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Prerequisites
The active/standby interface backup function has been configured.
Procedure
Step 1
Run the
display standby state
command to check the status of the active or the standby interface.
----End
Example
Running the
display standby state
command, you can view information about the status of the
active and standby interfaces as follows:
<HUAWEI>
display standby state
Interface Interfacestate Backupstate Backupflag Pri Loadstate
GigabitEthernet3/0/0 UP MUP MU
GigabitEthernet3/0/0 STANDBY STANDBY BU 20
Backup-flag meaning:
M---MAIN B---BACKUP V---MOVED U---USED
D---LOAD P---PULLED G---LOGICCHANNEL
As shown in the command output, GE 3/0/0 serves as an active interface and is in the Up state.
GE 3/0/4 serves as a standby interface and is in the Standby state and its priority is 20.
2.3 Configuring the Load Balancing Interface Backup
Interface backup in load balancing mode means that traffic is balanced between the active
interface and the standby interface.
2.3.1 Before You Start
Before configuring interface backup in load balancing mode, familiarize yourself with the usage
scenario, complete the pre-configuration tasks, and obtain the required data.
Applicable Environment
The interface backup can be configured for multiple devices to improve their reliability through
standby interfaces.
In the load-balancing mode, if the flows on the active interface exceed the threshold, the
router automatically enables an available standby interface to undertake the transmission.
Two important parameters in the load-balancing mode are:
l
Percentage threshold of load balancing
l
Bandwidth of the active interface
The two parameters affect the service throughput on each interface. Meanwhile, the bandwidth
of the active interface is preferentially used.
Pre-configuration Tasks
Before configuring the load balancing interface backup, complete the following tasks:
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
2 Interface Backup Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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