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PT-7728 User’s Manual Featured Functions
3-33
Forwarding Delay
Setting Description Factory Default
Numerical value input by
user
This specifies the amount of time this device
will wait before checking to see if it should
change to a different state.
15 (sec.)
Hello Time (sec.)
Setting Description Factory Default
Numerical value input by
user
This specifies the time interval between "hello"
messages broadcast by the root of the Spanning
Tree topology. The "hello" message is used to
check if the topology is healthy.
2
Max. Age (sec.)
Setting Description Factory Default
Numerical value input by
user
This specifies the amount of time to wait for a
"hello" message from the root before the
PT-7728 will reconfigure itself as a root. When
two or more devices on the network are
recognized as a root, the devices will
renegotiate to set up a new Spanning Tree
topology.
20
Enable STP per Port
Setting Description Factory Default
Enable/Disable This includes the selected port as a node on the
Spanning Tree topology.
Disabled
NOTE
We suggest that you disable the Spanning Tree Protocol for ports that are connected directly to a
device (PLC, RTU, etc.) as opposed to network equipment. This will prevent unnecessary
negotiation.
Port Priority
Setting Description Factory Default
Numerical value selected
by user
This specifies the port’s priority as a node on
the Spanning Tree topology. Lower values
correspond to higher priority.
128
Port Cost
Setting Description Factory Default
Numerical value input by
user
This specifies the port cost. Higher costs
correspond to lower suitability as a node for the
Spanning Tree topology.
200000