Example For Configuring Dual-Homed Ces - Huawei quidway s7700 Configuration Manual

Quidway S7700 Smart Routing Switch
Configuration Guide - VPN
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4.11.5 Example for Configuring Dual-Homed CEs

Networking Requirements
It is a trend that all the telecommunication services will be carried on a universal IP network.
Some important services such as 3G/NGN, IPTV streaming media, and VIP customer VPN
require high reliability of the network. To improve the network reliability, you can improve the
reliability of the links by configuring fast route convergence, fault detection, fast reroute, and
route backup in addition to improving the reliability of the network devices.
On the access layer, the dual-homed CE networking is a common solution to improve the network
reliability. A dual-homed CE refers to a CE that is connected to two PEs that belong to the same
VPN with the CE. In this networking, the CE connects to the backbone network through two
links. The two links work in load balancing mode or active/standby mode.
As shown in
CE1 is connected to PE1 and PE2, and CE2 is connected to PE3 and PE4.
If the data traffic volume from CE1 to CE2 is large but traffic volume from CE2 to CE1 is small,
the data traffic from CE1 to CE2 can be transmitted in load balancing mode. The data traffic
from CE2 to CE1 is transmitted through PE4, and PE3 only works as a backup.
Issue 01 (2011-07-15)
#
ipv6-family vpn6-instance vpn1
peer 2002::1 as-number 65002
import-route direct
#
ospf 1
area 0.0.0.0
network 4.4.4.9 0.0.0.0
network 162.1.1.0 0.0.0.255
#
return
Configuration file of CE2
#
sysname CE2
#
ipv6
#
vlan batch 10
#
interface Vlanif10
ipv6 enable
ipv6 address 2002::1/64
#
interface GigabitEthernet1/0/0
port link-type trunk
port trunk allow-pass vlan 10
#
bgp 65002
router-id 20.20.20.20
peer 2002::2 as-number 200
#
ipv6-family unicast
undo synchronization
import-route direct
peer 2002::2 enable
#
return
Figure 4-6, CE1 is located in site1 of vpn1, and CE2 is located in site2 of vpn1.
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