3.7.1 STP Port

This function allows assigning Path Cost value and Priority level on each port of SGSW-4802. Please refer to the detail description of Path Cost and Priority and setup procedures shown as below.

Description of Parameters

Bridge Port

This option shows the port of the bridge that connects to the root bridge.

Path Cost

The STA algorithm to determine the best path between devices uses this parameter. Therefore, lower values should be assigned to ports attached to faster media, and higher values assigned to ports with slower media. (Path cost takes precedence over port priority.)

The default and recommended range is: Ethernet: 100 (50~600) Fast Ethernet: 19 (10~60) Gigabit

Ethernet: 4 (3~10). The allowed range is 0 - 65535.

Priority

Defines the priority for the use of a port in the Spanning Tree algorithm. If the path cost for all ports on a switch are the same, the port with the highest priority (i.e., lowest value) will be configured as an active link in the Spanning Tree. Where more than one port is assigned the highest priority, the port with lowest numeric identifier will be enabled. The range is 0 - 255.

Setup Procedures

Step 1: Select any one of the ports, from 1 to 50, to connect to the root bridge.

Step 2: Key in the value for Path Cost.

Step 3: Set the priority level.

Step 4: Click “Apply” button after you satisfied with the setup. Click “Save” button to save the current configuration.

!Due the hardware restriction, the STP function cannot across between port 1-24, slot 49

NOTE

and port 25-48, slot 50.

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