Switch Spanning Tree Group Port Configuration
To display the following form, go to the Switch Spanning Tree Group Configuration form. Select a Switch
Spanning Tree port parameters are used to modify STP operation on an individual port basis.
The default configuration for STP/PVST+ is Off for downlink ports (1-16) and the management port (17),
and On for uplink ports (18-21). The default configuration for RSTP/MSTP is Spanning tree Off for all
downlink ports (1-16) and the management port (17), and On for all uplink ports (18-21), with downlink
ports configured as Edge ports.
The following table describes the Switch Spanning Tree Group Port Configuration controls:
Switch Spanning Tree Group Port Configuration controls
Port Priority (0-255)
Port Path Cost
Configures the port priority. The port priority helps determine which bridge
port becomes the designated port. In a network topology that has multiple
bridge ports connected to a single segment, the port with the lowest port
priority becomes the designated port for the segment. The range is 0 to 255,
and the default is 128.
RSTP/MSTP: The range is 0 to 240, in steps of 16 (0, 16, 32...) and the
default is 128.
Configures the port path cost. The port path cost is used to help determine
the designated port for a segment. Generally speaking, the faster the port,
the lower the path cost.
The range is 1 to 65535. The default is 100 for 10Mb ports,
10 for 100 Mb ports, 4 for Gigabit ports, and 2 for 10Gb ports.
A value of 0 indicates that the default cost will be computed for an auto-
negotiated link speed.
RSTP/MSTP: The range is 1 – 200000000, and the default it 20000 for
Gigabit ports, 2000 for 10Gb ports.
Configuring the switch