SMC Networks SMC8612XL3 F 1.0.1.3 T, C, A, 3-137

S PANNING T REE A LGORITHM C ONFIGURATION
3-137
- All ports are discarding when the switch is booted, then some of
them change state to learning, and the n to forwarding.
•Forward Transitions – The number of times this port has
transitioned from the Learning state to the Forwardi ng state.
•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 – The bridge priority and MAC address of the
device through which this port must communicate to reach the root of
the Spanning Tree.
•Designated Port – The port priority and number of the port on the
designated bridging device through which this switch must
communicate with the root of the Spanning Tree.
•Oper Link Type – The operational point-to-point status of the LAN
segment attached to this interface. This parameter is determined by
manual configuration or by auto-detection, as described for Admin
Link Type in STA Port Configuration on page3-140.
•Oper Edge Port – This parameter is initialized to the setting for
Admin Edge Port in STA Port Configuration on page 3-140 (i.e., true
or false), but will be set to false if a BPDU is received, indicating that
another bridge is attached to this port.
•Port Role – Roles are assigned according to whether the port is part
of the active topology connecting the bridge to the root bridge (i.e.,
root port), connecting a LAN through the bridge to the root bridge
(i.e., designated port); or is an alternate or backup port that may
provide connectivity if other bridges, bridge ports, or LANs fail or are
removed. The role is set to disabled (i.e., disabled port) if a port has
no role within the spanning tree.
•Trunk Member – Indicates if a port is a member of a trunk.