S
PANNING
T
REE
A
LGORITHM
C
ONFIGURATION
2-99
- All ports are discarding when the switch is booted, then some of
them change state to learning, and then to forwarding.
• Forward Transitions – The number of times this port has changed
from the Learning state to the Forwarding 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 page 2-102.
• Oper Edge Port – This parameter is initialized to the setting for
Admin Edge Port in STA Port Configuration on page 2-102 (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.
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