PT-7728 User’s Manual

Featured Functions

 

 

Forwarding Delay

 

 

 

 

 

 

 

 

 

 

 

Setting

Description

Factory Default

 

 

 

Numerical value input by

This specifies the amount of time this device

15 (sec.)

 

 

 

user

will wait before checking to see if it should

 

 

 

 

 

change to a different state.

 

 

 

 

Hello Time (sec.)

 

 

 

 

 

 

 

 

 

 

Setting

Description

Factory Default

 

 

 

Numerical value input by

This specifies the time interval between "hello"

2

 

 

 

user

messages broadcast by the root of the Spanning

 

 

 

 

 

Tree topology. The "hello" message is used to

 

 

 

 

 

check if the topology is healthy.

 

 

 

 

Max. Age (sec.)

 

 

 

 

 

 

 

 

 

 

Setting

Description

Factory Default

 

 

 

Numerical value input by

This specifies the amount of time to wait for a

20

 

 

 

user

"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.

 

 

 

 

Enable STP per Port

 

 

 

 

 

 

 

 

 

 

Setting

Description

Factory Default

 

 

 

Enable/Disable

This includes the selected port as a node on the

Disabled

 

 

 

 

Spanning Tree topology.

 

 

 

 

 

 

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

This specifies the port’s priority as a node on

128

 

 

 

by user

the Spanning Tree topology. Lower values

 

 

 

 

 

correspond to higher priority.

 

 

 

 

Port Cost

 

 

 

 

 

 

 

 

 

 

Setting

Description

Factory Default

 

 

 

Numerical value input by

This specifies the port cost. Higher costs

200000

 

 

 

user

correspond to lower suitability as a node for the

 

 

 

 

 

Spanning Tree topology.

 

 

3-33

Page 47
Image 47
Moxa Technologies PT-7728 Forwarding Delay, Hello Time sec, Max. Age sec, Enable STP per Port, Port Priority, Port Cost