3Com S7906E Configuration Manual page 1612

Figure 1-26 Configure an OSPF sham link (on switches)
Device Interface
CE 1 Vlan-int12
Vlan-int11
PE 1 Loop0
Loop1
Vlan-int12
Vlan-int2
Switch A Vlan-int11
Vlan-int22
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
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
Destination/Mask Proto
20.1.1.0/24 Direct 0
20.1.1.1/32 Direct 0
20.1.1.2/32 Direct 0
30.1.1.0/24 OSPF
100.1.1.0/24 Direct 0
100.1.1.1/32 Direct 0
120.1.1.0/24 OSPF
127.0.0.0/8 Direct 0
127.0.0.1/32 Direct 0
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
IP address
100.1.1.1/24
20.1.1.1/24
1.1.1.9/32
3.3.3.3/32
100.1.1.2/24
10.1.1.1/24
20.1.1.2/24
30.1.1.1/24
Figure 1-26. The detailed configuration steps are omitted.
Routes : 9
Pre Cost NextHop
0 20.1.1.1
0 127.0.0.1
0 20.1.1.2
10 3124 20.1.1.2
0 100.1.1.1
0 127.0.0.1
10 3125 20.1.1.2
0 127.0.0.1
0 127.0.0.1
1-97
Device Interface
CE 2 Vlan-int11
Vlan-int12
PE 2 Loop0
Loop1
Vlan-int11
Vlan-int2
Interface
Vlan11
InLoop0
Vlan11
Vlan11
Vlan12
InLoop0
Vlan11
InLoop0
InLoop0
IP address
120.1.1.1/24
30.1.1.2/24
2.2.2.9/32
5.5.5.5/32
120.1.1.2/24
10.1.1.2/24