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Using default routes simplifies user configuration but requires highly reliable performance of
the default gateway. Adding gateways can improve reliability. This method is available only
when hosts are able to select a route to other egress gateways. Hosts on a LAN cannot run a
dynamic routing protocol and cannot select a route among multiple gateways.
shows a network diagram for a VRRP backup group that is used to address the
preceding problem.
Figure 4-6
Schematic diagram for a VRRP backup group
Master
Network
Backup
10.1.1.1/24
10.1.1.2/24
Network
Virture Router
10.1.1.10
SwitchA
SwitchA
PCA
Gateway:10.1.1.10
IP Address:10.1.1.3/24
PCA
Gateway:10.1.1.10
IP Address:10.1.1.3/24
Virtual IP Address
10.1.1.10
A VRRP backup group works in master/backup mode. If the master NE80E/40E fails, a backup
NE80E/40E is used to forward data, improving network reliability.
After a VRRP backup group is configured, you can configure priorities for group members,
packet attributes, the interval at which packets are sent, and smooth VRRP switching, and enable
the function that pings the virtual IP address. These configurations can improve the performance
of the VRRP backup group.
NOTE
The GigabitEthernet,Ethernet, virtual Ethernet (VE),Eth-Trunk, VLANIF and the GE sub-interface support
VRRP.
Pre-configuration Tasks
Before configuring basic functions of a VRRP IPv4 backup group, complete the following task:
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
4 VRRP Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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