Huawei AR2200-S Series Configuration Manual page 35

Huawei AR2200-S Series Enterprise Routers
Configuration Guide - Reliability
Figure 1-10 Networking diagram of link backup configurations in interface backup mode on a
3G network
Configuration Roadmap
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Data Preparation
To complete the configuration, you need the following data:
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Procedure
Step 1 Configure an enterprise intranet and specify RouterA as the egress gateway of the enterprise.
Assume that the enterprise intranet uses only one network segment 192.168.100.1/24 and
intranet users connect to RouterA through Layer 2 Ethernet interface Ethernet2/0/0.
<Huawei> system-view
[Huawei] sysname RouterA
[RouterA] vlan 123
[RouterA-vlan123] quit
[RouterA] dhcp enable
Issue 01 (2012-01-06)
ATM3/0/0
Cellular0/0/0
RouterA
Configure an enterprise intranet, specify RouterA as an egress gateway of the enterprise,
and configure RouterA to assign IP addresses to users in the enterprise.
Configure the uplink primary interface of RouterA.
Configure the uplink backup interface of RouterA.
Configure a static route so that RouterA can connect to the WAN.
Downlink interface: Layer 2 Ethernet interface number, intranet network segment, and IP
address pool from which RouterA assigns IP addresses to intranet users
Uplink primary interface: interface number, IP address segment on which IP addresses need
to be translated using NAT, backup interface number, and interface switching delay
Uplink backup interface: interface number, IP address segment on which IP addresses need
to be translated using NAT, dial-up parameters (including the dial rule, allowed idle
duration, dial group number, and dial string)
Static route: destination IP address, mask, and outbound interface type and number
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DSLAM
3G
Access
network
1 Interface Backup Configuration
IP
Primary link
Backup link
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