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11.3.1 Before You Start
Before configuring dual-device ARP hot backup, familiarize yourself with the deployment
scenario, complete the pre-configuration tasks, and obtain the data required for the configuration.
Applicable Environment
Dual-device ARP hot backup is configured on the master and slave devices. This improves
network reliability and shortens the interruption time after a master/backup VRRP switchover
occurs. On the control and forwarding planes, dual-device ARP hot backup synchronizes ARP
entries from the master device to the slave device in real time. This allows the new master device
to take over traffic and forward it to hosts without learning MAC addresses of users if a master/
backup VRRP switchover occurs.
Pre-configuration Tasks
Before configuring dual-device ARP hot backup, complete the following tasks:
l
Establish the multi-device backup platform.
l
Configure VRRP Priorities on Interfaces in a VRRP Backup Group.
Data Preparation
None.
11.3.2 Configuring an RBP for ARP Service Backup
To enable dual-device ARP hot backup, specify a service type for backup.
Context
Perform the following steps on the devices that back up each other:
Procedure
Step 1
Run:
system-view
The system view is displayed.
Step 2
Run:
remote-backup-profile
profile-name
The RBP view is displayed.
Step 3
Run:
service-type
arp
The ARP service is specified to be backed up.
----End
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
11 Multi-node Backup Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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