3Com Switch 8800 Configuration Guide Chapter 37 BGP/MPLS VPN Configuration
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II. Network diagram
PC2
172.16.0.1/16
192.168.1.1/24
192.168.1.2/24
Ethernet2/1/0
20.1.1.2/24
Ethernet2/1/0
172.16.0.2/16
Ethernet1/1/0
20.1.1.1/24
CE2
PE1 PE2
PC3
172.19.0.1/16
Ethernet2/1/0
172.19.0.2/
Ethernet1/1/0
20.3.1.1/24
CE3
Ethernet2/1/0
20.3.1.2/24
Loopback0:
1.1.1.9/32
Loopback0:
2.2.2.9/32
PC1
172.18.0.1/16
Ethernet2/1/0
172.18.0.2/16
CE1
Ethernet3/1/0
20.2.1.2/24
Ethernet1/1/0
20.2.1.1/24 AS100
AS65420
AS65410
AS65430
Ethernet1/1/0 Ethernet1/1/0
PC2
172.16.0.1/16
192.168.1.1/24
192.168.1.2/24
Ethernet2/1/0
20.1.1.2/24
Ethernet2/1/0
172.16.0.2/16
Ethernet1/1/0
20.1.1.1/24
CE2
PE1 PE2
PC3
172.19.0.1/16
Ethernet2/1/0
172.19.0.2/16
Ethernet1/1/0
20.3.1.1/24
CE3
Ethernet2/1/0
20.3.1.2/24
Loopback0:
1.1.1.9/32
Loopback0:
2.2.2.9/32
PC1
172.18.0.1/16
Ethernet2/1/0
172.18.0.2/16
CE1
Ethernet3/1/0
20.2.1.2/24
Ethernet1/1/0
20.2.1.1/24 AS100
AS65420
AS65410
AS65430
Ethernet1/1/0 Ethernet1/1/0
PC2
172.16.0.1/16
192.168.1.1/24
192.168.1.2/24
Ethernet2/1/0
20.1.1.2/24
Ethernet2/1/0
172.16.0.2/16
Ethernet1/1/0
20.1.1.1/24
CE2
PE1 PE2
PC3
172.19.0.1/16
Ethernet2/1/0
172.19.0.2/
Ethernet1/1/0
20.3.1.1/24
CE3
Ethernet2/1/0
20.3.1.2/24
Loopback0:
1.1.1.9/32
Loopback0:
2.2.2.9/32
PC1
172.18.0.1/16
Ethernet2/1/0
172.18.0.2/16
CE1
Ethernet3/1/0
20.2.1.2/24
Ethernet1/1/0
20.2.1.1/24 AS100
AS65420
AS65410
AS65430
Ethernet1/1/0 Ethernet1/1/0
PC2
172.16.0.1/16
192.168.1.1/24
192.168.1.2/24
Ethernet2/1/0
20.1.1.2/24
Ethernet2/1/0
172.16.0.2/16
Ethernet1/1/0
20.1.1.1/24
CE2
PE1 PE2
PC3
172.19.0.1/16
Ethernet2/1/0
172.19.0.2/16
Ethernet1/1/0
20.3.1.1/24
CE3
Ethernet2/1/0
20.3.1.2/24
Loopback0:
1.1.1.9/32
Loopback0:
2.2.2.9/32
PC1
172.18.0.1/16
Ethernet2/1/0
172.18.0.2/16
CE1
Ethernet3/1/0
20.2.1.2/24
Ethernet1/1/0
20.2.1.1/24 AS100
AS65420
AS65410
AS65430
Ethernet1/1/0 Ethernet1/1/0
Figure 37-19 Network diagram for multi-role host application III. Configuration procedure
1) Configure OSPF as the IGP protocol on the MPLS backbone network. Configure OSPF on PE1: