Accton Technology CheetahSwitch Workgroup, 4508 manual

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.

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