[系统运维] MPLS综合实验

[r2]int l0
[r2-LoopBack0]ip add 2.2.2.2 24
[r2-LoopBack0]int g0/0/2
[r2-GigabitEthernet0/0/2]ip add 23.0.0.1 24

[r3]int l0
[r3-LoopBack0]ip add 3.3.3.3 24
[r3-LoopBack0]int g0/0/0
[r3-GigabitEthernet0/0/0]ip add 23.0.0.2 24
[r3-GigabitEthernet0/0/0]int g0/0/1
[r3-GigabitEthernet0/0/1]ip add 34.0.0.1 24

[r4]int l0
[r4-LoopBack0]ip add 4.4.4.4 24
[r4-LoopBack0]int g0/0/0
[r4-GigabitEthernet0/0/0]ip ad 34.0.0.2 24 
[r4-GigabitEthernet0/0/0]int g4/0/0
[r4-GigabitEthernet4/0/0]ip add 47.0.0.1  24

启动IGP协议

这里我们选用ospf

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

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

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

此时骨干已通

激活MPLS和LDP

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


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

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

此时LDP对等体已成功建立

VRF空间的创建

[r2]ip vpn-instance a
[r2-vpn-instance-a]route-distinguisher 100:1 
[r2-vpn-instance-a-af-ipv4]vpn-target 100:1 export-extcommunity 	
[r2-vpn-instance-a-af-ipv4]vpn-target 100:2 import-extcommunity 
[r2-vpn-instance-a-af-ipv4]q
[r2-vpn-instance-a]q	
[r2]ip vpn-instance b	
[r2-vpn-instance-b]route-distinguisher 200:1
[r2-vpn-instance-b-af-ipv4]vpn-target 200:1 export-extcommunity 
[r2-vpn-instance-b-af-ipv4]vpn-target 200:2 import-extcommunity 


[r4]ip vpn-instance a
[r4-vpn-instance-a]route-distinguisher 100:1 
[r4-vpn-instance-a-af-ipv4]vpn-target 100:2 export-extcommunity 
[r4-vpn-instance-a-af-ipv4]vpn-target 100:1 import-extcommunity 
[r4-vpn-instance-a-af-ipv4]q
[r4-vpn-instance-a]q	
[r4]ip vpn-instance b
[r4-vpn-instance-b]route-distinguisher 200:1
[r4-vpn-instance-b-af-ipv4]vpn-target 200:2 export-extcommunity 
[r4-vpn-instance-b-af-ipv4]vpn-target 200:1 import-extcommunity

两者的出入站RT值需要对应相同

将接口划入到VRF空间中

[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-GigabitEthernet0/0/0]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!



[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-GigabitEthernet0/0/1]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!

此时我们便可以对剩余的这些接口配置IP地址

[r2-GigabitEthernet0/0/1]ip add 192.168.4.2 24  
[r2-GigabitEthernet0/0/1]int g0/0/0
[r2-GigabitEthernet0/0/0]ip add 192.168.2.2 24


[r4-GigabitEthernet0/0/2]ip add 192.168.6.2 24
[r4-GigabitEthernet0/0/0]int g0/0/1
[r4-GigabitEthernet0/0/1]ip add 192.168.3.1 24

R1和R5通过静态路由在CE和PE上配置

[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

建立MP-BGP

首先R2和R4建立IBGP

[r2]bgp 1
[r2-bgp]router-id 2.2.2.2
[r2-bgp]peer 4.4.4.4 as-number 1	
[r2-bgp]peer 4.4.4.4 connect-interface LoopBack 0
[r2-bgp]peer 4.4.4.4 next-hop-local

[r4]bgp 1
[r4-bgp]router-id 4.4.4.4
[r4-bgp]peer 2.2.2.2 as-number 1	
[r4-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[r4-bgp]peer 2.2.2.2 next-hop-local

在BGP基础上建立MP-BGP

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


[r4-bgp]ipv4-family vpnv4	
[r4-bgp-af-vpnv4]peer 2.2.2.2 enable

此时建立完成

对站点R1和R5进行配置

首先把IP给配置好

[r1]int l0
[r1-LoopBack0]ip add 192.168.1.1 24
[r1-LoopBack0]int g0/0/0
[r1-GigabitEthernet0/0/0]ip add 192.168.2.1 24

[r5]int l0
[r5-LoopBack0]ip add 192.168.4.1 24
[r5-LoopBack0]int g0/0/0
[r5-GigabitEthernet0/0/0]ip add 192.168.3.2 24

在VRF空间中发布路由信息

[r2]bgp 1
[r2-bgp]ipv4-family vpn-instance a
[r2-bgp-a]import-route direct 
[r2-bgp-a]import-route static 

[r4]bgp 1
[r4-bgp]ipv4-family vpn-instance a	
[r4-bgp-a]import-route direct 
[r4-bgp-a]import-route static

对站点R6和R7进行配置

首先把IP给配置好

[r6]int l0
[r6-LoopBack0]ip add 192.168.5.1 24
[r6-LoopBack0]int g0/0/0
[r6-GigabitEthernet0/0/0]ip add 192.168.24.1 24

[r7]int l0
[r7-LoopBack0]ip add 192.168.7.1 24
[r7-LoopBack0]int g0/0/0
[r7-GigabitEthernet0/0/0]ip add 192.168.6.1 24
[r7-GigabitEthernet0/0/1]ip add 47.0.0.2 24

CE和PE设备之间动态路由传递

R6和R2配置RIP?

[r2]rip 1 vpn-instance b
[r2-rip-1]v 2
[r2-rip-1]network 192.168.4.0

[r6]rip 1
[r6-rip-1]v 2
[r6-rip-1]network 192.168.4.0
[r6-rip-1]network 192.168.5.0

R7和R4配置ospf

[r4]ospf 2 vpn-instance b router-id 4.4.4.4
[r4-ospf-2]area 0
[r4-ospf-2-area-0.0.0.0]network 192.168.6.0 0.0.0.25

[r7]ospf 2 router-id 7.7.7.7
[r7-ospf-2]a 0
[r7-ospf-2-area-0.0.0.0]network 192.168.6.0 0.0.0.255
[r7-ospf-2-area-0.0.0.0]network 192.168.7.0 0.0.0.255

双向重发布的建立

[r2]bgp 1
[r2-bgp]ipv4-family vpn-instance b	
[r2-bgp-b]import-route rip 1
[r2]rip 1
[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]ospf 2
[r4-ospf-2]import-route bgp

此时便建立成功

最后写一条静态路由来使得R7可以和R234的环回相通