H3C Technologies H3C S5560 Series Switches - Manual (Page 219)

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{
The VLAN is deleted on the device.
{
The participant sends the Leave message to its peer participant.
• If the VLAN in the a Leave message is a static VLAN, the participant will not send the Leave
message to its peer participant.
LeaveAll message
Each MRP participant starts its LeaveAll timer when starting up. When the timer expires, the MRP
participant sends LeaveAll messages to the peer participant.
Upon sending or receiving a LeaveAll message, the local participant starts the Leave timer. The local
participant determines whether to send a Join message depending on its the attribute status. A
participant can re-register the attributes in the received Join message before the Leave timer expires.
When the Leave timer expires, a participant deregisters all attributes that have not been re-registered to
periodically clear useless attributes in the network.
MRP timers
MRP uses the following timers to control message transmission.
Periodic timer
The Periodic timer controls the transmission of MRP messages. An MRP participant starts its own Periodic
timer upon startup, and stores MRP messages to be sent before the Periodic timer expires. When the
Periodic timer expires, MRP sends stored MRP messages in as few MRP frames as possible and restarts
the Periodic timer. This mechanism reduces the number of MRP frames periodically sent.
You can enable or disable the Periodic timer. When the Periodic timer is disabled, MRP does not
periodically send MRP messages. Instead, an MRP participant sends MRP messages when the LeaveAll
timer expires or the participant receives a LeaveAll message from the peer participant.
Join timer
The Join timer controls the transmission of Join messages. An MRP participant starts the Join timer after
sending a Join message to the peer participant. Before the Join timer expires, the participant does not
resend the Join message when the following conditions exist:
• The participant receives a JoinIn message from the peer participant.
• The received JoinIn message has the same attributes as the sent Join message.
When both the Join timer and the Periodic timer expire, the participant resends the Join message.
Leave timer
The Leave timer controls the deregistration of attributes.
An MRP participant starts the Leave timer in one of the following conditions:
• The participant receives a Leave message from its peer participant.
• The participant receives or sends a LeaveAll message.
The MRP participant does not deregister the attributes in the Leave or LeaveAll message if the following
conditions exist:
• The participant receives a Join message before the Leave timer expires.
• The Join message includes the attributes that have been encapsulated in the Leave or LeaveAll
message.