Configuring Multiple VLAN Registration Protocol
Multiple VLAN Registration Protocol (MVRP) automates the creation and management of VLANs. When using MVRP on a QFabric system, you must manually create on the QFabric the VLANs that exist on the attached servers because the QFabric implementation of MVRP does not allow VLANs to be created dynamically. However, you do not need to manually assign VLAN membership to the QFabric ports that connect to the servers. MVRP automatically assigns VLAN membership to server-facing QFabric ports when it learns about a VLAN from an attached server. .
MVRP is disabled by default. To enable MVRP or set MVRP options, follow these instructions:
Enabling MVRP
MVRP can be enabled only on trunk interfaces. To enable MVRP on a trunk interface:
 | Note: On QFX Series switches, you must configure specific interfaces—you cannot specify interface all. You can enable MVRP on an interface range. |
Disabling MVRP
MVRP is disabled by default. You only need to perform this procedure if you have previously enabled MVRP.
To disable MVRP on the entire QFabric system:
To disable MVRP on a specific trunk interface:
Configuring Timer Values
The timers in MVRP define the amount of time an interface waits to join or leave MVRP or to send or process the MVRP information for the switch after receiving an MVRP PDU. The join timer controls the amount of time the switch waits to accept a registration request, the leave timer controls the period of time that the switch waits in the Leave state before changing to the unregistered state, and the leaveall timer controls the frequency with which the LeaveAll messages are communicated.
The default MVRP timer values are 200 ms for the join timer, 1000 ms for the leave timer, and 10000 ms for the leaveall timer.
 | Best Practice: Maintain default timer settings unless there is a compelling reason to change the settings. Modifying timers to inappropriate values might cause an imbalance in the operation of MVRP. |
To set the join timer for an interface:
To set the leave timer for an interface:
To set the leaveall timer for aninterface:
Configuring Passive Mode
QFX switches include a mode—called passive mode—in which an MVRP-configured interface does not announce its membership in a VLAN or send any VLAN declarations (updates) unless it receives registration for that VLAN from a peer (server).
To configure an interface to operate in passive mode:
