D-Link DWL-8600AP User Manual page 246

D-Link UWS User Manual
Table 133: Spanning Tree CST Configuration/Status Fields (Cont.)
Field
Bridge Max Age (secs)
Bridge Hello Time (secs)
Bridge Forward Delay (secs)
Spanning Tree Maximum
Hops
BPDU Guard
BPUD Filter
Spanning Tree Tx Hold Count Configure the maximum number of BPDUs the bridge is allowed to send
Bridge Identifier
Time Since Topology Change Displays the total amount of time since the last topographic change. The time
Topology Changes Counts
Topology Change
Designated Root
Root Path Cost
Root Port
Max Age
Forward Delay
Hold Time
CST Regional Root
CST Path Cost
D-Link
Oct. 2015
Description
Specifies the switch maximum age time, which indicates the amount of time
in seconds a bridge waits before implementing a topological change. The valid
range is 6-40, and the value must be less than or equal to (2 * Bridge Forward
Delay) – 1 and greater than or equal to 2 * (Bridge Hello Time +1). The default
value is 20.
Specifies the switch Hello time, which indicates the amount of time in seconds
a root bridge waits between configuration messages. The valid range is 1-10,
and the default value is 2. The value must be less than or equal to (Bridge Max
Age / 2) – 1. The default hello time value is 2.
Specifies the switch forward delay time, which indicates the amount of time
in seconds a bridge remains in a listening and learning state before forwarding
packets. The value must be greater or equal to (Bridge Max Age / 2) + 1. The
time range is from 4 seconds to 30 seconds. The default value is 15.
Specifies the maximum number of bridge hops the information for a particular
CST instance can travel before being discarded.
Enable or disable the BPDU Guard.The switches behind the edge ports that
have BPDU guard enabled will not be able to influence the overall topology.
Using the BPDU Guard feature can help enforce the domain borders and keep
the active topology be consistent and predictable.
Enable or disable the BPDU Filter. When BPDU filtering is enabled, the port
drops the BPDUs received.
within the hello time window.The default value is 6.
The bridge identifier for the CST. It is made up using the bridge priority and the
base MAC address of the bridge.
is displayed in hour/minute/second format, for example, 5 hours 10 minutes
and 4 seconds.
Displays the total amount of state changes that have occurred.
Indicates whether a topology change is in progress on any port assigned to the
CST. The possible values are True or False.
Displays the bridge identifier of the root bridge, which is made up from the
bridge priority and the base MAC address of the bridge.
Displays the cost of the path from this bridge to the designated root.
Indicates the root port of the selected instance.
Shows the path Cost to the Designated Root for the CST.
Shows the derived value of the Root Port Bridge Forward Delay parameter.
Indicates the minimum time between transmission of Configuration BPDUs.
Shows the priority and base MAC address of the CST Regional Root.
Shows the path Cost to the CST tree Regional Root.
Configuring Spanning Tree Protocol
Unified Wired and Wireless Access System
Page 246