R2511-HP MSR Router Series MPLS Configuration Guide(V5)

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Configure tunneling policies on the PEs and specify the tunnel type for VPN traffic as GRE.
Figure 77 Network diagram
Device Interface IP address Device Interface IP address
CE 1 Eth1/1 2001:1::1/96 P POS5/0 172.1.1.2/24
PE 1 Loop0 1.1.1.9/32 POS5/1 172.2.1.1/24
Eth1/1 2001:1::2/96 PE 2 Loop0 2.2.2.9/32
POS5/1 172.1.1.1/24 Eth1/1 2001:2::2/96
Tunnel0 20.1.1.1/24 POS5/0 172.2.1.2/24
CE 2 Eth1/1 2001:2::1/96 Tunnel0 20.1.1.2/24
Configuration procedure
1. Configure an IGP on the MPLS backbone to ensure IP connectivity among the PEs and the P router:
This example uses OSPF. (Details not shown.)
# Execute the display ospf peer command to verify that OSPF adjacencies in Full state have been
established between PE 1, P, and PE 2. Execute the display ip routing-table command to verify that
the PEs have learned the routes to the loopback interfaces of each other. (Details not shown.)
2. Configure basic MPLS on the PEs:
# Configure PE 1.
<PE1> system-view
[PE1] mpls lsr-id 1.1.1.9
[PE1] mpls
[PE1-mpls] quit
# Configure PE 2.
<PE2> system-view
[PE2] mpls lsr-id 2.2.2.9
[PE2] mpls
[PE2-mpls] quit
3. Configure VPN instances on the PEs to allow CE access, and apply tunneling policies to the VPN
instances to use a GRE tunnel for VPN packet forwarding:
# Configure PE 1.