User Manual

Configure Switching Information
212
M4200 and M4300 Series ProSAFE Managed Switches Web Management User Manual
The following table describes the CST Status information displayed on the page.
Table 78. CST Port Status
Field Description
Interface Identify the physical or port channel interfaces associated with VLANs
associated with the CST.
Port ID The port identifier for the specified port within the CST. It is made up
from the port priority and the interface number of the port.
Port Forwarding State The Forwarding State of this port.
Port Role Each MST Bridge Port that is enabled is assigned a Port Role for each
spanning tree. The port role is one of the following values: Root Port,
Designated Port, Alternate Port, Backup Port, Master Port or
Disabled Port.
Designated Root Root Bridge for the CST. It is made up using the bridge priority and the
base MAC address of the bridge.
Designated Cost Path Cost offered to the LAN by the Designated Port.
Designated Bridge Bridge Identifier of the bridge with the Designated Port. It is made up
using the bridge priority and the base MAC address of the bridge.
Designated Port Port Identifier on the Designated Bridge that offers the lowest cost to
the LAN. It is made up from the port priority and the interface number of
the port.
Topology Change Acknowledge Identifies whether the topology change acknowledgement flag is set for
the next BPDU to be transmitted for this port. It is either True or False.
Edge port Indicates whether the port is enabled as an edge port. It takes the value
Enabled or Disabled.
Point-to-point MAC Derived value of the point-to-point status.
CST Regional Root Bridge Identifier of the CST Regional Root. It is made up using the
bridge priority and the base MAC address of the bridge.
CST Path Cost Path Cost to the CST Regional Root.
Port Up Time Since Counters Last
Cleared
Time since the counters were last cleared, displayed in Days, Hours,
Minutes, and Seconds.
Loop Inconsistent State This parameter identifies whether the port is in loop inconsistent state
or not.
Transitions Into Loop Inconsistent
State
The number of times this interface transitioned into loop inconsistent
state.
Transitions Out Of Loop
Inconsistent State
The number of times this interface transitioned out of loop inconsistent
state.