Qtech QSW-3200-28T [70/136] Stp configuration list

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Chapter 9 STP CONFIGURATION

9.1 Brief introduction of STP Configuration

STP (Spanning Tree Protocl) is a part of IEEE 802.1D network bridge. The realization of

standard STP can eliminate network broadcast storm caused by network circle connection and

the circle connection caused by misplaying and accidence, and it also can provide the

possibility of network backup connection.

STP protocol with IEEE 802.1D standard provides network dynamic redundancy transferring

mechanism and prevents circle connection in bridge network. It determines which interface of

the network bridge can transmit data packet. After executing STP matching, switch in the LAN

will form a STP dynamic topology which prevents the loop existing between any two working

station to prevent broadcast storm in LAN. At the same time, STP matching is responsible to

detect the change of physical topology to establish new spanning tree after the changes of

topology. For example: when there is a break in the switch or a channel, it can provide certain

error tolerance to re-configure a new STP topology.

9.2 STP Configuration

9.2.1 STP Configuration list

The configuration can be effective only after STP enables. Configure related parameter of

devices or Ethernet interface before enabling STP and these configurations will be saved after

disabling STP. And the parameter will be effective after re-enabling STP. STP configuration list

is as following:

 Enable/disable interface STP

 Configure STP mode

 Configure STP priority

 Configure Forward Delay

 Configure Hello Time

 Configure Max Age

 Configure path cost of specified interfaces

 Configure STP priority od specified port

 Configure interface to force to send rstp packet

 Configure link type of specified interface

 Configure the current port as an edge port

 Configure the speed limit of sending BPDU of specified interface

 STP monitor and maintainenance

9.2.2 Enable/disable STP

Configure it in global configuration mode:

 Enable/disable STP of the devices

spanning-tree

 Disable STP of the devices

no spanning-tree

By default, switch STP disables.

For example: