SMC Networks TigerStack 100 1000BASE-X Management Manual page 60

U S
SING THE YSTEM
Parameter
Type
Status
Designated
Cost
2-42
C
ONFIGURATION
Description
Shows port type as:
100FX : 100BASE-FX
1000SX : 1000BASE-SX
1000LX : 1000BASE-LX
1000T : 1000BASE-T
Displays current state of this port within the Spanning Tree:
No Link No link has been established on this port.
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 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
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.
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.
P
ROGRAM