Lantronix
SM12XPA Web User Guide
33848 Rev. A
Page
141
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473
Bridge ID
: The Bridge ID of this Bridge instance.
Root ID
: The Bridge ID of the currently elected root bridge.
Root Port
: The switch port currently assigned the root port role.
Root Cost
: Root Path Cost. For the Root Bridge it is zero. For all other Bridges, it is the sum of the Port Path
Costs on the least cost path to the Root Bridge.
Topology Flag
: The current state of the Topology Change Flag of this Bridge instance.
Topology Change Last
: The time since last Topology Change occurred.
STP Port Status
Port
: The switch port number of the logical STP port.
CIST Role
: The current STP port role of the CIST port. The port role can be one of these values: AlternatePort,
Backup Port, RootPort, DesignatedPort, or Disabled.
CIST State
: The current STP port state of the CIST port. The port state can be one of these values: Blocking,
Learning, or Forwarding.
Uptime
: The time since the bridge port was last initialized.
CIST
: Click to next page “STP Detailed Bridge Status”.
STP Bridge Status
Bridge Instance
: The Bridge instance (e.g., CIST, MST1, etc.).
Bridge ID
: The Bridge ID of this Bridge instance.
Root ID
: The Bridge ID of the currently elected root bridge.
Root Port
: The switch port currently assigned the root port role.
Root Cost
: Root Path Cost. For the Root Bridge this is zero. For all other Bridges, it is the sum of the Port Path
Costs on the least cost path to the Root Bridge.
Regional Root
: The Bridge ID of the currently elected regional root bridge, inside the MSTP region of this bridge.
(
For the CIST instance only
).
Internal Root Cost
: The Regional Root Path Cost. For the Regional Root Bridge this is zero. For all other CIST
instances in the same MSTP region, it is the sum of the Internal Port Path Costs on the least cost path to the
Internal Root Bridge. (For the CIST instance only.)
Topology Flag
: The current state of the Topology Change Flag of this Bridge instance.
Topology Change Count
: The number of times where the topology change flag has been set (during a one-
second interval).
Topology Change Last
: The time passed since the Topology Flag was last set.
CIST Ports & Aggregations State
Port
: The switch port number of the logical STP port.
Port ID
: The port id as used by the STP protocol. This is the priority part and the logical port index of the bridge
port.