S
PANNING
T
REE
P
ROTOCOL
C
ONFIGURATION
3-35
information (provided in the last configuration message) becomes the
designated port for the attached LAN. If it is a root port, a new root port
is selected from among the device ports attached to the network.
-Default: 20
- Minimum: The higher of 6 or [2 x (Hello Time + 1)]
- Maximum: The lower of 40 or [2 x (Forward Delay - 1)]
• Hello Time – Interval (in seconds) at which the root device transmits
a configuration message.
-Default: 2
- Minimum: 1
- Maximum: The lower of 10 or [(Max. Message Age / 2) -1]
• Forward Delay Time – The maximum time (in seconds) the root
device will wait before changing states (i.e., listening to learning to
forwarding). This delay is required because every device must receive
information about topology changes before it starts to forward frames.
In addition, each port needs time to listen for conflicting information
that would make it return to a blocking state; otherwise, temporary data
loops might result.
-Default: 15
- Minimum: The higher of 4 or [(Max. Message Age / 2) + 1]
-Maximum: 30
Web – Click Administrator
=>
Spanning Tree. Modify the required
attributes, and click Apply.
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