Siemens SCALANCE XB-200 Configuration Manual page 58

Configuring with Web Based Management
5.3 The "Information" menu
The table has the following columns:
● Port
Shows the port via which the device communicates. The port is made up of the module
number and the port number, for example port 0.1 is module 0, port 1.
● Role
Shows the status of the port. The following values are possible:
– Disabled
– Designated
– Alternate
– Backup
– Root
– Master
● Status
Displays the current status of the port. The values are only displayed. The parameter
depends on the configured protocol. The following values are possible:
– Discarding
– Listening
– Learning
– Forwarding
● Oper. Version
Shows the compatibility mode of Spanning Tree used by the port.
● Priority
If the path calculated by the spanning tree is possible over several ports of a device, the
port with the highest priority (in other words the lowest value for this parameter) is
selected. A value between 0 and 240 can be entered for the priority in steps of 16. If you
enter a value that cannot be divided by 16, the value is automatically adapted. The
default is 128.
58
The port was removed manually from the spanning tree and will no longer be taken
into account by the spanning tree.
The ports leading away from the root bridge.
The port with an alternative path to a network segment
If a switch has several ports to the same network segment, the "poorer" Port becomes
the backup port.
The port that provides the best route to the root bridge.
This port points to a root bridge located outside the MST region.
The port receives BPDU frames. Other incoming or outgoing frames are discarded.
The port receives and sends BPDU frames. The port is involved in the spanning tree
algorithm. Other outgoing and incoming frames are discarded.
The port actively learns the topology; in other words, the node addresses. Other
outgoing and incoming frames are discarded.
Following the reconfiguration time, the port is active in the network. The port receives
and sends data frames.
SCALANCE XB-200/XC-200/XP-200 Web Based Management
Configuration Manual, 07/2016, C79000-G8976-C360-04