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USER GUIDE - Rev.5 (January 2018)
The specific equipment configuration parameters are:
•
Enable.
A simple checkbox parameter to indicate whether the STP must be
executed or not.
•
Version.
This establishes which of the possible protocol versions will be executed.
STP or RSTP (Rapid STP).
•
Bridge Priority.
This sets the priority of the equipment communicating with the root
equipment.
•
Max Age.
The maximum time during which the equipment considers the last BPDU
message received as valid. In the case of the stipulated time expiring, the
equipment assumes there has been a topological change and initiates the
topological change communication process. The default value is 20 seconds, and
the range admitted is between 6 and 40 seconds.
•
Hello Time.
This parameter establishes the time between sending BPDU
messages (the STP protocol messages). The default and maximum value is
2 seconds.
•
Forward Delay.
This parameter is the maximum period of time for an interface to
be in the listening and learning states. The default value for this period is 15
seconds, and the range admitted is between 4 and 30 seconds.
•
Tx Hold Count.
This establishes the maximum number of BPDU packets that can
be transmitted in one second. The default value is 6 and the admitted range is
between 1 and 10.
The configuration parameters for each port are:
•
Priority.
This establishes the port priority. If there are two or more ports with one
cost, the priority allows the root port of the equipment to be selected.
•
Cost.
This establishes the cost associated with the port. Selecting the root port of
the equipment is directly related to the lower cost of the different ports in relation to
the root equipment.
•
Edge.
This parameter indicates the operating mode of the interface with respect to
the STP. Interfaces connected to client equipment, i.e., equipment that is not level
2 switching equipment and which therefore does not execute STP or give rise to
the creation of loops may be booted directly to a traffic transmission situation
(
on
mode), and on the contrary interfaces that are directly connected to level 2
switching equipment and are therefore prone to close loops must be booted in the
accept user traffic mode (
off
mode). A third mode exists,
auto
, in which the
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