Example For Configuring Interface Backup In Active/Standby Mode On An Isdn Network - Huawei AR2200-S Series Configuration Manual

Huawei AR2200-S Series Enterprise Routers
Configuration Guide - Reliability
l
1.6.3 Example for Configuring Interface Backup in Active/Standby
Mode on an ISDN Network
This section describes how to configure Ethernet link backup in interface backup mode on an
ISDN network.
Networking Requirements
As shown in
network through GigabitEthernet2/0/0. RouterB connects to an ISDN network through
PRI1/0/0:15 and PRI2/0/0:15 and an IP network through GigabitEthernet2/0/0.
RouterA is the egress gateway of the headquarters. RouterB is located in a branch.
RouterA communicates with RouterB over an IP network. However, if GigabitEthernet2/0/0 of
RouterA is faulty, the headquarters and the branch cannot exchange data. To prevent this fault,
the enterprise leases an ISDN line as a backup of the IP network. The ISDN line is used only
when faults occur on the IP network. This improves communication reliability.
Figure 1-9 Configuring link backup using the interface backup mode on an ISDN network
G E 2 /0 /0
R o u te rA
Issue 01 (2012-01-06)
Configuration file of RouterB
#
sysname RouterB
#
interface GigabitEthernet1/0/0
ip address 2.2.2.2 255.255.255.0
#
interface GigabitEthernet2/0/0
ip address 1.1.1.2 255.255.255.0
#
interface GigabitEthernet3/0/0
ip address 3.3.3.2 255.255.255.0
#
ip route-static 192.168.1.0 24 2.2.2.1
ip route-static 192.168.1.0 24 1.1.1.1
ip route-static 192.168.1.0 24 3.3.3.1
#
return
Figure 1-9, RouterA connects to an ISDN network through PRI1/0/0:15 and an IP
R o u te rC
P R I1 /0 /0 :1 5
2 0 .1 .1 .1 /2 4
6 6 0 2 2 0
IS D N
S w itch
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
IP
R o u te rD
P R I1 /0 /0 :1 5
IS D N
6 6 0 2 1 0
S w itch
IS D N
6 6 0 2 0 8
IS D N
S w itch
1 Interface Backup Configuration
G E 2 /0 /0
R o u te rB
D ia le r0
2 0 .1 .1 .2 /2 4
P R I2 /0 /0 :1 5
23