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re-configures the spanning-tree topology and reestablishes the link by
activating the standby path.
Spanning-Tree Protocol operation is transparent to end stations, which
are unaware whether they are connected to a single LAN segment or a
switched LAN of multiple segments.
STP related parameters
Priority : A value to identify the root bridge. The bridge with the lowest
value has the highest priority and is selected as the root.
MAC Address : The MAC address of the switch as a unique identifier
to the network.
Max Age : The number of seconds a bridge waits without receiving
Spanning Tree protocol configuration messages before attempting a
reconfiguration. Maximum Age Timer measures the age of the received
protocol information recorded for a port and ensures that this informa-
tion is discarded when its age limit exceeds the value of the maximum age
parameter recorded by the switch. The time-out value for this timer is the
maximum age parameter of the switches.
Hello Time : The number of seconds between the transmission of Span-
ning Tree protocol configuration messages. It determines how often the
switch broadcasts its hello message to other switches.
Forward Delay Time : The number of seconds a port waits before chang-
ing from its Spanning Tree Protocol learning and listening states to the
forwarding state. Forward Delay Timer Monitors the time spent by a port
in the learning and listening states. The time-out value is the forward
delay parameter of
Spanning tree port states
Listening : Switches send messages to one another to establish the
network topology and the optimal paths to the different segments of
the network. Other data is not transmitted.
Blocking : The switch enters the Blocking State if a path with higher
priority is found to exist during the Listening State. Normal data is not
transmitted.
