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CheetahSwitch Workgroup-4508
Parameter Description
Type Shows port type as 1000SX (1000BASE-SX).
Status Displays the current state of this port within the spanning tree:
Disabled Port has been disabled by the user or has failed diagnostics.
Blocked 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.
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.
Designated Bridge (ID) The priority and MAC address of the device through which this port must
communicate to reach the root of the spanning tree.
Designated Port (ID) The port on the designated bridging device through which this switch must
communicate with the root of the spanning tree.