SMC Networks TigerStack 100 1000BASE-X Management Manual page 118

W -B M
EB ASED ANAGEMENT
Parameter
Forward
Transitions
Designated Cost
Designated Bridge The priority and MAC address of the device through which
Designated Port
3-24
Description
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 number of times the port has changed status to
forwarding state.
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.
this port must communicate to reach the root of the spanning
tree.
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.