SMC Networks SMC6724L3 manual Displaying Interface Settings, Field Attributes

SPANNING TREE ALGORITHM CONFIGURATION

CLI – This example enables Spanning Tree Protocol, and then sets the indicated attributes.

Console(config)#spanning-tree	4-147
Console(config)#spanning-tree mode rst	4-148
Console(config)#spanning-tree priority 40000	4-151
Console(config)#spanning-tree hello-time 5	4-150
Console(config)#spanning-tree max-age 38	4-150
Console(config)#spanning-tree forward-time 20	4-149
Console(config)#spanning-tree pathcost method long	4-152
Console(config)#spanning-tree transmission-limit 4	4-153
Console(config)#

Displaying Interface Settings

The STA Port Information and STA Trunk Information pages display the current status of ports and trunks in the Spanning Tree.

Field Attributes

•STA Status – Displays current state of this port within the Spanning Tree:

-Discarding - Port receives STA configuration messages, but does not forward packets.

-Learning - Port 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 - 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 discarding.

-All ports are discarding when the switch is booted, then some of them change state to learning, and then to forwarding.

•Forward Transitions – The number of times this port has transitioned from the Learning state to the Forwarding state.

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