Establishing The Configuration Task; Configuring The Interval For Sending Vrrp Advertising Messages - Huawei AR2200-S Series Configuration Manual

Huawei AR2200-S Series Enterprise Routers
Configuration Guide - Reliability

2.7.1 Establishing the Configuration Task

Before optimizing VRRP functions, familiarize yourself with the applicable environment and
complete pre-configuration task of configuring a VRRP backup group.
Applicable Environment
You can configure the related parameters of VRRP packets to optimize the functions of backup
groups.
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Pre-configuration Tasks
Before adjusting and optimizing VRRP, complete the following tasks:
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Data Preparation
To adjust and optimize VRRP, you need the following data.
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2.7.2 Configuring the Interval for Sending VRRP Advertising
Messages
By prolonging the interval for sending VRRP advertisement packets on a virtual router, you can
reduce the network load.
Issue 01 (2012-01-06)
By increasing the interval for sending VRRP advertisement packets by the backup group,
you can reduce the network load caused by negotiation packets.
In VRRP for IPv4, the members in a VRRP backup group are configured with the same
interval for sending VRRP packets, which prevents multiple backup routers from being
switched to master routers simultaneously in one VRRP backup group.
By configuring the preemption mode and preemption delay time of the router in the backup
group, you can increase or reduce the speed of the master/backup switchover.
By enabling the test on the reachability of the virtual IP address, you can ping the virtual
IP address to check the network connectivity.
By prohibiting the system from checking number of hops in VRRP packets, you can
improve the compatibility of Huawei routers with different vendors' routers.
Configuring network layer attributes for interfaces to connect to the network
Configuring a VRRP backup group
Data
Interval for sending VRRP advertisement packets
Preemption delay of the routers in the VRRP backup group
Timeout period for the master to send gratuitous ARP packets
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