实验7（MPLS实验）

实验要求

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MPLSVPN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单独拉一根网线保证可以访问公网，R7可以访问R2/R3/R4环回 

实验布置

1，划分IP地址

R2

[r2]int g0/0/2
[r2-GigabitEthernet0/0/2]ip a 23.0.0.1 24
[r2-GigabitEthernet0/0/2]int lo0
[r2-LoopBack0]ip a 2.2.2.2 24

R3

[r3]int g0/0/0
[r3-GigabitEthernet0/0/0]ip a 23.0.0.2 24
[r3-GigabitEthernet0/0/0]int g0/0/1
[r3-GigabitEthernet0/0/1]ip a 34.0.0.1 24
[r3-GigabitEthernet0/0/1]int lo0
[r3-LoopBack0]ip a 3.3.3.3 24

R4

[r4]int g0/0/0
[r4-GigabitEthernet0/0/0]ip a 34.0.0.2 24
[r4-GigabitEthernet0/0/0]int g4/0/0
[r4-GigabitEthernet4/0/0]ip a 47.0.0.2 24
[r4-GigabitEthernet4/0/0]int lo0
[r4-LoopBack0]ip a 4.4.4.4 24

R7

[r7]int g0/0/1
[r7-GigabitEthernet0/0/1]ip a 47.0.0.1 24

 

2，配置ospf

R2

[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]a 0
[r2-ospf-1-area-0.0.0.0]network 23.0.0.0 0.0.0.255

R3   
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]a 0
[r3-ospf-1-area-0.0.0.0]network 23.0.0.0 0.0.0.255
[r3-ospf-1-area-0.0.0.0]network 34.0.0.0 0.0.0.255 
[r3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0

R4

[r4]ospf 1 router-id 4.4.4.4
[r4-ospf-1]a 0  
[r4-ospf-1-area-0.0.0.0]network 34.0.0.0 0.0.0.255
[r4-ospf-1-area-0.0.0.0]network 47.0.0.0 0.0.0.255
[r4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0

 

3，搭建MPLS 

R2

[r2]mpls lsr-id 2.2.2.2
[r2]mpls 
Info: Mpls starting, please wait... OK!
[r2]mpls ldp 
[r2]int g0/0/2
[r2-GigabitEthernet0/0/2]mpls 
[r2-GigabitEthernet0/0/2]mpls ldp 

R3

[r3]mpls lsr-id 3.3.3.3   
[r3]mpls 
Info: Mpls starting, please wait... OK!
[r3]mpls ldp 
[r3]int g0/0/0  
[r3-GigabitEthernet0/0/0]mpls   
[r3-GigabitEthernet0/0/0]mpls ldp 
[r3]int g0/0/1  
[r3-GigabitEthernet0/0/1]mpls 
[r3-GigabitEthernet0/0/1]mpls ldp 

R4

[r4]mpls lsr-id 4.4.4.4 
[r4]mpls 
Info: Mpls starting, please wait... OK!  
[r4]mpls ldp 
[r4]int g0/0/0
[r4-GigabitEthernet0/0/0]mpls  
[r4-GigabitEthernet0/0/0]mpls ldp 

4，在r2 r3两台边界路由器上建立通道

R2

[r2]ip vpn-instance a                                                        客户A流量的通道
[r2-vpn-instance-a]route-distinguisher 100:100 
[r2-vpn-instance-a-af-ipv4]vpn-target 100:1 both 
 IVT Assignment result: 
Info: VPN-Target assignment is successful.
 EVT Assignment result: 
Info: VPN-Target assignment is successful.
[r2]int g0/0/0 
[r2-GigabitEthernet0/0/0]ip binding vpn-instance a
Info: All IPv4 related configurations on this interface are removed!
Info: All IPv6 related configurations on this interface are removed!

[r2]ip vpn-instance b                                                         客户B流量的通道
[r2-vpn-instance-b]route-distinguisher 200:200  
[r2-vpn-instance-b-af-ipv4]vpn-target 200:1 both 
 IVT Assignment result: 
Info: VPN-Target assignment is successful.
 EVT Assignment result: 
Info: VPN-Target assignment is successful.
[r2]int g0/0/1  
[r2-GigabitEthernet0/0/1]ip binding vpn-instance b
Info: All IPv4 related configurations on this interface are removed!
Info: All IPv6 related configurations on this interface are removed!

