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Configuration Guide - Reliability

S1720, S2700, S5700, and S6720 V200R010C00

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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VRRP Heartbeat Line

VRRP Heartbeat Line

As shown in Figure 4-9, a VRRP group is configured on SwitchA and SwitchB on the VRRP + STP network. If the switch connected to users cannot forward VRRP Advertisement packets (for example, the switch is configured to discard unknown multicast packets) or the reachability or stability of the link that VRRP Advertisement packets traverse needs to be ensured, deploy a heartbeat line between SwitchA and SwitchB. This allows VRRP Advertisement packets to be transmitted.

After the heartbeat line is configured, Interface1 and Interface2 need to be added to the VLAN corresponding to the VRRP group. For example, when the VRRP group is configured on VLANIF 100, Interface1 and Interface2 need to be added to VLAN 100. In this situation, a loop occurs between SwitchA, SwitchB, and Switch. A loop prevention protocol such as STP needs to be used to eliminate loops.

Figure 4-9  VRRP heartbeat line
Updated: 2019-08-21

Document ID: EDOC1000141941

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