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Configuration Guide - Reliability

CloudEngine 12800 and 12800E V200R002C50

This document describes the configurations of Reliability, including BFD Configuration, VRRP Configuration, DLDP Configuration, Smart Link and Monitor Link Configuration, EFM Configuration, and CFM Configuration.
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VRRP in Active/Standby Mode

VRRP in Active/Standby Mode

Active/Standby is the basic VRRP working mode, In Figure 3-4. In active/standby mode, a virtual router consists of one master and multiple backups.

SwitchA is the master and forwards service packets. SwitchB and SwitchC are backups and do not forward service packets. SwitchA periodically sends VRRP Advertisement packets to SwitchB and SwitchC, notifying other switches that SwitchA is working properly. If SwitchA is faulty, a new master is selected from SwitchB and SwitchC based on their priorities. The new master then takes over traffic.

After SwitchA recovers, it becomes the master in preemption mode. In non-preemption mode, SwitchA remains in Backup state.

Figure 3-4 VRRP in active/standby
Updated: 2019-03-21

Document ID: EDOC1000166606

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