User Manual

6.
Select whether to display physical interfaces, LAGs, or both by clicking one of the
following links above the table heading:
•
1: Only physical interfaces are displayed. This is the default setting.
• LAG: Only LAGs are displayed.
•
All: Both physical interfaces and LAGs are displayed.
7.
To refresh the page, click the Refresh button.
The following table describes the nonconfigurable fields on the page.
Table 59. CST interface status information
DescriptionField
The physical interface or LAG that is associated with the CST.Interface
The port identifier for port in the CST, which is created from the port
priority and the interface number.
Port ID
Indicates the current STP state of the interface. If enabled, the port state
determines what forwarding action is taken on traffic. Possible port states
are as follows:
•
Disabled: STP is currently disabled on the interface. The interface
forwards traffic while learning MAC addresses.
•
Blocking: The interface is currently blocked and cannot be used to
forward traffic or learn MAC addresses.
•
Listening: The interface is currently in the listening mode. The interface
cannot forward traffic nor can it learn MAC addresses.
•
Learning. The interface is currently in the learning mode. The interface
cannot forward traffic. However, it can learn new MAC addresses.
•
Forwarding: The interface is currently in the forwarding mode. The
interface can forward traffic and learn new MAC addresses
Port Forwarding State
Each MST bridge port that is enabled is assigned a port role for each
spanning tree. The port role is one of the following: Root, Designated,
Alternate, Backup, Master, or Disabled.
Port Role
The root bridge for the CST, which is created from the bridge priority and
the base MAC address of the bridge.
Designated Root
The path cost offered to the LAN by the designated port.Designated Cost
The bridge identifier of the bridge with the designated port. This identifier
is created from the bridge priority and the base MAC address of the
bridge.
Designated Bridge
The port identifier on the designated bridge that offers the lowest cost
to the LAN. This identifier is created from the port priority and the interface
number of the port.
Designated Port
Main User Manual235Configure Switching Information
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