Instructions

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Gigabit Ethernet PoE+ Web-Managed AV SwitchUser Manual
The switch allows for two levels of operation: the switch level and the port level. The switch level forms a
spanning tree consisting of links between one or more switches. The port level constructs a spanning tree
consisting of groups of one or more ports. The STP operates in much the same way for both levels.
The following image shows the MSTP global configuration page. From this screen, it is possible to:
• Enable or disable MSTP.
• Congure the bridge priority. Devices with lower priority are more likely to be the root bridge.
• Enable or disable the BPDU ltering function on the port in the portfast bpdu-lter default state.
• Enable or disable the BPDU guard function on the port in the portfast bpdu-guard default state.
• Congure the forwarding delay.
• Congure the interval for sending MSTP Hello packets.
• Start the errdisable mechanism. When a port that starts a BPDU guard or receives a BPDU, it starts the
errordisable timer. errordisable restarts this port after the congured timeout.
• Congure errordisable timeout time.
• Congure the number of seconds the switch waits to receive spanning tree conguration information
before triggering a reconguration.
• Congure the number of hops specied before a BPDU is dropped in a domain.
• Start or shut down any Cisco-compatible spanning tree protocol.
MSTP PORT CONFIGURATION
The following image shows the MSTP configuration page. Make MSTP-related configurations here, such as:
• Select the port to be congured.
• Congure a port as a portfast port to change the port from the blocking state to the forwarding state,
bypassing the listening and learning states.
• Open the BPDU lter on the selected port.
• Enable BPDU guard on the selected port.
• Enable the root guard function, and do not accept BPDU packets with a higher priority than the bridge.
Specify the switch as the root switch.
• Congure the connection type.
• Point-to-point: allows fast transition of the port status.
• Shared: does not allow rapid conversion of port status to go through the calculation process of 802.1D
to determine the status of the port.
• Congure the cist priority of the interface. The range is from 0 – 240 and can only be a multiple of 16.
The default is 128.
• Congure the cist path cost. The range is from 1 – 200000000. The default is 20000000. Lower-path costs
are more likely to be roots.
• Congure the type of protocol packets to be sent.
Switch