Cisco 220 Series Smart Plus Administration Manual page 146

Spanning Tree Protocol
Configuring RSTP Interface Settings
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
Cisco 220 Series Smart Plus Switches Administration Guide Release 1.0.0.x
To define the RSTP interface settings:
Set the STP operation mode to RSTP described in the
and Global Settings
Click Spanning Tree > RSTP Interface Settings.
Select a port.
Activate Protocol Migration is only available after selecting the port
NOTE
connected to the bridge partner being tested.
If a link partner is discovered by using STP, click Activate Protocol Migration to
run a Protocol Migration test. This discovers whether the link partner using STP
still exists, and if so whether it has migrated to RSTP or MSTP. If it still exists as an
STP link, the device continues to communicate with it by using STP. Otherwise, if it
has been migrated to RSTP or MSTP, the device communicates with it using RSTP
or MSTP, respectively.
Select an interface, and click Edit.
Enter the following information:
• Interface—Set the port or LAG where RSTP is to be configured.
• Point-to-Point Administrative Status—Define the link status. The available
options are:
- Enable—This port is a RSTP edge port when this feature is enabled, and
brings it to Forwarding mode quickly (usually within 2 seconds).
- 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 rapid
speed.
- Auto—Automatically determines switch status by using RSTP BPDUs.
• Point-to-Point Operational Status—Displays the link-type operating
status.
• Role—Displays the role of the port that has been assigned by STP to
provide STP paths. The possible roles are:
- Root—Lowest cost path to forward packets to the Root Bridge.
- Designated—The port through which the bridge is connected to the LAN,
that provides the lowest cost path from the LAN to the Root Bridge.
section.
12
Configuring STP Status
144