一.实验拓扑
二.实验要求
1.分部办公路由正常情况走办公路由器,出现异常走业务路由。
2.分部业务路由正常情况走业务路由器,出现异常走办公路由。
三.实验配置思路
1.R1-R4作为核心层,启用OSPF进程1,设置为 area 0.
2.R3-R7作为汇聚层,启用OSPF进程2,设置为 area 1.
3.在R3和R4做OSPF重发布,采用router-policy路由策略,干涉OSPF选路。
4.在R3上抓取总部办公路由,加大COST值,在进程2引入进程1时调用,
在R4上抓取分部办公路由,加大COST值,在进程1引入进程2时调用。
5.R4上操作类同。
6.修改环回OSPF类型为broadcast,修改接口链路COST值,避免出现负载分担。
四.实验配置(部分)
1.R3_OSPF配置
ospf 1 router-id 3.3.3.3
import-route ospf 2 type 1 route-policy fbyewu
area 0.0.0.0
network 10.1.13.0 0.0.0.255
network 10.1.34.0 0.0.0.255
#
ospf 2 router-id 3.3.3.3
import-route ospf 1 route-policy zbyewu
area 0.0.0.1
network 10.1.35.0 0.0.0.255
network 10.1.36.0 0.0.0.255
- R3_路由策略
route-policy zbyewu permit node 10
if-match ip-prefix zbyewu
apply cost 10
#
route-policy zbyewu permit node 20
#
route-policy fbyewu permit node 10
if-match ip-prefix fbyewu
apply cost 10
#
route-policy fbyewu permit node 20
#
ip ip-prefix zbyewu index 10 permit 10.1.2.0 24
ip ip-prefix zbyewu index 20 permit 10.1.4.0 24
ip ip-prefix fbyewu index 10 permit 10.2.2.0 24
ip ip-prefix fbyewu index 20 permit 10.2.4.0 24
3.R4_OSPF配置
ospf 1 router-id 4.4.4.4
import-route ospf 2 type 1 route-policy fbbg
area 0.0.0.0
network 10.1.24.0 0.0.0.255
network 10.1.34.0 0.0.0.255
#
ospf 2 router-id 4.4.4.4
import-route ospf 1 route-policy zbbg
area 0.0.0.1
network 10.1.45.0 0.0.0.255
network 10.1.47.0 0.0.0.255
4.R4_ 路由策略
#
route-policy zbbg permit node 10
if-match ip-prefix zbbg
apply cost 10
#
route-policy zbbg permit node 20
#
route-policy fbbg permit node 10
if-match ip-prefix fbbg
apply cost 10
#
route-policy fbbg permit node 20
#
ip ip-prefix zbbg index 10 permit 10.1.1.0 24
ip ip-prefix zbbg index 20 permit 10.1.3.0 24
ip ip-prefix fbbg index 10 permit 10.2.1.0 24
ip ip-prefix fbbg index 20 permit 10.2.3.0 24