3Com 3C13636 Configuration Manual page 948

3Com Router 3000 Ethernet Family
Configuration Guide
Note:
Different from Option A, Option B method requires that the VPN-Target attribute of VPN
instances of ASBR-PE and PE in the same AS should match each other. In addition, in
different ASs, the matching of VPN-Target attributes of PEs is necessary.
In this part:
The configurations on CE1, CE2, PE1, and PE2 are the same as those in section
3.4.10 "Configuring Inter-Provider Backbones Option A".
It is unnecessary to configure VPN instances and interface binding on ASBR-PEs.
# Configure CE1.
[CE1] interface ethernet 1
[CE1-Ethernet1] ip address 168.1.1.2 255.255.0.0
[CE1-Ethernet1] quit
# Configure a VPN instance on PE1 and bind it to the interface connecting to CE1.
[PE1] ip vpn-instance vpna
[PE1-vpn-vpn-vpna] route-distinguisher 100:2
[PE1-vpn-vpn-vpna] vpn-target 100:1 both
[PE1-vpn-vpn-vpna] quit
[PE1] interface ethernet 2/0/0
[PE1-Ethernet2/0/0] ip binding vpn-instance vpna
[PE1-Ethernet2/0/0] ip address 168.1.1.1 255.255.0.0
[PE1-Ethernet2/0/0] quit
# Configure CE2.
[CE2] interface ethernet 1
[CE2-Ethernet1] ip address 168.2.2.2 255.255.0.0
[CE2-Ethernet1] quit
# Configure a VPN instance on PE2 and bind it to the interface connecting to CE2.
[PE2] ip vpn-instance vpna
[PE2-vpn-instance] route-distinguisher 200:2
[PE2-vpn-instance] vpn-target 100:1 both
[PE2-vpn-instance] quit
[PE2] interface ethernet 2/0/0
[PE2-Ethernet2/0/0] ip binding vpn-instance vpna
[PE2-Ethernet2/0/0] ip address 168.2.2.1 255.255.0.0
[PE2-Ethernet2/0/0] quit
After the configuration, you can view the VPN instance configuration by executing the
display ip vpn-instance verbose command on PEs. CEs can be pinged successfully
on PEs.
Chapter 3 BGP/MPLS VPN Configuration
3Com Corporation
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