Operation Manual – Auto DetectH3C S5600 Series Ethernet Switches Chapter 1 Auto Detect Configuration1-4To do… Use the command… RemarksEnter system view system-view —Enter VLAN interface view interface Vlan-interface vlan-id —Enable the auto detectfunction for VRRPvrrp vrid virtual-router-id trackdetect-group group-number[ reduced value-reduced ]Required1.2.4 Auto Detect Implementation in VLAN Interface BackupUsing Auto Detect can help realize VLAN interfaces backup. When data can betransmitted through two VLAN interfaces on the switch to the same destination,configure one of the VLAN interface as the active interface and the other as the standbyinterface. The standby interface is enabled automatically when the active fails, so as toensure the data transmission. In this case, the Auto Detect function is implemented asfollows:z In normal situations (that is, when the detected group is reachable), the standbyVLAN interface is down and packets are transmitted through the active VLANinterface.z When the link between the active VLAN interface and the destination faults (that is,the detected group is unreachable), the system enables the backup VLANinterface.z When the link between the active VLAN interface and the destination recovers(that is, the detected group becomes reachable again), the system shuts downthe standby VLAN interface again.Note:You need to create the detected group and perform configurations concerning VLANinterfaces before the following operations.Follow these steps to configure the auto detect function for VLAN interface backup:To do… Use the command… RemarksEnter system view system-view —Enter VLAN interface view interface Vlan-interfacevlan-id —
