MPLS VPN实验配置和抓包

实验需求：

R1,R3为IBGP关系;R2不配BGP。（MPLS）
R6可以与R4相通；R7可以与R5相通。

实验拓扑图：

配置思路：

1.配置公网地址
2.公网启用ospf
3.配置MPLS域
4.配置 配置PE与PE间MP-BPG邻居关系
5.配置用户网络
6.配置MPLS VPN
7.将BGP和OSPF进行双向重发布

配置公网地址、公网启用ospf，配置MPLS域

R1上配置：

#
interface GigabitEthernet0/0/2
 ip address 10.1.12.1 255.255.255.0 
 mpls
 mpls ldp
#
interface NULL0
#
interface LoopBack0
 ip address 10.1.1.1 255.255.255.0 
#
#
ospf 1 router-id 1.1.1.1 
 area 0.0.0.0 
  network 10.1.1.1 0.0.0.0 
  network 10.1.12.0 0.0.0.255 
#
mpls lsr-id 10.1.1.1
mpls
#
mpls ldp
#

R2配置

#
interface GigabitEthernet0/0/0
 ip address 10.1.12.2 255.255.255.0 
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 ip address 10.1.23.1 255.255.255.0 
 mpls
 mpls ldp
#

interface LoopBack0
 ip address 10.2.2.2 255.255.255.0 
#
ospf 1 router-id 2.2.2.2 
 area 0.0.0.0 
  network 10.1.12.0 0.0.0.255 
  network 10.1.23.0 0.0.0.255 
  network 10.2.2.2 0.0.0.0 
#
#
mpls lsr-id 10.2.2.2
mpls
#
mpls ldp
#

R3配置与R1配置类似

配置PE与PE间MP-BPG邻居关系（MG-BGP用于传递RT值）

R1配置：

#
bgp 1
 router-id 1.1.1.1
 peer 10.3.3.3 as-number 1 
 peer 10.3.3.3 connect-interface LoopBack0
 #
 ipv4-family unicast
  undo synchronization
  peer 10.3.3.3 enable
 # 
 ipv4-family vpnv4
  policy vpn-target
  peer 10.3.3.3 enable
  peer 10.3.3.3 advertise-community
 #

R3与R1类似

配置MPLS VPN

用户端正常启用OSPF进程
PE端使用VRF技术
R1配置：

#
ip vpn-instance a
 ipv4-family
  route-distinguisher 1:1
  vpn-target 100:1 export-extcommunity
  vpn-target 100:1 import-extcommunity
#
ip vpn-instance b
 ipv4-family
  route-distinguisher 2:2
  vpn-target 200:2 export-extcommunity
  vpn-target 200:2 import-extcommunity
#
#
interface GigabitEthernet0/0/0
 ip binding vpn-instance a
 ip address 10.1.14.2 255.255.255.0 
#
interface GigabitEthernet0/0/1
 ip binding vpn-instance b
 ip address 10.1.15.2 255.255.255.0 
#
#
ospf 2 router-id 1.1.1.1 vpn-instance a
 import-route bgp
 area 0.0.0.0 
  network 10.1.14.0 0.0.0.255 
#
ospf 3 router-id 1.1.1.1 vpn-instance b
 import-route bgp
 area 0.0.0.0 
  network 10.1.15.0 0.0.0.255 
#

将BGP和OSPF进行双向重发布

R1配置：

#
 ipv4-family vpn-instance a 
  import-route ospf 2
 #
 ipv4-family vpn-instance b 
  import-route ospf 3
#
#
ospf 2 router-id 1.1.1.1 vpn-instance a
 import-route bgp

#
ospf 3 router-id 1.1.1.1 vpn-instance b
 import-route bgp

测试：

附：
R1全部配置：

<R1>dis current-configuration 
[V200R003C00]
#
 sysname R1
#
 snmp-agent local-engineid 800007DB03000000000000
 snmp-agent 
#
 clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load flash:/portalpage.zip
#
 drop illegal-mac alarm
#
 wlan ac-global carrier id other ac id 0
#
 set cpu-usage threshold 80 restore 75
#
ip vpn-instance a
 ipv4-family
  route-distinguisher 1:1
  vpn-target 100:1 export-extcommunity
  vpn-target 100:1 import-extcommunity
#
ip vpn-instance b
 ipv4-family
  route-distinguisher 2:2
  vpn-target 200:2 export-extcommunity
  vpn-target 200:2 import-extcommunity
#
mpls lsr-id 10.1.1.1
mpls
#
mpls ldp
#
#
aaa 
 authentication-scheme default
 authorization-scheme default
 accounting-scheme default
 domain default 
 domain default_admin 
 local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$
 local-user admin service-type http
#
firewall zone Local
 priority 15
#
interface GigabitEthernet0/0/0
 ip binding vpn-instance a
 ip address 10.1.14.2 255.255.255.0 
#
interface GigabitEthernet0/0/1
 ip binding vpn-instance b
 ip address 10.1.15.2 255.255.255.0 
#
interface GigabitEthernet0/0/2
 ip address 10.1.12.1 255.255.255.0 
 mpls
 mpls ldp
#
interface NULL0
#
interface LoopBack0
 ip address 10.1.1.1 255.255.255.0 
#
bgp 1
 router-id 1.1.1.1
 peer 10.3.3.3 as-number 1 
 peer 10.3.3.3 connect-interface LoopBack0
 #
 ipv4-family unicast
  undo synchronization
  peer 10.3.3.3 enable
 # 
 ipv4-family vpnv4
  policy vpn-target
  peer 10.3.3.3 enable
  peer 10.3.3.3 advertise-community
 #
 ipv4-family vpn-instance a 
  import-route ospf 2
 #
 ipv4-family vpn-instance b 
  import-route ospf 3
#
ospf 1 router-id 1.1.1.1 
 area 0.0.0.0 
  network 10.1.1.1 0.0.0.0 
  network 10.1.12.0 0.0.0.255 
#
ospf 2 router-id 1.1.1.1 vpn-instance a
 import-route bgp
 area 0.0.0.0 
  network 10.1.14.0 0.0.0.255 
#
ospf 3 router-id 1.1.1.1 vpn-instance b
 import-route bgp
 area 0.0.0.0 
  network 10.1.15.0 0.0.0.255 
#
user-interface con 0
 authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return