MPLS setup experiment

1. Experimental topics

2.IP Divide

R2,R3,R4 Used between OSPF

R7 Use default pointing to the public network

[r7]ip route-static 0.0.0.0 0 47.1.1.1

among R2 and R4 establish BGP link

3.MPLS Turn on

3.1.R2

[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

3.2.R3

 [r3]mpls lsr-id 3.3.3.3

[r3]mpls

Info: Mpls starting, please wait... OK! 

[r3-mpls]mpls ldp

[r3-mpls-ldp]int g0/0/2

[r3-GigabitEthernet0/0/2]mpls

[r3-GigabitEthernet0/0/2]mpls ldp

[r3-GigabitEthernet0/0/2]int g0/0/0

[r3-GigabitEthernet0/0/0]mpls

[r3-GigabitEthernet0/0/0]mpls ldp 

3.3.R4

 [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

4.VRF Space

4.1.R2

b1 Space , It's for R1 Used by

[r2]ip vpn-instance b1

[r2-vpn-instance-b1]ipv4-family

[r2-vpn-instance-b1-af-ipv4]route-distinguisher 1:1

[r2-vpn-instance-b1-af-ipv4]vpn-target 1:1

[r2]int g0/0/0

[r2-GigabitEthernet0/0/0]ip binding vpn-instance b1

Info: All IPv4 related configurations on this interface are removed!

Info: All IPv6 related configurations on this interface are removed!

a1 Space is for R6 The use of

[r2]ip vpn-instance a1

 [r2-vpn-instance-a1]ipv4-family

[r2-vpn-instance-a1-af-ipv4]route-distinguisher 2:2 

[r2-vpn-instance-a1-af-ipv4]vpn-target 2:2

[r2-GigabitEthernet0/0/0]int g0/0/1

[r2-GigabitEthernet0/0/1]ip binding vpn-instance a1

Info: All IPv4 related configurations on this interface are removed!

Info: All IPv6 related configurations on this interface are removed!

After configuration, you can configure the corresponding interface ip

You can configure the same ip Instead of reporting mistakes

[r2-GigabitEthernet0/0/0]ip add 192.168.2.2 24

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

4.2.R4

b2 Space , It's for R5 Used by , And configure IP

[r4]ip vpn-instance b2

[r4-vpn-instance-b2]ipv4-family

[r4-vpn-instance-b2-af-ipv4]route-distinguisher 1:1
[r4-vpn-instance-b2-af-ipv4]vpn-target 1:1

[r4]int g0/0/1
[r4-GigabitEthernet0/0/1]ip binding vpn-instance b2
Info: All IPv4 related configurations on this interface are removed!
Info: All IPv6 related configurations on this interface are removed!

[r4-GigabitEthernet0/0/1]ip add 192.168.3.1 24

a2 Space is for R7 The use of , And configure IP

[r4]ip vpn-instance a2
[r4-vpn-instance-a2]ipv4-family
[r4-vpn-instance-a2-af-ipv4]route-distinguisher 2:2
[r4-vpn-instance-a2-af-ipv4]vpn-target 2:2

[r4]int g4/0/0  
[r4-GigabitEthernet4/0/0]ip binding vpn-instance a2
Info: All IPv4 related configurations on this interface are removed!
Info: All IPv6 related configurations on this interface are removed!

[r4-GigabitEthernet4/0/0]ip add 192.168.3.1 24

5.BGP To configure

 5.1.R2

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

 5.2.R4

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

Configure after configuration R1 R7 R6 R5 Loop back and interface IP

6. To configure RIP,OSPF And re Exchange

6.1.R6 and R2 RIP

[r2]rip 1 vpn-instance a1
[r2-rip-1]ver 2 
[r2-rip-1]network 192.168.2.0

[r6]rip 1
[r6-rip-1]ver 2
[r6-rip-1]network 192.168.1.0    
[r6-rip-1]network 192.168.2.0

6.2.R4 and R7 OSPF

[r4]ospf 2 vpn-instance a2
[r4-ospf-2]area 0   
[r4-ospf-2-area-0.0.0.0]network 192.168.3.1 0.0.0.0

[r7]ospf 1 router-id 7.7.7.7 
[r7-ospf-1]area 0
[r7-ospf-1-area-0.0.0.0]network 192.168.3.2 0.0.0.0
[r7-ospf-1-area-0.0.0.0]network 192.168.4.2 0.0.0.0

6.3. Two way republication

RIP and BGP Conduct two-way republishing

[r2]rip 1 vpn-instance a1  
[r2-rip-1]import-route bgp 

[r2]bgp 1
[r2-bgp]ipv4-family vpn-instance a1
[r2-bgp-a1]import-route rip 1

OSPF and BGP Conduct two-way republishing

[r4-bgp]ipv4-family vpn-instance a2    
[r4-bgp-a2]import-route ospf 2

[r4]ospf 2 vpn-instance a2
[r4-ospf-2]import-route bgp

R6 Learned 192.168.4.2 Equal route

  And can communicate

7. Static configuration

  7.1.R1 and R2

[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 b1 192.168.1.0 24 192.168.2.1
[r2]bgp 1
[r2-bgp]ipv4-family vpn-instance b1 
[r2-bgp-b1]import-route static   
[r2-bgp-b1]import-route direct

 7.2.R4 and R5 

[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

[r4]ip route-static vpn-instance b2 192.168.4.0 24 192.168.3.2
[r4]bgp 1
[r4-bgp]ipv4-family vpn-instance b2    
[r4-bgp-b2]import-route static   
[r4-bgp-b2]import-route direct

Then you can get through