ZyXEL Communications 1 - Manual (Page 63)

NetAtlas Enterprise 1.00 User’s Guide
Chapter 5 Status 62
5.2 STP Status
5.2.1 Introduction to Spanning Tree Protocol (STP)
STP detects and breaks network loops and provides backup links between switches, bridges or
routers. It allows a switch to interact with other STP-compliant switches in your network to
ensure that only one route exists between any two stations on the network.
5.2.1.1 STP Terminology
The root bridge is the base of the spanning tree; it is the bridge with the lowest identifier value
(MAC address).
Min This field displays the minimum voltage recorded at this sensor in volts.
Threshold This field displays the minimum voltage percentage at which the switch should work.
Status NORMAL indicates that the voltage is within an acceptable operating range at this
point; otherwise ERROR is displayed. ABSENT indicates that there is no power
reading at a sensor(s).
Temperature The switch has temperature sensors that are capable of detecting and reporting if the
temperature rises above the threshold. You may choose the temperature unit
(Centigrade or Fahrenheit).
Celsius Select this option to display the temperature in degrees Centigrade.
Fahrenheit Select this option to display the temperature in degrees Fahrenheit.
Index This field displays the temperature sensor number.
Current Value This shows the current temperature at this sensor.
Max This field displays the maximum temperature recorded at this sensor.
Min This field displays the minimum temperature recorded at this sensor.
Threshold This field displays the upper temperature limit at this sensor.
Status This field displays NORMAL for temperatures below the threshold and ERROR for
those above.
Polling The text box displays how often (in seconds) this screen refreshes. You may change
the refresh interval by typing a new number in the text box and then clicking Apply
button.
Close Click Close to close the screen.
Table 13 Status: Hardware Status (continued)
LABEL DESCRIPTION