路由引入，路由过滤，路由策略简单实验

news2024/11/23 22:37:40

实验要求：
1、按照图示配置 IP 地址，R1，R3，R4 上使用 1oopback 口模拟业务网段

2、R1 和 R2 运行 RIPv2，R2，R3和R4 运行 OSPF，各自协议内部互通

3、在 RIP 和 OSPF 间配置双向路由引入，要求除R4上的业务网段以外，其他业务网段路由都引入到对方协议内部

4、使用路由过滤，使R4无法学习到R1 的业务网段路由，要求使用prefix-list进行匹配

5、OSPF 区域中不能出现RIP协议报文

实验拓扑图如图：

实验配置步骤：

1.按要求配置IP地址

R1：

sysname R1
interface GigabitEthernet0/0/0
ip address 100.1.1.1 255.255.255.0
interface LoopBack0
ip address 192.168.0.1 255.255.255.255
interface LoopBack1
ip address 192.168.1.1 255.255.255.255

R2：

sysname R2
interface GigabitEthernet0/0/0
ip address 100.1.1.2 255.255.255.0
interface GigabitEthernet0/0/1
ip address 100.2.2.2 255.255.255.0

R3：

sysname R3
interface GigabitEthernet0/0/0
ip address 100.2.2.3 255.255.255.0
interface GigabitEthernet0/0/1
ip address 100.3.3.3 255.255.255.0
interface LoopBack0
ip address 192.168.2.1 255.255.255.255
interface LoopBack1
ip address 192.168.3.1 255.255.255.255

R4：

sysname R4
interface GigabitEthernet0/0/0
ip address 100.3.3.4 255.255.255.0
interface LoopBack0
ip address 192.168.4.1 255.255.255.255
interface LoopBack1
ip address 192.168.5.1 255.255.255.255

2.配置对应rip和ospf协议并且进行网段宣告

R1：
rip 1
undo summary
version 2
network 100.0.0.0
network 192.168.0.0
network 192.168.1.0

R2：

rip 1
version 2
network 100.0.0.0
ospf 1 router-id 2.2.2.2
area 0.0.0.0
network 100.2.2.0 0.0.0.255

R3：

ospf 1 router-id 3.3.3.3
area 0.0.0.0
network 100.2.2.0 0.0.0.255
network 192.168.2.1 0.0.0.0
network 192.168.3.1 0.0.0.0
area 0.0.0.1
network 10.3.3.0 0.0.0.255

R4：

ospf 1 router-id 4.4.4.4
area 0.0.0.1
network 0.0.0.0 255.255.255.255

3.在R2路由上按要求进行双向路由引入

[R2]rip 1

[R2-rip-1]import-route ospf

[R2-rip-1]q

[R2]ospf 1

[R2-ospf-1]import-route rip

[R2-ospf-1]q

路由引入成功后观察R1和R4路由条目及来源

R1：

[R1]dis ip routing-table protocol rip
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : RIP
Destinations : 6 Routes : 6

RIP routing table status : <Active>
Destinations : 6 Routes : 6

Destination/Mask Proto Pre Cost Flags NextHop Interface

100.2.2.0/24 RIP 100 1 D 100.1.1.2 GigabitEthernet
0/0/0
100.3.3.0/24 RIP 100 1 D 100.1.1.2 GigabitEthernet
0/0/0
192.168.2.1/32 RIP 100 1 D 100.1.1.2 GigabitEthernet
0/0/0
192.168.3.1/32 RIP 100 1 D 100.1.1.2 GigabitEthernet
0/0/0
192.168.4.1/32 RIP 100 1 D 100.1.1.2 GigabitEthernet
0/0/0
192.168.5.1/32 RIP 100 1 D 100.1.1.2 GigabitEthernet
0/0/0

RIP routing table status : <Inactive>
Destinations : 0 Routes : 0

[R4]dis ip routing-table protocol ospf
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : OSPF
Destinations : 6 Routes : 6

OSPF routing table status : <Active>
Destinations : 6 Routes : 6

Destination/Mask Proto Pre Cost Flags NextHop Interface

100.1.1.0/24 O_ASE 150 1 D 100.3.3.3 GigabitEthernet
0/0/0
100.2.2.0/24 OSPF 10 2 D 100.3.3.3 GigabitEthernet
0/0/0
192.168.0.1/32 O_ASE 150 1 D 100.3.3.3 GigabitEthernet
0/0/0
192.168.1.1/32 O_ASE 150 1 D 100.3.3.3 GigabitEthernet
0/0/0
192.168.2.1/32 OSPF 10 1 D 100.3.3.3 GigabitEthernet
0/0/0
192.168.3.1/32 OSPF 10 1 D 100.3.3.3 GigabitEthernet
0/0/0

OSPF routing table status : <Inactive>
Destinations : 0 Routes : 0

观察后发现R1所学到的路由中包括R4的环路，R4也学到了R1的环路路由，也就是实现了要求3中的双向路由引入。

4.下一步进行路由过滤，实现除R4上的业务网段以外，其他业务网段路由都引入到对方协议内部

进行过滤：
[R2]acl 2000
[R2-acl-basic-2000]rule deny source 192.168.4.0 0.0.1.255
[R2-acl-basic-2000]rule permit source 0.0.0.0 255.255.255.255
[R2-acl-basic-2000]q

路由策略
[R2]route-policy yb p
[R2]route-policy yb permit node 10
Info: New Sequence of this List.
[R2-route-policy]if
[R2-route-policy]if-match acl 2000
[R2-route-policy]q

进行路由策略引入

引入[R2]rip 1
[R2-rip-1]import-route ospf 1
[R2-rip-1]import-route ospf 1 route-policy yb
[R2-rip-1]q

测试

测试
[R1]dis ip routing-table protocol rip
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : RIP
Destinations : 4 Routes : 4

RIP routing table status : <Active>
Destinations : 4 Routes : 4

Destination/Mask Proto Pre Cost Flags NextHop Interface

100.2.2.0/24 RIP 100 1 D 100.1.1.2 GigabitEthernet
0/0/0
100.3.3.0/24 RIP 100 1 D 100.1.1.2 GigabitEthernet
0/0/0
192.168.2.1/32 RIP 100 1 D 100.1.1.2 GigabitEthernet
0/0/0
192.168.3.1/32 RIP 100 1 D 100.1.1.2 GigabitEthernet
0/0/0

RIP routing table status : <Inactive>
Destinations : 0 Routes : 0

过滤成功

5.使R4无法学习到R1 的业务网段路由，要求使用prefix-list进行匹配

路由过滤

[R4]ip ip-prefix yb index 10 deny 192.168.0.0 23 less-equal 32
[R4]ip ip-prefix yb index 20 permit 0.0.0.0 0 less-equal 32
[R4-ospf-1]filter-policy ip-prefix yb import
[R4-ospf-1]q

测试

[R4]dis ip routing-table protocol ospf
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : OSPF
Destinations : 4 Routes : 4

OSPF routing table status : <Active>
Destinations : 4 Routes : 4

Destination/Mask Proto Pre Cost Flags NextHop Interface

100.1.1.0/24 O_ASE 150 1 D 100.3.3.3 GigabitEthernet
0/0/0
100.2.2.0/24 OSPF 10 2 D 100.3.3.3 GigabitEthernet
0/0/0
192.168.2.1/32 OSPF 10 1 D 100.3.3.3 GigabitEthernet
0/0/0
192.168.3.1/32 OSPF 10 1 D 100.3.3.3 GigabitEthernet
0/0/0

OSPF routing table status : <Inactive>
Destinations : 0 Routes : 0