CONSOLE INTERFACE
Configuring Port STP Settings
Use the Perport Configuration page to set STA attributes for specific ports, including port priority and path cost. You can use a different priority or path cost for ports of the same media type to indicate the preferred path.
Field Attributes
•Priority – Defines the priority used for this port in the Spanning Tree Protocol. 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. This makes a port with higher priority less likely to be blocked if the Spanning Tree Protocol is detecting network loops. Where more than one port is assigned the highest priority, the port with lowest numeric identifier will be enabled.
-Default: 128
-Range: 0 - 255
•Path Cost – This parameter is used by the STP to determine the best path between devices. 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.)
• Full Range:
• Recommended Range –
-Ethernet:
-Fast Ethernet:
-Gigabit Ethernet:
•Defaults –
-Ethernet – half duplex: 100; full duplex: 95; trunk: 90
-Fast Ethernet – half duplex: 19; full duplex: 18; trunk: 15
-Gigabit Ethernet – full duplex: 4
