iES28TG/iES28GF User Manual
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iS5 Communications Inc.
Port
The switch port number to which the following settings will be
applied.
STP Enabled
Check to enable STP for the port
Path Cost
Configures the path cost incurred by the port.
Auto
will set the path
cost according to the physical link speed by using the 802.1D-
recommended values.
Specific
allows you to enter a user-defined
value. The path cost is used when establishing an active topology for
the network. Lower path cost ports are chosen as forwarding ports in
favor of higher path cost ports. The range of valid values is 1 to
200000000.
Priority
Configures the priority for ports having identical port costs. (See
above).
OperEdge (state flag)
A flag indicating whether the port is connected directly to edge
devices or not (no bridges attached). Transiting to the forwarding state
is faster for edge ports (
operEdge
set to true) than other ports.
AdminEdge
Configures the operEdge flag to start as set or cleared.(the initial
operEdge state when a port is initialized).
AutoEdge
Check to enable the bridge to detect edges at the bridge port
automatically. This allows
operEdge
to be derived from whether BPDUs
are received on the port or not.
Restricted Role
When enabled, the port will not be selected as root port for 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, spanning trees will lose connectivity. It can be set by a
network administrator to prevent bridges outside a core region of the
network from influencing the active spanning tree topology because
those bridges are not under the full control of the administrator. This
feature is also known as Root Guard.
