l On the MCE, the RIP process numbers used for importing the VPN routes of the CE3 should
differ from that of the CE4.
Procedure
Step 1 Run OSPF on routers of the backbone network to implement internetworking.
The detailed configuration procedure is not mentioned here.
After this configuration, the PEs can learn the loopback1 address of each other.
Consider PE2 as an example:
<PE2> display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 7 Routes : 7
Destination/Mask Proto Pre Cost Flags NextHop Interface
1.1.1.9/32 OSPF 10 2 D 172.1.1.1 Ethernet1/0/0
2.2.2.9/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
172.1.1.0/24 Direct 0 0 D 172.1.1.2 Ethernet1/0/0
172.1.1.1/32 Direct 0 0 D 172.1.1.1 Ethernet1/0/0
172.1.1.2/32 Direct 0 0 D 127.0.0.1 InLoopBack0
Step 2 Enable MPLS and MPLS LDP for PEs to set up an LSP between PEs.
The detailed configuration procedure is not mentioned here. After this configuration, run the
display mpls ldp session command on the PE. You can find that the session status of the MPLS
LDP between the PEs is "operational".
Consider PE2 as an example:
<PE2> display mpls ldp session
LDP Session(s) in Public Network
Codes: LAM(Label Advertisement Mode), SsnAge Unit(DDDD:HH:MM)
A '*' before a session means the session is being deleted.
--------------------------------------------------------------------------
PeerID Status LAM SsnRole SsnAge KASent/Rcv
--------------------------------------------------------------------------
1.1.1.9:0 Operational DU Active 0000:00:04 17/17
--------------------------------------------------------------------------
TOTAL: 1 session(s) Found.
Step 3 Configure VPN instances for PEs, and connect CE1 and CE2 to PE1, and MCE to PE2.
# Configure PE1.
<PE1> system-view
[PE1] ip vpn-instance vpna
[PE1-vpn-instance-vpna] ipv4-family
[PE1-vpn-instance-vpna-af-ipv4] route-distinguisher 100:1
[PE1-vpn-instance-vpna-af-ipv4] vpn-target 111:1 both
[PE1-vpn-instance-vpna-af-ipv4] quit
[PE1-vpn-instance-vpna] quit
[PE1] ip vpn-instance vpnb
[PE1-vpn-instance-vpnb] ipv4-family
[PE1-vpn-instance-vpnb-af-ipv4] route-distinguisher 100:2
[PE1-vpn-instance-vpnb-af-ipv4] vpn-target 222:2 both
[PE1-vpn-instance-vpnb-af-ipv4] quit
[PE1-vpn-instance-vpnb] quit
[PE1] interface ethernet1/0/0
[PE1-Ethernet1/0/0] ip binding vpn-instance vpna
[PE1-Ethernet1/0/0] ip address 10.1.1.2 24
[PE1-Ethernet1/0/0] quit
Huawei AR1200 Series Enterprise Routers
Configuration Guide - VPN 3 BGP MPLS IP VPN Configuration
Issue 01 (2012-04-20) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
218
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