Redundancy
HMG-838PT & HMG-838EPT Web Configuration 7-11
STP CIST Port Configuration:
CIST Aggregated Port Configuration (Global configuration for all ports)
Port: The port number.
STP Enabled: Enable STP function
Path Cost: Path cost is used to determine the best path between devices. If “Auto” mode is selected, the system
automatically detects the speed and duplex mode to decide the path cost. Select “Specific”, if you want to use
user-defined value. Valid values are 1 to 200,000,000. Please note that path cost takes precedence over port
priority.
Priority: Select port priority.
Admin Edge: If an interface is attached to end nodes, you can set it to “Edge”.
Auto Edge: Select the checkbox to enable this feature. When enabled, a port is automatically determined to be at
the edge of the network when it receives no BPDUs.
Restricted Role: If enabled, this causes the port not to be selected as Root Port for the CIST or any MSTI, even if
it has the best spanning tree priority.
Restricted TCN: If enabled, this causes the port not to propagate received topology change notifications and
topology changes to other ports.
BPDU Guard: This feature protects ports from receiving BPDUs. It can prevent loops by shutting down a port
when a BPDU is received instead of putting it into the spanning tree discarding state. If enabled, the port will
disable itself upon receiving valid BPDU's.
Point-to-Point: Select the link type attached to an interface.
Auto: The switch automatically determines whether the interface is attached to a point-to-point link or
shared medium.
Forced True: It is a point-to-point connection.
Forced False: It is a shared medium connection.
CIST Normal Port Configuration (Configure each port)
Configuration and variables please check above.