Siemens SIMATIC NET SCALANCE SC-600 Configuration Manual page 96

Configuring with Web Based Management
4.3 "Information" menu
Description of the displayed values
The following fields are displayed:
• Spanning Tree Mode
Shows the set mode. You specify the mode in "Layer 2 > Configuration" and in "Layer
2 > Spanning Tree > General".
The following values are possible:
– '-'
– RSTP
• Bridge Priority / Root Priority
Which device becomes the root bridge is decided by the bridge priority. The bridge
with the highest priority (in other words, with the lowest value for this parameter)
becomes the root bridge. If several devices in a network have the same priority, the
device whose MAC address has the lowest numeric value will become the root bridge.
Both parameters, bridge priority and MAC address together form the bridge identifier.
Since the root bridge manages all path changes, it should be located as centrally as
possible due to the delay of the frames. The value for the bridge priority is a whole
multiple of 4096 with a range of values from 0 to 32768.
• Bridge Address / Root Address
The bridge address shows the MAC address of the device and the root address shows
the MAC address of the root switch.
• Root Cost
Shows the path costs from the device to the root bridge.
• Bridge Status
Shows the status of the bridge, e.g. whether or not the device is the root bridge.
96
SCALANCE SC-600 Web Based Management (WBM)
Configuration Manual, 10/2021, C79000-G8976-C475-03