3Com S7902E, Configuration Manual

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Figure 1-26 Configure an OSPF sham link (on switches)
Device Interface IP address Device Interface IP address
CE 1 Vlan-int12 100.1.1.1/24 CE 2 Vlan-int11 120.1.1.1/24
Vlan-int11 20.1.1.1/24 Vlan-int12 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
Vlan-int12 100.1.1.2/24 Vlan-int11 120.1.1.2/24
Vlan-int2 10.1.1.1/24 Vlan-int2 10.1.1.2/24
Switch A Vlan-int11 20.1.1.2/24
Vlan-int22 30.1.1.1/24
Configuration procedure
1) Configure OSPF on the customer networks
Configure conventional OSPF on CE 1, Switch A, and CE 2 to advertise segment addresses of the
interfaces as shown in Figure 1-26 . The detailed configuration steps are omitted.
After completing the configurations, CE 1 and CE 2 should be able to learn the OSPF route to the VLAN
interface 1 of each other. The following takes CE 1 as an example:
<CE1> 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 Vlan11
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 Vlan11
30.1.1.0/24 OSPF 10 3124 20.1.1.2 Vlan11
100.1.1.0/24 Direct 0 0 100.1.1.1 Vlan12
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 Vlan11
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 MPLS basic capability and MPLS LDP on PE 1 to establish LDP LSPs.
<PE1> system-view
[PE1] interface loopback 0
[PE1-LoopBack0] ip address 1.1.1.9 32