Cisco Small Business 200, Руководство администратора

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Spanning Tree
Configuring Rapid Spanning Tree Settings
Cisco Small Business 200 Series Smart Switch Administration Guide 200
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the device continues to communicate with it by using STP. Otherwise, if it has been
migrated to RSTP, the device communicates with it using RSTP.
STEP 5
Select an interface, and click Edit.
STEP 6
Enter the parameters
• Interface —Set the interface, and specify the port or LAG where RSTP is to
be configured.
• Point to Point Administrative Status —Define the point-to-point link status.
Ports defined as Full Duplex are considered Point-to-Point port links.
- Enable —This port is an RSTP edge port when this feature is enabled, and
is brought 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 high
speed.
- Auto —Automatically determines the device status by using RSTP
BPDUs.
• Point to Point Operational Status —Displays the Point-to-Point operational
status if the Point to Point Administrative Status is set to Auto.
• Role —Displays the role of the port that was assigned by STP to provide STP
paths. The possible roles are:
-
Root
—Lowest cost path to forward packets to the Root Bridge.
- 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.
-
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. This provides a configuration in which two ports
are connected in a loop by a point-to-point link. Backup ports are also
used when a LAN has two or more established connections to a shared
segment.
-
Disabled
—The port is not participating in Spanning Tree.
• Mode —Displays the current Spanning Tree mode: Classic STP or RSTP.