Netgear GS748AT GS724AT/GS748AT Software Administration Manual - Page 111

Rapid STP

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GS700AT Smart Switch Software Administration Manual - Enable - Enable Fast Link on the interface. - Disable - Disable Fast Link on the interface. • Port State - Displays the current STP state of a port. If enabled, the port state determines what forwarding action is taken on traffic. Possible port states are: - Forwarding - STP is enabled on the port, and the port is forwarding packets based on the STP topology. - Disabled - STP is currently disabled on the port. The port forwards traffic while learning MAC addresses. - Blocking - The port is currently blocked and cannot forward traffic or learn MAC addresses. - Listening - The port is in Listening mode. The port cannot forward traffic nor can it learn MAC addresses. - Learning - The port is in Learning mode. The port cannot forward traffic, however it can learn new MAC addresses. • Speed - Displays the speed at which the port is operating. • Path Cost - Enter the method used to assign default path cost to STP ports. The possible field range is 1 - 200000000. The default path cost assigned to an interface varies according to the selected CST configuration method (Hello Time, Max Age or Forward Delay). • Priority - Select the port priority value. When switches or ports are running STP, each is assigned a priority. After exchanging BPDUs, the device with the lowest priority value becomes the Root Port. The port priority has a range of 0-240 in increments of 16. The default value is 128. 2. Select the STP Status and Fast Link status in the provided fields. 3. Enter the Path Cost in the provided field. 4. Select the Priority from the list in the provided field. 5. Click APPLY to update the device. Rapid STP While Classic STP prevents forwarding loops in a general network topology, convergence can take between 30-60 seconds. This time may delay detecting possible loops and propagating status topology changes. Rapid Spanning Tree Protocol (RSTP) detects and uses network topologies that Configuring Switching Settings v1.0, October 2008 4-34

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GS700AT Smart Switch Software Administration Manual
Configuring Switching Settings
4-34
v1.0, October 2008
–
Enable – Enable Fast Link on the interface.
–
Disable – Disable Fast Link on the interface.
•
Port State
– Displays the current STP state of a port. If enabled, the port state determines
what forwarding action is taken on traffic. Possible port states are:
–
Forwarding – STP is enabled on the port, and the port is forwarding packets based on
the STP topology.
–
Disabled – STP is currently disabled on the port. The port forwards traffic while
learning MAC addresses.
–
Blocking – The port is currently blocked and cannot forward traffic or learn MAC
addresses.
–
Listening – The port is in Listening mode. The port cannot forward traffic nor can it
learn MAC addresses.
–
Learning – The port is in Learning mode. The port cannot forward traffic, however it
can learn new MAC addresses.
•
Speed
– Displays the speed at which the port is operating.
•
Path Cost
– Enter the method used to assign default path cost to STP ports. The possible
field range is 1 - 200000000. The default path cost assigned to an interface varies
according to the selected CST configuration method (Hello Time, Max Age or Forward
Delay).
•
Priority
– Select the port priority value. When switches or ports are running STP, each is
assigned a priority. After exchanging BPDUs, the device with the lowest priority value
becomes the Root Port. The port priority has a range of 0-240 in increments of 16. The
default value is 128.
2.
Select the
STP Status
and
Fast Link
status in the provided fields.
3.
Enter the
Path Cost
in the provided field.
4.
Select the
Priority
from the list in the provided field.
5.
Click
APPLY
to update the device.
Rapid STP
While Classic STP prevents forwarding loops in a general network topology, convergence can
take between 30-60 seconds. This time may delay detecting possible loops and propagating status
topology changes. Rapid Spanning Tree Protocol (RSTP) detects and uses network topologies that