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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.