案例配置拓扑
配置需求
1、 按照拓扑完成基础IPv6配置；
2、 在R1、R2、R3配置OSPFv3，R1和R2直连网段及R1的lo 0口属于OSPFv3 area 1，R2、R3直连网段及R3的lo 0口属于OSPFv3 area 0；
3、 在R1、R2配置EIGRP for IPv6，R1和R2直连网段及R1的lo 10口属于EIGRP；
4、 在R2上将EIGRP for IPv6重分步到OSPFv3；
5、 在R1和R2上开启OSPFv3 Prefix-suppression，验证OSPFv3 Prefix-suppression会抑制哪些LSA；
案例配置思路
1.根据拓扑配置IP地址
2.在R1 R2 R3上面配置OSPFV3
3.在R1 R2 上配置EIGRP for ipv6
4在R2上将EIGRP for IPv6 重分步到OSPFv3
5.在R1、R2上配置OSPFv3 Prefix-suppression
R1
router ospfv3 100
router-id 1.1.1.1
!
address-family ipv6 unicast
prefix-suppression
exit-address-family
R2
router ospfv3 100
router-id 2.2.2.2
!
address-family ipv6 unicast
prefix-suppression
exit-address-family
案例检验结果
1.验证OSPFV3邻居
R2#show ipv6 ospf neighbor
OSPFv3 Router with ID (2.2.2.2) (Process ID 100)
Neighbor ID Pri State Dead Time Interface ID Interface
3.3.3.3 1 FULL/DR 00:00:34 4 f0/1
1.1.1.1 1 FULL/BDR 00:00:31 3 f0/0
2.验证OSPFv3的prefix-suppression
R3#show ipv6 route ospf
IPv6 Routing Table - default - 6 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP
H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea
IS - ISIS summary, D - EIGRP, EX - EIGRP external, NM - NEMO
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, ls - LISP site
ld - LISP dyn-EID, a - Application
OI 2001:1::1/128 [110/20]
via FE80::A8BB:CCFF:FE00:210, Ethernet0/1
OE2 2001:10::10/128 [110/20]
via FE80::A8BB:CCFF:FE00:210, Ethernet0/1
R3只能学习到R1的loopback 0和loopback 10的IPv6地址。
因为默认只抑制3类LSA，对于loopbacks, secondary IP addresses, and passive interfaces 将不被抑制。 所以R3能够学习到R1的loopback 0网段信息
因为R1的loopback 10网段是通过重分步进入OSPFv3，属于5类LSA，所以也没有被抑制。
R2#show ipv6 ospf database inter-area prefix
OSPFv3 Router with ID (2.2.2.2) (Process ID 100)
Inter Area Prefix Link States (Area 0)
LS age: 1215
LS Type: Inter Area Prefix Links
Link State ID: 2
Advertising Router: 2.2.2.2
LS Seq Number: 80000001
Checksum: 0xCCAA
Length: 44
Metric: 10
Prefix Address: 2001:1::1
/在R2的OSPFv3 database中，OSPFv3 3类LSA中未包含R1 R2直连网段2001:12::/64/
Prefix Length: 128, Options: None
