MPLS综合实验

 1.实验要求及其拓扑图：

2.划分好IP 的拓扑图

3.实验分析：

        1，R1和R5是客户A两个站点的CE设备，R6和R7是客户b两个站点的CE设备。通过MPLS VPN骨干网络分别连接不同客户的不同站点

        2，R1和R5采用静态路由的方式传递私网路由;R6通过RIP将私网路由传递给PE设备;R7通过OSPF将私网路由传递给PE设备

        3，R7单独拉一根网线葆证可以访问公网，R7可以访问R2/R3/R4环回

      1.进行公网IP的配置同时创建环回接口（这里仅展示R2）

[r2]int g 0/0/2
[r2-GigabitEthernet0/0/2]ip ad 23.0.0.1 24
Aug  1 2022 15:33:31-08:00 r2 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
on the interface GigabitEthernet0/0/2 has entered the UP state. 
[r2-GigabitEthernet0/0/2]int l0
[r2-LoopBack0]ip ad 2.2.2.2 24
[r2-LoopBack0]q

查看ip配置情况

         2.用OSPF来宣告路由

R2 ospf配置
[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]a 0
[r2-ospf-1-area-0.0.0.0]net 2.2.2.2 0.0.0.0
[r2-ospf-1-area-0.0.0.0]net 23.0.0.0 0.0.0.255


R3 ospf 配置
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]a 0
[r3-ospf-1-area-0.0.0.0]net 3.3.3.3 0.0.0.0
[r3-ospf-1-area-0.0.0.0]net 23.0.0.0 0.0.0.255
[r3-ospf-1-area-0.0.0.0]net 34.0.0.0 0.0.


R4 ospf 配置
[r4]ospf 1 router-id 4.4.4.4
[r4-ospf-1]a 0
[r4-ospf-1-area-0.0.0.0]net 4.4.4.4 0.0.0.0
[r4-ospf-1-area-0.0.0.0]net 34.0.0.0 0.0.0.255

查看用ospf获取到的路由（仅展示R4）

         3.创建MPLS

[r3]mp lsr-id 3.3.3.3    ---mpls的router-id，要为本地设备的真实ip地址，且邻居可达
[r3]mpls                ---全局开启mpls协议
Info: Mpls starting, please wait... OK!
[r3-mpls]mpls ldp         ---激活LDP协议
接口开启且激活
[r3-mpls-ldp]int g 0/0/0
[r3-GigabitEthernet0/0/0]mpl
[r3-GigabitEthernet0/0/0]mpl ldp
[r3-GigabitEthernet0/0/0]int g 0/0/1
[r3-GigabitEthernet0/0/1]mpl
[r3-GigabitEthernet0/0/1]mpl ld

注：每个接口都需要

        4.配置MPLS-VPN（R4也需配置）

[r2]ip v	
[r2]ip vpn-instance a            ---创建名为a的vrf空间
[r2-vpn-instance-a]route-distinguisher 100:100	---配置RD值
[r2-vpn-instance-a-af-ipv4]vpn-target 100:1 both   ---配置PT值
[r2-vpn-instance-a-af-ipv4]q
[r2-vpn-instance-a]q
[r2]ip v	
[r2]ip vpn-instance b	
[r2-vpn-instance-b]route-distinguisher 200:200
[r2-vpn-instance-b-af-ipv4]vpn-target 200:1 both
[r2-vpn-instance-b-af-ipv4]q
[r2-vpn-instance-b]q
[r2]int g 0/0/0
[r2-GigabitEthernet0/0/0]ip binding vpn-instance a    ---关联到vrf空间
[r2-GigabitEthernet0/0/0]ip ad 192.168.2.2 24    ---配置私有ip地址
[r2-GigabitEthernet0/0/0]int g 0/0/1
[r2-GigabitEthernet0/0/1]ip binding vpn-instance b
[r2-GigabitEthernet0/0/1]ip ad 172.16.2.2 24

        5.私网地址根据划分好的IP配置即可，该处省略

        6.BGP建邻

R2
[r2]bgp 1
[r2-bgp]router-id 2.2.2.2
[r2-bgp]peer 4.4.4.4 as 1
[r2-bgp]peer 4.4.4.4 connect-interface LoopBack 0 ----选择环回建邻	
[r2-bgp]ipv4-family vpnv4
[r2-bgp-af-vpnv4]peer 4.4.4.4 en	

R4:
[r4]bgp 1
[r4-bgp]router-id 4.4.4.4
[r4-bgp]peer 2.2.2.2 as 1
[r4-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[r4-bgp]ipv4-family vpnv4
[r4-bgp-af-vpnv4]peer 2.2.2.2 enable

        7.静态路由配置

[r1]ip route-static 192.168.3.0 24 192.168.2.2
[r1]ip route-static 192.168.4.0 24 192.168.2.2

[r2]ip route-static vpn-instance a 192.168.1.0 24 192.168.2.1

[r4]ip route-static vpn-instance a 192.168.4.0 24 192.168.3.2

[r5]ip route-static 192.168.1.0 24 192.168.3.1
[r5]ip route-static 192.168.2.0 24 192.168.3.1

        8.进入BGP中发布路由

[r2-bgp]ipv4-family vpn-instance a	
[r2-bgp-a]import-route direct 	
[r2-bgp-a]import-route static 	


[r4-bgp]ipv4-family vpn-instance a
[r4-bgp-a]import-route d
[r4-bgp-a]import-route s

        9.R6和R7分别进行RIP,和OSPF配置，并进行重发布（IGP配置略，只展示重发布）

[r2]bgp 1
[r2-bgp]ipv4-family vpn-instance b
[r2-bgp-b]import-route rip 1
[r2-bgp-b]q
[r2-bgp]q
[r2]rip	
[r2-rip-1]import-route bgp

[r4]bgp 1
[r4-bgp]ipv4-family vpn-instance b	
[r4-bgp-b]import-route ospf 2
[r4-bgp-b]q
[r4-bgp]q
[r4]ospf 2
[r4-ospf-2]import-route bgp

         10.配置缺省，使R7可以访问R2/R3/R4环回。

[r7]ip route-static 0.0.0.0 0 47.0.0.1

4.实验结果验证：