Configuring Ce Dual-Home - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
[PE3-bgp] group 11
[PE3-bgp] peer 11.1.1.1 connect-interface loopback 0
[PE3-bgp] ipv4-family vpnv4
[PE3-bgp-af-vpn] peer 11 enable
[PE3-bgp-af-vpn] peer 11.1.1.1 group 11
[PE3-bgp-af-vpn] quit
[PE3-bgp] quit

3.4.5 Configuring CE Dual-Home

I. Network requirements
For the applications that require high robustness of network, you may use CE
dual-home networking mode.
CE1 and CE2 are respectively connected to PE1 and PE2 to achieve dual-homing.
Three PEs are also connected to each other as back links. CE2 and CE4 are not in
dual-home mode, and only connected to one PE.
CE1 and CE3 are in one VPN, and CE2 and CE4 are in another VPN. Two VPNs
cannot access each other.
II. Network diagram
AS:65003 AS:65003
Loopback0 Loopback0
1.1.1.1/32 1.1.1.1/32
Ethernet1/0/0 Ethernet1/0/0
172.11.11.1/24 172.11.11.1/24
Ethernet1/0/0 Ethernet1/0/0
172.11.11.2/24 172.11.11.2/24
AS:65001 AS:65001
Figure 3-17 CE dual-home network diagram
CE3 CE3
Ethernet1/0/0 Ethernet1/0/0
192.168.13.2/24 192.168.13.2/24
Loopback0 Loopback0
3.3.3.3/32 3.3.3.3/32
Ethernet3/0/0 Ethernet3/0/0
192.168.13.1/24 192.168.13.1/24
Pos1/0/0 Pos1/0/0
30.1.1.1/24 30.1.1.1/24
Pos4/0/0 Pos4/0/0
30.1.1.2/24 30.1.1.2/24
Pos3/0/0 Pos3/0/0
10.1.1.1/24 10.1.1.1/24
PE1 PE1
Ethernet2/0/0 Ethernet2/0/0
172.21.21.1/24 172.21.21.1/24
Ethernet2/0/0 Ethernet2/0/0
172.12.12.2/24 172.12.12.2/24
CE1 CE1
3Com Corporation
Chapter 3 BGP/MPLS VPN Configuration
Ethernet1/0/0 Ethernet1/0/0
192.168.23.2/24 192.168.23.2/24
Ethernet4/0/0 Ethernet4/0/0
192.168.23.1/24 192.168.23.1/24
Pos2/0/0 Pos2/0/0
20.1.1.2/24 20.1.1.2/24
PE3 PE3
Pos4/0/0 Pos4/0/0
20.1.1.1/24 20.1.1.1/24
AS:100 AS:100
Pos3/0/0 Pos3/0/0
10.1.1.2/24 10.1.1.2/24
PE2 PE2
Ethernet2/0/0 Ethernet2/0/0
172.12.12.1/24 172.12.12.1/24
Ethernet2/0/0 Ethernet2/0/0
172.21.21.2/24 172.21.21.2/24
3-53
AS:65004 AS:65004
CE4 CE4
Loopback0 Loopback0
2.2.2.2/32 2.2.2.2/32
Ethernet1/0/0 Ethernet1/0/0
172.22.22.1/24 172.22.22.1/24
Ethernet1/0/0 Ethernet1/0/0
172.22.22.2/24 172.22.22.2/24
CE2 CE2
AS:65002 AS:65002