BGP MPLS VPN实验
1. 实验拓扑：
2. MPLS网络部分IGP为OSPF，PE和CE之间运行OSPF，使用BGP分别把H3C和HUAWEI的私网路由传递到各自的私网内部
命令：
MPLS IGP部分
PE1：
Ospf
Area 0
Network 1.1.1.1 0.0.0.0
Network 100.1.1.0 0.0.0.255
P:
Ospf
Area 0
Network 2.2.2.2 0.0.0.0
Netwokr 100.1.1.0 0.0.0.255
Network 100.2.2.0 0.0.0.255
PE2:
Ospf
Area 0
Network 3.3.3.3 0.0.0.0
Network 100.2.2.0 0.0.0.255
MPLS部分：
PE1：
Mpls lsr-id 1.1.1.1
Mpls ldp
Int g0/0
Mpls enable
Mpls ldp enable
P:
Mpls lsr-id 2.2.2.2
Mpls ldp
Int g0/0
Mpls enable
Mpls ldp enable
Int g0/1
Mpls enable
Mpls ldp enable
PE2：
Mpls lsr-id 3.3.3.3
Mpls ldp
Int g0/0
Mpls enable
Mpls ldp enable
配置本地VPN，并绑定私网接口：
PE1：
Ip vpn-instance H3C
Router-distinguisher 100:1
Vpn-target 100:1 export-extcommunity
Vpn-target 100:1 import-extcommunity
Quit
Ip vpn-instance HUAWEI
Router-distinguisher 100:2
Vpn-target 100:2 export-extcommunity
Vpn-target 100:2 import-extcommunity
Quit
Int g0/1
Ip binding vpn-instance H3C
Ip add 110.1.1.1 24
Int g0/2
Ip binding vpn-instance HUAWEI
Ip add 110.3.3.1 24
PE2:与PE1命令完全相同
配置PE与CE间的IGP：
PE1：
Ospf 11 vpn-instance H3C
Area 0
Network 110.1.1.0 0.0.0.255
Ospf 12 vpn-instance HUAWEI
Area 0
Network 110.3.3.0 0.0.0.255
PE2:
Ospf 11 vpn-instance H3C
Area 0
Network 110.2.2.0 0.0.0.255
Ospf 12 vpn-instance HUAWEI
Area 0
Network 110.4.4.0 0.0.0.255
CE1:
Ospf 11
Area 0
Network 192.168.1.0 0.0.0.255
Network 110.1.1.0 0.0.0.255
CE2:
Ospf 11
Area 0
Network 192.168.2.0 0.0.0.255
Network 110.2.2.0 0.0.0.255
CE3:
Ospf 12
Area 0
Network 192.168.1.0 0.0.0.255
Network 110.3.3..0 0.0.0.255
CE4:
Ospf 12
Area 0
Network 192.168.2.0 0.0.0.255
Network 110.4.4.0 0.0.0.255
配置MP-BGP
PE1：
Bgp 100
Peer 3.3.3.3 as 100
Peer 3.3.3.3 connec-interface loopback0
Address vpnv4
Peer 3.3.3.3 enable
PE2:
Bgp 100
Peer 1.1.1.1 as 100
Peer 1.1.1.1 connec-interface loopback0
Address vpnv4
Peer 1.1.1.1 enable
配置BGP和OSPF互相引入
PE1：
Bgp 100
Ip vpn-instance H3C
Address ipv4
Import-route ospf 11
Quit
Quit
Ip vpn-instance HUAWEI
Import-route ospf 12
Ospf 11
Import-route bgp
Ospf 12
Import-route bgp
PE2：与PE1命令完全一样
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