| Viewing the Current Spanning Tree Configuration |
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Parameter | Description |
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Status | Displays the current state of this port within the spanning |
| tree: |
| Disabled – Port has been disabled by the user or has failed |
| diagnostics. |
| Blocking – Port receives STA configuration messages, but |
| does not forward packets. |
| Listening – Port will leave blocking state due to topology |
| change, starts transmitting configuration messages, but does |
| not yet forward packets. |
| Learning – Has transmitted configuration messages for an |
| interval set by the Forward Delay parameter without |
| receiving contradictory information. Port address table is |
| cleared, and the port begins learning addresses. |
| Forwarding – The port forwards packets, and continues |
| learning addresses. |
| The rules defining port status are: |
| • A port on a network segment with no other STA |
| compliant bridging device is always forwarding. |
| • If two ports of a switch are connected to the same |
| segment and there is no other STA device attached to this |
| segment, the port with the smaller ID forwards packets |
| and the other is blocked. |
| • All ports are blocked when the switch is booted, then |
| some of them change state to listening, to learning, and |
| then to forwarding. |
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Forward Transitions | Number of frames forwarded out the port. |
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Designated Cost | The cost for a packet to travel from this port to the root in |
| the current spanning tree configuration. The slower the |
| media, the higher the cost. |
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Device Control Menu Screens
