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Port Settings
STP and RSTP help guard against the formation of loops
in an Ethernet network topology. A loop occurs when
nodes transmit packets to each other over more than
one data path. Packets can become caught in repetitious
cycles that needlessly consume network bandwidth
whichthensignicantlyreducenetworkperformance.
With STP, you can set it up on a port per port basis
totofurtherhelpcongureyournetworktopology.
The Switch allows each port to have its own spanning
tree,andsowillrequiresomeofitsownconguration
settings.
Port:
The port or trunked ports you wish to
congure.
External Path Cost:
Thisdenesametricthatindicatesthe
relative cost of forwarding packets to
thespeciedportlist.Theportcostcan
be set automatically or as a metric value.
The default value is 0 (auto). Setting 0
for the external cost will automatically
set the speed for forwarding packets to
thespeciedport(s)inthelistforoptimal
efciency.Thedefaultportcostfora
100Mbps port is 200,000 and the default
port cost for a Gigabit port is 20000.
Enter a value between 1 and 200000000
to determine the External Cost. The lower
the number, the greater the probability
the port will be chosen to forward
packets.
Edge Port: Indicate whether the port is Enabled or
Disabled.
•Yes – Designates the port as an edge port.
• No – There is no edge port status.
P2P MAC:
A P2P port must operate in full duplex.
Like edge ports, P2P ports transition to a
forwardingstaterapidly,thusbenetingfrom
RSTP. Enable P2P for the device to establish
a point-to-point link, or specify for the device
to automatically establish a point-to-point
link. Select Yes or No from the list for point-
to-point(P2P) .
• Yes – Restricted in that a P2P port must
operate in full-duplex.
• No –There is no P2P port status.
Migration Start:
When operating in RSTP mode, enable this
function to force the port to use the new
MST/RST BPDUs and restart the migration
delay timer.
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