Configure MVST Parameters

Configuration Condition

Before configuring the MVST parameters, first complete the following task:

• Configure the master device

Configure the Interval of Sending the Detection Packet

The device enabled with the MVST function periodically sends the detection packet to discover the connected device and extract the key information from the detection packet to form its own neighbor device information table.

Table 3-4 Configure the interval of sending the detection packet

Configure the Age Time of the Neighbor

The age time of the neighbor indicates the life time of the local device information on the neighbor device so that the neighbor device can delete the local device information after the life time of the local device arrives.

Table 3-5 Configure the age time of the neighbor

Configure the Keepalive Interval of the Extended Card

After the extended card is added to the MVST domain, the master device and extended card start to exchange the keepalive packets. By default, the keepalive packet is exchanged every 8s. If the master device does not receive three keepalive packets of the extended card successively, change the Active status of the extended card to the Connect status.

Table 3-6 Configure the keepalive interval of the extended card

Configure Connect Status Timeout of Extended Card

If the master device receives the keepalive packet sent by the extended card within the valid time of the connect status, change the Connect status of the extended card to the Active status. If not receiving the keepalive packet sent by the extended card, change the Connect status of the extended card to the Disconnect status.

The master device does not send the keepalive packet to the extended card in the Disconnect status any more until receiving the keepalive packet sent by the extended card again.

Table 3-7 Configure the connect status timeout of the extended card

Configure Topology Parameters

After the MVST domain is set up, the master device regularly collects the topology information of the whole MVST domain via the topology request packet. When the topology request packet is spreading in the network, lots of network devices will receive the topology request packet at the same time, and send the topology response packet, which may cause the network block. To reduce the phenomenon, the second port starts to forward the topology request packet after the master device waits for the delay time of each port forwarding the topology collection request packet…..until the last port completes the forwarding of the topology request packet.

Table 3-8 Configure the topology parameters