IPv6系列小实验之2：初识 OSPFv3 实例

OSPFv3在OSPFv2的基础上该井了不少，我个人感觉，跟ISIS又走近了不少啊！从发布的方式（接口下），然后是从基于子网走向基于链路的SPF，然后多实例（ISIS原来就可以在同一台路由器上配置多个区域），呵呵
下面一个小实验，主要反映两个新特性，链路不在同一个子网可以形成邻居关系，还有一个就是实例的应用。
拓扑如下：





R1:

ipv6 unicast-routing
interface FastEthernet0/0
no ip address
duplex auto
speed auto
ipv6 address 2001:101:101:1::1/64
ipv6 ospf 10 area 0 instance 1 # 默认情况是在实例0
!
ipv6 router ospf 10
router-id 1.1.1.1 #OSPFv3强制性使用RID，OSPFv2里也要养成手动设置RID的好习惯
log-adjacency-changes
!

R2:
ipv6 unicast-routing
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
ipv6 address 2001:202:202:1::2/64
ipv6 ospf 10 area 0 instance 1
!
ipv6 router ospf 10
router-id 2.2.2.2
log-adjacency-changes

R3:
ipv6 unicast-routing
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
ipv6 address 2001:303:303:1::3/64
ipv6 ospf 10 area 0 instance 3
!
ipv6 router ospf 10
router-id 3.3.3.3
log-adjacency-changes

R4:
ipv6 unicast-routing
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
ipv6 address 2001:404:404:1::4/64
ipv6 ospf 10 area 0 instance 3
!
ipv6 router ospf 10
router-id 4.4.4.4
log-adjacency-changes

看看邻居关系吧
R1#sh ipv os neighbor

Neighbor ID Pri State Dead Time Interface ID Interface
2.2.2.2 1 FULL/BDR 00:00:35 4 FastEthernet0/0

R3#sh ipv os neighbor

Neighbor ID Pri State Dead Time Interface ID Interface
4.4.4.4 1 FULL/BDR 00:00:30 4 FastEthernet0/0

R1与R2形成了邻居关系，R3与R4形成了邻居关系。这四个接口都不在同一个网段。这个心特性不少专门针对OSPFv3的，对于所有IPv6路由协议都是一样的。本文出自 “海阔天空” 博客，转载请与作者联系！