H3C Technologies H3C SR8800 - Manual (Page 352)

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POS2/1/2 20.1.1.1/24 POS2/1/2 30.1.1.2/24
PE 1 Loop0 1.1.1.9/32 PE 2 Loop0 2.2.2.9/32
Loop1 3.3.3.3/32 Loop1 5.5.5.5/32
GE4/1/1 100.1.1.2/24 GE4/1/1 120.1.1.2/24
POS2/1/2 10.1.1.1/24 POS2/1/1 10.1.1.2/24
Router A POS2/1/1 30.1.1.1/24
POS2/1/2 20.1.1.2/24
Configuration procedure
1. Configure OSPF on the customer networks
Configure conventional OSPF on CE 1, Router A, and CE 2 to advertise segment addresses of the
interfaces as shown in Figure 83 . (Details not shown)
After completing the configurations, CE 1 and CE 2 can learn the OSPF route to the GigabitEthernet
interface of each other. The following takes CE 1 as an example:
display ip routing-table
Routing Tables: Public
Destinations : 9 Routes : 9
Destination/Mask Proto Pre Cost NextHop Interface
20.1.1.0/24 Direct 0 0 20.1.1.1 POS2/1/2
20.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
20.1.1.2/32 Direct 0 0 20.1.1.2 POS2/1/2
30.1.1.0/24 OSPF 10 3124 20.1.1.2 POS2/1/2
100.1.1.0/24 Direct 0 0 100.1.1.1 GE4/1/1
100.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
120.1.1.0/24 OSPF 10 3125 20.1.1.2 POS2/1/2
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
2. Configure MPLS L3VPN on the backbone
# Configure basic MPLS and MPLS LDP on PE 1 to establish LDP LSPs.
system-view
[PE1] interface loopback 0
[PE1-LoopBack0] ip address 1.1.1.9 32
[PE1-LoopBack0] quit
[PE1] mpls lsr-id 1.1.1.9
[PE1] mpls
[PE1-mpls] quit
[PE1] mpls ldp
[PE1-mpls-ldp] quit
[PE1] interface POS 2/1/2
[PE1-POS2/1/2] ip address 10.1.1.1 24
[PE1-POS2/1/2] mpls
[PE1-POS2/1/2] mpls ldp
[PE1-POS2/1/2] quit
# Configure PE 1 to take PE 2 as the MP-IBGP peer.
[PE1] bgp 100
[PE1-bgp] peer 2.2.2.9 as-number 100