Spanning Tree Protocol
Configuring RSTP Interface Settings
Cisco 220 Series Smart Switches Administration Guide Release 1.1.0.x
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To define the RSTP interface settings:
STEP 1
Set the STP operation mode to RSTP as described in the
section.
STEP 2
Click
Spanning Tree
>
RSTP Interface Settings
.
STEP 3
Select the interface type (Port or LAG) and click
Go
.
STEP 4
Select an interface and click
Edit
.
STEP 5
Enter the following information:
•
Interface
—Set the port or LAG to be configured.
•
Point-to-Point Administrative Status
—Define the link status. The available
options are:
-
Enable
—The port link type is point-to-point.
-
Disable
—The port link type is share.
-
Auto
—Automatically determines the port link type status by using the
port link up duplex mode (point-to-point for full duplex mode and share
for half duplex mode).
•
Point-to-Point Operational Status
—Displays the current link-type
operating status.
•
Role
—Displays the role of the interface 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.
-
Alternate
—Provides an alternate path to the Root Bridge from the root
interface.
-
Backup
—Provides a backup path to the designated port path toward the
Spanning Tree leaves. Backup ports occur when two ports are
connected in a loop by a point-to-point link. Backup ports also occur
when a LAN has two or more connections connected to a shared
segment.
-
Disabled
—The port is not participating in Spanning Tree.
