● 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 bridge.
● Root Cost
The path costs from this device to the root bridge.
● Bridge Status
Shows the status of the bridge, e.g. whether or not the device is the root bridge.
● Regional root priority (available only with MSTP)
For a description, see Bridge priority / Root priority
● Regional root address (available only with MSTP)
Shows the MAC address of the regional root bridge.
● Regional Root Cost (available only with MSTP)
Shows the path costs from this device to the regional root bridge.
The table contains the following boxes:
● Port
Shows the port via which the device communicates.
● Role
Shows the status of the port. The following values are possible:
– Disabled
The port was removed manually from the spanning tree and will no longer be taken into
account by the spanning tree.
– Designated
The ports leading away from the root bridge.
– Alternate
The port with an alternative route to a network segment
– Backup
If a switch has several ports to the same network segment, the "poorer" Port becomes
the backup port.
– Root
The port that provides the best route to the root bridge.
– Master
This port points to a root bridge located outside the MST region.
Configuring with Web Based Management
6.4 "Information" menu
SCALANCE W1780/W1740 according to IEEE 802.11ac Web Based Management
Configuration Manual, 11/2019, C79000-G8976-C485-03 101
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