Cisco SPS208G User Manual

Spanning Tree
STP Port Settings
SPS208G/SPS224G4/SPS2024 Service Provider Switches User Guide 191
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The STP Port Settings Screen is divided into two areas:
• STP Port Parameters
• STP Port Table
The STP Port Parameters area contains the following fields:
• Interface — Define the port or LAG of this STP configuration. The possible
field values are:
- Unit No. — Indicates the stacking member on which this STP
configuration is defined.
- Port — Indicates the port on which this STP configuration is defined.
- LAG — Indicates the LAG on which this STP configuration is defined.
• Enable STP — Enable or disable STP on the port. The possible field values
are:
- Checked — Indicates that STP is enabled on the port.
- Unchecked — Indicates that STP is disabled on the port.
• Port Fast — Enable or disable Fast Link on the port. If Fast Link mode is
enabled for a port, the Port State is automatically placed in the Forwarding
state when the port link is up. Fast Link optimizes the STP protocol
convergence. STP convergence can take 30-60 seconds in large networks.
The possible field values are:
- Checked — Indicates that Fast Link is enabled on the port.
- Unchecked — Indicates that Fast Link is disabled on the port.
• Port State — Displays the current STP state of a port. If enabled, the port
state determines what forwarding action is taken on traffic. Possible port
states are:
- Disable — Indicates that STP is currently disabled on the port or if the
port is not active. The port forwards traffic while learning MAC
addresses.
- Blocking — Indicates that the port is currently blocked and cannot
forward traffic or learn MAC addresses.
- Listening — Indicates that the port is in Listening mode. The port cannot
forward traffic nor can it learn MAC addresses.

Cisco SPS208G Specifications

General

Brand	Cisco
Model	SPS208G
Category	Switch
Language	English