3Com 8807 Configuration Manual page 595

Multi-Role Host
Configuration Example
[CE] ospf 100 vpn-instance vpn1
[CE-ospf-100] vpn-instance-capability simple
[CE-ospf-100] area 0.0.0.0
[CE-ospf-100-area-0.0.0.0] network 10.1.1.0 0.0.0.255
[CE-ospf-100-area-0.0.0.0] network 10.2.1.0 0.0.0.255
# Configure OSPF 300.
[CE] ospf 300 vpn-instance vpn2
[CE-ospf-300] vpn-instance-capability simple
[CE-ospf-300] area 0.0.0.1
[CE-ospf-300-area-0.0.0.1] network 20.1.1.0 0.0.0.255
[CE-ospf-300-area-0.0.0.1] network 20.2.1.0 0.0.0.255
Network requirements
CE1 and CE3 belong to VPN1, and CE2 belong to VPN2.
The host PC2 with the IP address of 172.16.0.1 accesses the network through
CE2. As a multi-role host, it can access both VPN1 and VPN2.
Network diagram
Figure 144 Network diagram for multi-role host application
PC1 PC1 PC1 PC1
172.18.0.1/16 172.18.0.1/16 172.18.0.1/16 172.18.0.1/16
Ethernet2/1/0 Ethernet2/1/0 Ethernet2/1/0 Ethernet2/1/0
AS65410 AS65410 AS65410 AS65410
172.18.0.2/16 172.18.0.2/16 172.18.0.2/16 172.18.0.2/16
CE1 CE1 CE1 CE1
Ethernet1/1/0 Ethernet1/1/0 Ethernet1/1/0 Ethernet1/1/0
20.2.1.1/24 20.2.1.1/24 20.2.1.1/24 20.2.1.1/24
Loopback0: Loopback0: Loopback0: Loopback0:
1.1.1.9/32 1.1.1.9/32 1.1.1.9/32 1.1.1.9/32
Ethernet3/1/0 Ethernet3/1/0 Ethernet3/1/0 Ethernet3/1/0
20.2.1.2/24 20.2.1.2/24 20.2.1.2/24 20.2.1.2/24
PE1 PE1 PE1 PE1
Ethernet2/1/0 Ethernet2/1/0 Ethernet2/1/0 Ethernet2/1/0
Ethernet1/1/0 Ethernet1/1/0 Ethernet1/1/0 Ethernet1/1/0
20.1.1.2/24 20.1.1.2/24 20.1.1.2/24 20.1.1.2/24
20.1.1.1/24 20.1.1.1/24 20.1.1.1/24 20.1.1.1/24
CE2 CE2 CE2 CE2
Ethernet2/1/0 Ethernet2/1/0 Ethernet2/1/0 Ethernet2/1/0
AS65420 AS65420 AS65420 AS65420
172.16.0.2/16 172.16.0.2/16 172.16.0.2/16 172.16.0.2/16
PC2 PC2 PC2 PC2
172.16.0.1/16 172.16.0.1/16 172.16.0.1/16 172.16.0.1/16
Configuration procedure
1 Configure OSPF as the IGP protocol on the MPLS backbone network.
# Configure OSPF on PE1:
Typical BGP/MPLS VPN Configuration Example
AS100 AS100 AS100 AS100
Ethernet1/1/0 Ethernet1/1/0 Ethernet1/1/0 Ethernet1/1/0
Ethernet1/1/0 Ethernet1/1/0 Ethernet1/1/0 Ethernet1/1/0
192.168.1.2/24 192.168.1.2/24 192.168.1.2/24 192.168.1.2/24
192.168.1.1/24 192.168.1.1/24 192.168.1.1/24 192.168.1.1/24
Ethernet2/1/0 Ethernet2/1/0 Ethernet2/1/0 Ethernet2/1/0
20.3.1.2/24 20.3.1.2/24 20.3.1.2/24 20.3.1.2/24
Ethernet2/1/0 Ethernet2/1/0 Ethernet2/1/0 Ethernet2/1/0
172.19.0.2/16 172.19.0.2/ 172.19.0.2/16 172.19.0.2/
Loopback0: Loopback0: Loopback0: Loopback0:
2.2.2.9/32 2.2.2.9/32 2.2.2.9/32 2.2.2.9/32
PE2 PE2 PE2 PE2
Ethernet1/1/0 Ethernet1/1/0 Ethernet1/1/0 Ethernet1/1/0
20.3.1.1/24 20.3.1.1/24 20.3.1.1/24 20.3.1.1/24
CE3 CE3 CE3 CE3
AS65430 AS65430 AS65430 AS65430
PC3 PC3 PC3 PC3
172.19.0.1/16 172.19.0.1/16 172.19.0.1/16 172.19.0.1/16
595