User Manual

S350 Series 8-Port Gigabit Ethernet Smart Switch Models GS308T and GS310TP
Configure Switching User Manual146
9. Click the Apply button.
Your settings are saved.
10. To refresh the page with the latest information about the switch, click the Update
button.
The following table describes the read-only MST port configuration information displayed on
the Spanning T
ree CST Configuration page.
Table 32. MST port status information
Field Description
Auto Calculated Port Path
Cost
Indicates whether the path cost is automatically calculated (Enabled) or not
(Disabled). Path cost is calculated based on the link speed of the port if the
configured value for Port Path Cost is zero.
Port ID The port identifier for the specified port within the selected MST instance. It is
made up from the port priority and the interface number of the port.
Port Up Time Since Counters
Last Cleared
The time since the counters were last cleared, displayed in days, hours,
minutes, and seconds.
Port Mode The Spanning Tree Protocol administrative mode that is associated with the port
or port channel.
The option is Enable or Disable.
Port Forwarding State The current STP state of a port. If enabled, the port state determines what
forwarding action is taken on traffic.
The options are as follows:
• Disabled. STP is currently disabled on the port.
The port forwards traf
fic
while learning MAC addresses.
• Discarding.
The port is currently blocked.
The port cannot forward traffic
nor can it learn MAC addresses.
• Manual Forwarding. STP is currently disabled on the port.
The port
forwards traf
fic while learning 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 can be Root, Designated,
Alternate, Backup, Master, or
Disabled.
Designated Root The 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 The 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 The 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 The 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.