Siemens SCALANCE W788-2 M12 - Page 340

Configuring with Web Based Management
6.7 "Layer 2" menu
SCALANCE W780/W740 to IEEE 802.11n Web Based Management
340 Configuration Manual, 08/2018, C79000-G8976-C267-13
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Path Cost
The path costs from this port to the root bridge. The path with the lowest value is selected
as the path. If several ports of a device have the same value, the port with the lowest port
number will be selected.
If the "Cost Calc." box has the value "0", the automatically calculated value is shown.
Otherwise, the value of the "Cost Calc." box is displayed.
The calculation of the path costs is largely based on the transmission speed. The higher
the achievable transmission speed is, the lower the value of the path costs.
Typical values for path costs with rapid spanning tree:
– 1000 Mbps = 20,000
– 100 Mbps = 200,000
– 10 Mbps = 2,000,000
The values can, however, also be set individually.
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State
Displays the current state of the port. The values are only displayed and cannot be
configured. The "State" parameter depends on the configured protocol. The following is
possible for status:
– Disabled
The port only receives and is not involved in STP, MSTP and RSTP.
– Discarding
In the "Discarding" mode, BPDU frames are received. Other incoming or outgoing
frames are discarded.
– Listening
In this status, BPDUs are both received and sent. The port is involved in the spanning
tree algorithm.
– Learning
Stage prior to the forwarding status, the port is actively learning the topology (in other
words, the node addresses).
– Forwarding
Following the reconfiguration time, the port is active in the network; it receives and
forwards data frames.
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Fwd. Trans
Specifies the number of changes from the "Discarding" status to the "Forwarding" status.
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Edge Type
Specify the type of edge port. You have the following options:
– "-"
Edge port is disabled. The port is treated as a "no EdgePort".
– Admin
Select this option when there is always an end device on this port. Otherwise a
reconfiguration of the network will be triggered each time a connection is changed.
– Auto
Select this option if you want a connected end device to be detected automatically at