1、route-map解析
2、实验拓扑
3、实验配置
R1配置
interface Serial0/0
ip address 12.1.1.1 255.255.255.0
interface Serial0/1
ip address 13.1.1.1 255.255.255.0
interface Serial0/2
ip address 14.1.1.1 255.255.255.0
router eigrp 90
redistribute ospf 110 metric 1500 100 255 1 1500
network 14.1.1.0 0.0.0.255
no auto-summary
router ospf 110
router-id 1.1.1.1
log-adjacency-changes
redistribute rip subnets
network 13.1.1.0 0.0.0.255 area 0
router rip
version 2
network 12.0.0.0
no auto-summary
R2配置
interface Loopback0
ip address 2.2.2.2 255.255.255.0
interface Loopback22
ip address 22.22.22.22 255.255.255.0
interface Loopback222
ip address 222.222.222.222 255.255.255.0
interface Serial0/0
ip address 12.1.1.2 255.255.255.0
router rip
version 2
network 2.0.0.0
network 22.0.0.0
network 222.222.222.0
network 12.0.0.0
no auto-summary
R3配置
interface Loopback0
ip address 3.3.3.3 255.255.255.0
interface Serial0/0
ip address 13.1.1.3 255.255.255.0
router ospf 110
router-id 3.3.3.3
log-adjacency-changes
network 3.3.3.0 0.0.0.255 area 0
network 13.1.1.0 0.0.0.255 area 0
R4配置
interface Loopback0
ip address 4.4.4.4 255.255.255.0
interface Serial0/0
ip address 14.1.1.4 255.255.255.0
router eigrp 90
network 4.4.4.0 0.0.0.255
network 14.1.1.0 0.0.0.255
no auto-summary
此时R3学到4外部路由，我们希望作如下修改。
222.222.222.0/24 修改为E1
2.2.2.0/24 修改Default Seed Metrics为10
22.22.22.0/24 deny掉，permit any
R1配置
ip prefix-list 222 seq 5 permit 222.222.222.0/24
access-list 2 permit 2.2.2.0 0.0.0.255
access-list 22 permit 22.22.22.0 0.0.0.255
route-map RM permit 10
match ip address prefix-list 222
set metric-type type-1
route-map RM permit 20
match ip address 2
set metric 10
route-map RM deny 30
match ip address 22
route-map RM permit 40
router ospf 110
redistribute rip subnets route-map RM
可以看到结果与我们的需求一致。