Qtech QSW-2910-09T-POE-AC/DC [59/212] Brief introduction of vprb

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3.10 VPRB

3.10.1 Brief introduction of VPRB

VPRB (vlan port redundancy backup) is for vlan port backup. If there are multiple ports in a

vlan, one of them can be specified to be a major-port, another is the backup port for the major-

port. Generally, if major and backup-ports work normal, major-port is forwarding and backup-

port is discarding, and all business packets will be sent by major-port. If major-port works

abnormal and unable to forward packets, the backup-port will turn forwarding immediately and

start sending business packets until the major-port works normal.

In order to achieve backup and load balance in batch, VPRB needs to work with MSTP. First,

add backup vlan to MSTP instance, then configure the major-port and backup-port of this

MSTP instance.

3.10.2 VPRB configuration list

 Configure/delete VPRB port backup

 Show VPRB

3.10.3 Configure/delete VPRB port backup

Configure it in global configuration mode:

 Configure VPRB port backup

vprb major-port ethernet port-id bak-port ethernet port-id instance inst-id

 Delete VPRB port backup

no vprb major-port ethernet port-id

Parameter:

port-id: major-port or backup port

inst-id: MSTP instance id

Example:

!Add vlan 1-10 to MSTP instance 1

QTECH(config)#spanning-tree mst instance 1 vlan 1-10

!Specify major-port is e0/1, backup port is e0/2

QTECH(config)#vprb major-port ethernet 0/1 bak-port ethernet 0/2

instance 1

3.10.4 Show VPRB

Configure it in any mode:

show vprb