Allied Telesis FORMULA 8200 - Manual (Page 127)

FORMULA 8200 User’s Guide
5-49
Table 5-19 defines the fields in the display.
Table 5-19 Spanning Tree Parameters by the VBRIDGE/SHOW/BRIDGE Command
Parameter Description
Spanning Tree Status Indicates whether Spanning Tree is enabled for this VLAN
Priority Bridge priority is used by the Bridge ID to determine which bridge will be
the root bridge. The Bridge ID consists of this bridge priority concatenated
with a 6-byte MAC address. You can set the bridge priority by entering a
decimal number from 0 to 65,535. Zero is the highest priority.
Bridge ID The bridge identification number
Designated Root The root bridge as determined by the Spanning Tree Protocol
Cost to Root Bridge The path cost to the root bridge from this bridge
Root Port The port ID of the port that offers the lowest cost path to the root
Hold Time The interval length (in seconds) during which no more than two
configuration BPDUs shall be transmitted
Topology Changes The total number of topology changes detected by this bridge since the
counter was last reset or initialized
Last Topology Change The amount of time since the last topology change was detected
Bridge Aging Timer The timeout period in seconds for aging out dynamically learned
forwarding information
Local and Global Parameters
Max Age The maximum age (in seconds) of information learned on any port before
being discarded
Forward Delay This time value (in seconds) controls how fast a port changes when
moving towards the Forwarding state. The value determines how long the
port stays in each of the Listening and Learning states, which precede the
Forwarding state. This value is also used, when a topology change has
been detected and is underway, to age out all dynamic entries in the
Forwarding Database.
Hello Time The time interval between the transmission of Configuration BPDUs by a
bridge that is attempting to become the root or is the root