H3C Technologies H3C S12500-X Series Switches - Manual (Page 286)

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Configuring an inter-domain multi-segment PW
Network requirements
PE 1 and ASBR 1 belong to AS 100. PE 2 and ASBR 2 belong to AS 200.
Set up an inter-domain multi-segment PW (a method for inter-AS Option B networking) between PE 1 and
PE 2, so CE 1 and CE 2 can communicate over the backbone.
Configure the inter-domain multi-segment PW as follows:
• Configure LDP PWs between PE 1 and ASBR 1, and between PE 2 and ASBR 2, and configure
public tunnels through LDP to carry the PWs.
• Configure an LDP PW between ASBR 1 and ASBR 2. Advertise labeled IPv4 routes between ASBR
1 and ASBR 2 through BGP, so as to set up the public tunnel to carry the LDP PW.
• Connect the two public tunnels on ASBR 1.
• Connect the two public tunnels on ASBR 2.
Figure 73 Network diagram
Device Interface IP address Device Interface IP address
CE 1 Vlan-int10 100.1.1.1/24 ASBR 1 Loop0 192.2.2.2/32
PE 1 Loop0 192.1.1.1/32 Vlan-int23 23.1.1.2/24
Vlan-int23 23.1.1.1/24 Vlan-int26 26.2.2.2/24
PE 2 Loop0 192.4.4.4/32 ASBR 2 Loop0 192.3.3.3/32
Vlan-int22 22.2.2.1/24 Vlan-int26 26.2.2.3/24
CE 2 Vlan-int10 100.1.1.2/24 Vlan-int22 22.2.2.3/24
Configuration procedure
Before you perform the following configurations, configure VLANs and add ports to VLANs on CEs.
1. Configure CE 1:
<CE1> system-view
[CE1] vlan 10
[CE1-vlan10] quit
[CE1] interface vlan-interface 10
[CE1-Vlan-interface10] ip address 100.1.1.1 24
[CE1-Vlan-interface10] quit
[CE1] interface ten-gigabitethernet 1/0/1