GS716Tv2 and GS724Tv3 Software Administration Manual
3-30
Configuring Switching Information
v1.0, July 2009
2.
Click
Cancel
to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
3.
Click
Refresh
to update the screen with the latest MST information.
4.
If you make any configuration changes, click
Apply
to apply the new settings to the switch.
Configuration changes take effect immediately.
Port Forwarding State
Indicates the current STP state of a port. If enabled, the port state
determines what forwarding action is taken on traffic. Possible port
states are:
•
Disabled:
STP is currently disabled on the port. The port forwards
traffic while learning MAC addresses.
•
Blocking:
The port is currently blocked and cannot be used to
forward traffic or learn MAC addresses.
•
Listening:
The port is currently in the listening mode. The port
cannot forward traffic nor can it learn MAC addresses.
•
Learning:
The port is currently in the learning mode. The port cannot
forward traffic, however, it can learn new MAC addresses.
•
Forwarding:
The port is currently in the forwarding mode. The port
can forward traffic and learn new MAC addresses
Port Role
Each MST Bridge Port that is enabled is assigned a Port Role for each
spanning tree. The port role will be one of the following values:
Root
Port
,
Designated Port
,
Alternate Port
,
Backup Port
,
Master Port
or
Disabled Port
.
Designated Root
Root Bridge for the selected MST instance. It is made up using the
bridge priority and the base MAC address of the bridge.
Designated Cost
Displays cost of the port participating in the STP topology. Ports with a
lower cost are less likely to be blocked if STP detects loops.
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.
Table
3-17. Spanning Tree MST Port Status Fields (continued)
Field
Description