MPLS experiment

The experimental requirements ：

One . Topology ：

Two . Experimental configuration ：

1. Router bottom layer IP And loopback configuration .
2. stay R2/3/4 Start inside OSPF, Build a public network and MPLS：

<1>. To configure OSPF：

R2 On ：

[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]area 0
[r2-ospf-1-area-0.0.0.0]network 23.1.1.1 0.0.0.0
[r2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0

R3 On ：

[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 23.1.1.2 0.0.0.0
[r3-ospf-1-area-0.0.0.0]network 34.1.1.1 0.0.0.0
[r3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0

R4 On ：

[r4]ospf 1 router-id 4.4.4.4
[r4-ospf-1]area 0
[r4-ospf-1-area-0.0.0.0]network 34.1.1.2 0.0.0.0
[r4-ospf-1-area-0.0.0.0]network 47.1.1.1 0.0.0.0
[r4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0
[r4]ospf 1
[r4-ospf-1]silent-interface g0/0/2  

R7 Configure static routing on ：

[r7]ip route-static 0.0.0.0 0 47.1.1.1

<2> To configure MPLS：

R2 On ：

[r2]mpls lsr-id 2.2.2.2
[r2]mpls
[r2-mpls]mpls ldp
[r2-mpls-ldp]int g0/0/1
[r2-GigabitEthernet0/0/1]mpls
[r2-GigabitEthernet0/0/1]mpls ldp

R3 On ：

[r3]mpls lsr-id 3.3.3.3
[r3]mpls
[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 On ：

[r4]mpls lsr-id 4.4.4.4
[r4]mpls
[r4-mpls]mpls ldp
[r4-mpls-ldp]int g0/0/0
[r4-GigabitEthernet0/0/0]mpls
[r4-GigabitEthernet0/0/0]mpls ldp

<3> To configure BGP：

R2 On ：

[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
[r2-bgp-af-vpnv4]peer 4.4.4.4 adver	
[r2-bgp-af-vpnv4]peer 4.4.4.4 advertise-community

R4 On ：

[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 con	
[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

Static user ：

[r2]ip vpn-instance b
[r2-vpn-instance-b]ipv4-family
[r2-vpn-instance-b-af-ipv4]route-distinguisher 1:1
[r2-vpn-instance-b-af-ipv4]vpn-target 1:1
[r2-vpn-instance-b]int g0/0/0
[r2-GigabitEthernet0/0/0]ip binding vpn-instance b
[r2-GigabitEthernet0/0/0]ip add 192.168.2.2 24

[r1]int lo 0
[r1-LoopBack0]ip add 192.168.1.1 24
[r1-LoopBack0]int g0/0/1
[r1-GigabitEthernet0/0/1]ip add 192.168.2.1 24

[r4]ip vpn-instance b
[r4-vpn-instance-b]ipv4-family
[r4-vpn-instance-b-af-ipv4]route-distinguisher 1:1
[r4-vpn-instance-b-af-ipv4]vpn-target 1:1
[r4-vpn-instance-b]int g0/0/1
[r4-GigabitEthernet0/0/1]ip binding vpn-instance b
[r4-GigabitEthernet0/0/1]ip add 192.168.3.1 24

[r5]int lo 0
[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

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

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

[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

Dynamic users ：

[r2]ip vpn-instance a
[r2-vpn-instance-a]ipv4-family
[r2-vpn-instance-a-af-ipv4]route-distinguisher 2:2
[r2-vpn-instance-a-af-ipv4]vpn-target 2:2
[r2-vpn-instance-a]int g0/0/2
[r2-GigabitEthernet0/0/2]ip binding vpn-instance a
[r2-GigabitEthernet0/0/2]ip add 192.168.2.2 24

[r4]ip vpn-instance a
[r4-vpn-instance-a]ipv4-family
[r4-vpn-instance-a-af-ipv4]route-distinguisher 2:2
[r4-vpn-instance-a-af-ipv4]vpn-target 2:2
[r4-vpn-instance-a]int g0/0/2
[r4-GigabitEthernet0/0/2]ip binding vpn-instance a
[r4-GigabitEthernet0/0/2]ip add 192.168.3.1 24

[r6]int lo 0
[r6-LoopBack0]ip add 192.168.1.1 24
[r6-LoopBack0]int g0/0/2
[r6-GigabitEthernet0/0/2]ip add 192.168.2.1 24

[r7]int lo 0
[r7-LoopBack0]ip add 192.168.4.2 24
[r7-LoopBack0]int g0/0/2
[r7-GigabitEthernet0/0/2]ip add 192.168.3.2 24

[r6]rip 1
[r6-rip-1]version 2
[r6-rip-1]un summary
[r6-rip-1]network 192.168.1.0
[r6-rip-1]network 192.168.2.0

[r2]rip 1 vpn-instance a
[r2-rip-1]version 2
[r2-rip-1]un summary
[r2-rip-1]network 192.168.2.0

[r4]ospf 2 vpn-instance a
[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

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

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