| Item |
| Description |
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| Indicates if the interface is acting as the root port of the switch. The possible |
| Root Guard |
| field values are: |
|
| z Enabled: Indicates Root Guard is enabled on the port | |
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| z Disabled: Indicates Root Guard is disabled on the port. |
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| Displays the current STP state of a port. If enabled, the port state determines |
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| what action is taken on traffic. Possible port states are: |
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| z Disable: Indicates that STP is currently disabled on the port. The port |
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| forwards traffic while learning MAC addresses. |
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| z Blocking: Indicates that the port is currently blocked and cannot forward |
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| traffic or learn MAC addresses. Blocking is displayed when Classic STP |
| Port State |
| is enabled. |
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| z Listening: Indicates that the port is in listening mode. The port cannot | |
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| forward traffic nor can it learn MAC addresses. |
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| z Learning: Indicates that the port is in learning mode. The port cannot |
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| forward traffic, however it can learn new MAC addresses. |
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| z Forwarding: Indicates that the port is in forwarding mode. The port can |
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| forward traffic and learn new MAC addresses. |
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| z Discarding: Indicates that the port is in discarding mode. The port is |
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| listening to BPDUs, and discards any other frames it receives. |
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| Displays the port role assigned by the STP algorithm to provide to STP |
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| paths. The possible field values are: |
|
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| z Disable: Indicates that the port or LAG is currently disabled on the port |
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| z Designated: The port or LAG through which the designated switch is |
| Port Role |
| attached to the LAN. |
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| z Alternate: Provides an alternate path to the root switch from the root | |
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| interface. |
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| z Backup: With the designated port being blocked, the backup port |
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| becomes the new designated port fast and begins to forward data |
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| seamlessly. |
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| z Root: Provides the lowest cost path to forward packets to the root switch. |
| Speed |
| Indicates the speed at which the port is operating. |
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| Indicates the port contribution to the root path cost. The path cost is adjusted |
| Path Cost |
| to a higher or lower value, and is used to forward traffic when a path is |
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| Indicates the priority value of the port. The priority value influences the port |
| Priority |
| choice when a bridge has two ports connected in a loop. The priority range is |
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| between |
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| Indicates whether a |
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| permitted to establish a |
| Link Type |
| z Auto: Enables the switch to establish automatically |
|
| z Point to Point: Indicates if a | |
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| the port. Ports set to Full Duplex modes are considered |
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| port links. |
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| z Shared: Enables the switch to establish a shared link. |
| Designated Bridge |
| Indicates the bridge priority and the MAC Address of the designated bridge. |
| ID |
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| Designated Port ID | Indicates the selected port priority and interface. | |
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| Designated Cost |
| Indicates the cost of the port participating in the STP topology. Ports with a |
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| lower cost are less likely to be blocked if STP detects loops. | |
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| Forward Transitions |
| Indicates the number of times the port has changed from Forwarding state to |
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| Blocking state. | |
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