User Manual
3-9. STP Configuration
The Spanning Tree Protocol (STP) is a standardized method (IEEE 802.1D) for avoiding loops in switched networks. When STP is enabled, ensure that only one path is active between any two nodes on the network at a time. User can enable Spanning Tree Protocol on switch’s web management and then set up other advanced items. We recommend that you enable STP on all switches to ensure a single active path on the network.
3-9-1. STP Status
Function name:
STP Status
Function description:
In the Spanning Tree Status, user can read 12 parameters to know STP current status. The 12 parameters’ description is listed in the following table.
Parameter description:
STP State:
Show the current STP Enabled / Disabled status. Default is “Disabled”. Bridge ID:
Show switch’s bridge ID which stands for the MAC address of this switch. Bridge Priority:
Show this switch’s current bridge priority setting. Default is 32768. Designated Root:
Show root bridge ID of this network segment. If this switch is a root bridge, the “Designated Root” will show this switch’s bridge ID.
Designated Priority:
Show the current root bridge priority. Root Port:
Show port number connected to root bridge with the lowest path cost. Root Path Cost:
Show the path cost between the root port and the designated port of the root bridge.
Current Max. Age:
Show the current root bridge maximum age time. Maximum age time is used to monitor if STP topology needs to change. When a bridge does not receive a hello message from root bridge until the maximum age time is counted down to 0, the bridge will treat the root bridge malfunctioned and issue a Topology Change Notification (TCN) BPDU to all other bridges.
Publication date: June, 2005
Revision A1
83
