Applicable Environment
You can configure the related parameters of VRRP packets to optimize the functions of backup
groups.
l By increasing the interval for sending VRRP advertisement packets by the backup group,
you can reduce the network load caused by negotiation packets.
l Configurations of intervals for sending VRRP packets affect the master router election
differently in VRRP for IPv4 and VRRP6 as follows:
– 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.
– In VRRP6, only can one master router work in a VRRP6 backup group in spite of the
fact that members are configured with different intervals for sending VRRP packets.
l By configuring the preemption mode and preemption delay time of the switch in the backup
group, you can increase or reduce the speed of the master/backup switchover.
l By enabling the test on the reachability of the virtual IP address, you can ping the virtual
IP address to check the network connectivity.
l By prohibiting the system from checking number of hops in VRRP packets, you can
improve the compatibility of Huawei routers with different vendors' routers.
Pre-configuration Tasks
Before adjusting and optimizing VRRP, complete the following tasks:
l Configuring network layer attributes for interfaces to connect to the network
l Configuring the VRRP backup group
Data Preparation
To adjust and optimize VRRP, you need the following data.
No.
Data
1 Interval for sending VRRP advertisement packets
2 Preemption delay of the switchs in the backup group
3 Timeout period for the master to send gratuitous ARP packets
6.7.2 Configuring the Interval for Sending VRRP Advertising
Messages
By prolonging the interval for sending VRRP advertisement packets on a virtual switch, you
can reduce the network load.
Quidway S6700 Series Ethernet Switches
Configuration Guide - Reliability 6 VRRP and VRRP6 Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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