iES24G Series User’s Manual
iS5 Communications Inc.
39
Label
Description
Port
The switch port number of the logical STP port.
STP Enabled
Controls whether STP is enabled on this switch port.
Path Cost
Controls the path cost incurred by the port. The Auto setting will set
the path cost as appropriate by the physical link speed, using the IEEE
802.1D recommended values. Using the Specific setting, a user-
defined value can be entered. The path cost is
used when establishing the active topology of the network. Lower path
cost ports are chosen as forwarding ports in favor of higher
path cost ports. Valid values are in the range 1 to 200000000.
Priority
Controls the port priority. This can be used to control priority of
ports having identical port cost. (See above).
OpenEdge(state flag)
Operational flag describing whether the port is connecting directly to
edge devices. (No Bridges attached). Transitioning to the forwarding
state is faster for edge ports (having OpenEdge true)
than for other ports.
AdminEdge
Controls whether the OpenEdge flag should start as being set or
cleared. (The initial OpenEdge state when a port is initialized).
AutoEdge
Controls whether the bridge should enable automatic edge
detection on the bridge port. This allows OpenEdge to be derived
from whether BPDU's are received on the port or not.
Restricted Role
If enabled, causes the port not to be selected as Root Port for the CIST
or any MSTI, even if it has the best spanning tree priority vector. Such a
port will be selected as an Alternate Port after the Root Port has been
selected. If set, it can cause lack of spanning tree connectivity. It can be
set by a network administrator to prevent bridges external to a core
region of the network influencing the spanning tree active topology,
possibly because those bridges are not under the full control of the
administrator. This feature is also known as Root Guard.
