Spanning Tree
Defining MSTP Interface Settings
231 Cisco Small Business 300 Series Managed Switch Administration Guide
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-Backup—The interface 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 established connections to a shared
segment.
-Disabled—The interface does not participate in the Spanning Tree.
-
Boundary—The port on this instance is a boundary port. It inherits its
state from instance 0 and can be viewed on the STP Interface Settings
page.
•Mode—Displays the current Spanning Tree mode.
-Classic STP—Classic STP is enabled on the port.
-Rapid STP—Rapid STP is enabled on the port.
-MSTP—MSTP is enabled on the port.
•Type—Displays the MST type of the port.
-Boundary—A Boundary port attaches MST bridges to a LAN in a remote
region. If the port is a boundary port, it also indicates whether the device
on the other side of the link is working in RSTP or STP mode.
-Internal—The port is an internal port.
•Designated Bridge ID—Displays the ID number of the bridge that connects
the link or shared LAN to the root.
•Designated Port ID—Displays the Port ID number on the designated bridge
that connects the link or the shared LAN to the root.
•Designated Cost—Displays the cost of the port participating in the STP
topology. Ports with a lower cost are less likely to be blocked if STP detects
loops.
•Remaining Hops—Displays the hops remaining to the next destination.
•Forward Transitions—Displays the number of times the port has changed
from the Forwarding state to the Blocking state.
STEP 6 Click Apply. The Running Configuration file is updated.