[r2]int g0/0/0
[r2-GigabitEthernet0/0/0]ip a 192.168.2.2 24
[r2-GigabitEthernet0/0/0]int g0/0/1
[r2-GigabitEthernet0/0/1]ip a 172.16.2.2 24 

R4

[r4]ip vpn-instance a                                                        客户A流量的通道
[r4-vpn-instance-a]route-distinguisher 100:100
[r4-vpn-instance-a-af-ipv4]vpn-target 100:1 both 
 IVT Assignment result: 
Info: VPN-Target assignment is successful.
 EVT Assignment result: 
Info: VPN-Target assignment is successful.
[r4]int g0/0/1
[r4-GigabitEthernet0/0/1]ip binding vpn-instance a
Info: All IPv4 related configurations on this interface are removed!
Info: All IPv6 related configurations on this interface are removed!

[r4]ip vpn-instance b                                                        客户B流量的通道
[r4-vpn-instance-b]route-distinguisher 200:200    
[r4-vpn-instance-b-af-ipv4]vpn-target 200:1 both 
 IVT Assignment result: 
Info: VPN-Target assignment is successful.
 EVT Assignment result: 
Info: VPN-Target assignment is successful.
[r4]int g0/0/2  
[r4-GigabitEthernet0/0/2]ip binding vpn-instance b
Info: All IPv4 related configurations on this interface are removed!
Info: All IPv6 related configurations on this interface are removed!

[r4]int g0/0/1
[r4-GigabitEthernet0/0/1]ip a 192.168.3.2 24
[r4]int g0/0/2
[r4-GigabitEthernet0/0/2]ip a 172.16.3.2 24

5，配置私网IP地址和环回

R1

[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip a 192.168.2.1 24
[r1-GigabitEthernet0/0/0]int lo0
[r1-LoopBack0]ip a 192.168.1.1 24

 

R5

[r5]int g 0/0/0
[r5-GigabitEthernet0/0/0]ip a 192.168.3.1 24
Jul 27 2022 15:16:46-08:00 r5 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
on the interface GigabitEthernet0/0/0 has entered the UP state. 
[r5-GigabitEthernet0/0/0]int lo0
[r5-LoopBack0]ip a 192.168.4.1 24

 

R6

[r6]int g 0/0/0
[r6-GigabitEthernet0/0/0]ip a 172.16.2.1 24
Jul 27 2022 15:16:09-08:00 r6 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
on the interface GigabitEthernet0/0/0 has entered the UP state. 
[r6-GigabitEthernet0/0/0]int lo0
[r6-LoopBack0]ip a 172.16.1.1 24

 

R7

[r7]int g 0/0/0
[r7-GigabitEthernet0/0/0]ip a 172.168.3.1 24
Jul 27 2022 15:17:22-08:00 r7 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
on the interface GigabitEthernet0/0/0 has entered the UP state. 
[r7-GigabitEthernet0/0/0]int lo0
[r7-LoopBack0]ip a 172.16.4.1 24

6，配置静态路由

R1

[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

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

R5

[r5]ip route-static 192.168.1.0 24 192.168.3.2   
[r5]ip route-static 192.168.2.0 24 192.168.3.2

R4

[r4]ip route-static vpn-instance a 192.168.4.0 24 192.168.3.1
 

7，配置动态路由

R6

[r6]rip 1
[r6-rip-1]v 2
[r6-rip-1]network 172.16.0.0

R2

[r2]rip 1 vpn-instance b
[r2-rip-1]v 2   
[r2-rip-1]network 172.16.0.0

R7

[r7]ospf 1 router-id 7.7.7.7
[r7-ospf-1]a 0
[r7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

R4

[r4]ospf 2 vpn-instance b router-id 4.4.4.4
[r4-ospf-2]a 0    
[r4-ospf-2-area-0.0.0.0]network 172.16.0.0 0.0.255.255
 

8，R2与R4建立BGP关系

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  
[r2-bgp]ipv4-family vpnv4   
[r2-bgp-af-vpnv4]peer 4.4.4.4 enable 

 

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 

9，发布路由

R2

[r2-bgp]ipv4-family vpn-instance a                 将R1静态与直连重发布
[r2-bgp-a]import-route static 
[r2-bgp-a]import-route direct 

 

R4

[r4-bgp]ipv4-family vpn-instance a                 将R5静态与直连重发布
[r4-bgp-a]import-route static 
[r4-bgp-a]import-route direct 

 

R2

[r2-bgp]ipv4-family vpn-instance b                 将RIP与BGP进行双向重发布
[r2-bgp-b]import-route rip 1
[r2]rip   
[r2-rip-1]import-route bgp 

 

R4

[r4-bgp]ipv4-family vpn-instance b                 将BGP与OSPF进行双向重发布
[r4-bgp-b]import-route ospf 2
[r4]ospf 2
[r4-ospf-2]import-route bgp 

 

10、在R7上配置缺省路由
 

[r7]ip route-static 0.0.0.0 0 47.0.0.2
 

11，验证