接配接在其他裝置上的非直連網段路由。

<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區域，并引入靜态路由

【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】檢視OSPFv3路由表資訊，此時會按到因為配置區域1位NSSA區域後新增的一條預設路由。

[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上配置并引入靜态路由】

#

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上驗證】

[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]