Gigabit Ethernet Switch User's Manual

WGS3 Layer 3 Switch User’s Manual
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Parameter Description
Type Shows port type as:
100TX : 10BASE-T/ 100BASE-TX
1000T : 1000BASE-T
1000FX: 1000Base-SX/1000Base-LX
Status Displays current state of this port within the Spanning Tree:
Disabled - No link has been established on this port. Otherwise, the 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 a topology change, starts transmitting
configuration messages, but does not yet 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 - The port forwards packets, and continues the 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.
DesignatedPort
(ID)
The priority and number of the port on the designated bridging device through which this
switch must communicate with the root of the Spanning Tree.