NETGEAR GS108T-200NAS Software Administration Manual page 120

GS108T and GS110TP Smart Switch Software Administration Manual
Table 3-6. Spanning Tree MST Port Status Fields
Field
Auto-calculated Port Path
Cost
Port ID
Port Up Time Since
Counters Last Cleared
Port Mode
Port Forwarding State
Port Role
Designated Root
Designated Cost
Designated Bridge
Designated Port
Click Refresh to update the screen with the latest MST information.
3-36
Description
Displays 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.
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.
Time since the counters were last cleared, displayed in Days, Hours,
Minutes, and Seconds.
Spanning Tree Protocol Administrative Mode associated with the port or port
channel. Possible values are Enable or Disable.
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
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.
Root Bridge for the selected MST instance. It is made up using the bridge
priority and the base MAC address of the bridge.
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.
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.
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.
v1.0, April 2010
Configuring Switching Information