3Com S7906E Configuration Manual page 1587

Figure 1-23 Configure carrier's carrier
Device Interface
CE 3 Vlan-int11
PE 3 Loop0
Vlan-int11
Vlan-int12
CE 1 Loop0
Vlan-int12
Vlan-int11
PE 1 Loop0
Vlan-int11
Vlan-int12
Configuration procedure
1) Configure MPLS L3VPN on the Level 1 carrier backbone: start IS-IS as the IGP, enable LDP
between PE 1 and PE 2, and establish MP-IBGP peer relationship between the PEs
# Configure PE 1.
<PE1> system-view
[PE1] interface loopback 0
[PE1-LoopBack0] ip address 3.3.3.9 32
[PE1-LoopBack0] quit
[PE1] mpls lsr-id 3.3.3.9
[PE1] mpls
[PE1-mpls] quit
[PE1] mpls ldp
[PE1-mpls-ldp] quit
[PE1] isis 1
[PE1-isis-1] network-entity 10.0000.0000.0000.0004.00
[PE1-isis-1] quit
[PE1] interface loopback 0
[PE1-LoopBack0] isis enable 1
[PE1-LoopBack0] quit
[PE1] interface vlan-interface 12
IP address Device
100.1.1.1/24 CE 4
1.1.1.9/32 PE 4
100.1.1.2/24
10.1.1.1/24
2.2.2.9/32 CE 2
10.1.1.2/24
11.1.1.1/24
3.3.3.9/32 PE 2
11.1.1.2/24
30.1.1.1/24
1-72
Interface IP address
Vlan-int11 120.1.1.1/24
Loop0 6.6.6.9/32
Vlan-int11 120.1.1.2/24
Vlan-int12 20.1.1.2/24
Loop0 5.5.5.9/32
Vlan-int11 21.1.1.2/24
Vlan-int12 20.1.1.1/24
Loop0 4.4.4.9/32
Vlan-int12 30.1.1.2/24
Vlan-int11 21.1.1.1/24