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To configure RSTPs:
1.
Click Configuration > Spanning Tree Management > Spanning Tree.
2.
Select Rapid STP on the Spanning Tree Mode line.
3.
Click Configuration > Spanning Tree Management > Spanning Tree > RSTP Interfaces.
4.
Select an interface, and click Edit.
5.
Enter the interface settings:
•
Point to Point Mode - Define the point-to-point link status. Ports defined as full
duplex are considered point-to-point port links.
o
Enable - This port is an RSTP edge port when this feature is enabled, and is
brought to Forwarding Mode quickly (usually within 2 seconds).
o
Disable - The port is not considered point-to-point for RSTP purposes,
which means that STP works on it at regular speed, as opposed to high
speed.
o
Auto - Automatically determines the device status by using RSTP BPDUs
•
Edge Port Mode - Enables or disables Fast Link on the port. If Fast Link Mode is
enabled on a port, the port is automatically set to forwarding state when the port
link is up. Fast Link optimizes the STP protocol convergence.
The options:
o
Enable - Enables Fast Link immediately.
o
Disable - Disables Fast Link.
o
Auto - Enables Fast Link a few seconds after the interface becomes active.
This allows STP to resolve loops before enabling Fast Link.
Note—It is recommended to set the value to Auto so that the device sets the port
to fast link mode if a host is connected to it, or sets it as a regular STP port if
connected to another device. This helps avoid loops.
•
STP Mode - Select either STP or RSTP.
•
Point to Point Status-Displays the point-to-point operational status if the Point to
Point Administrative Status is set to Auto.
•
Port Role - Displays the role of the port that was assigned by STP to provide STP
paths. Possible roles:
o
Root - Lowest cost path to forward packets to the root bridge.
o
Designated - The interface through which the bridge is connected to the
LAN, which provides the lowest cost path from the LAN to the root bridge.
o
Alternate - Provides an alternate path to the root bridge from the root
interface.
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