ZyXEL p-334 Manual Do Utilizador

Prestige 334 User’s Guide

Chapter 13 Remote Management Screens

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SNMP itself is a simple request/response protocol based on the manager/agent model. The 
manager issues a request and the agent returns responses using the following protocol 
operations:

• Get - Allows the manager to retrieve an object variable from the agent. 
• GetNext - Allows the manager to retrieve the next object variable from a table or list 

within an agent. In SNMPv1, when a manager wants to retrieve all elements of a table 
from an agent, it initiates a Get operation, followed by a series of GetNext operations. 

• Set - Allows the manager to set values for object variables within an agent. 
• Trap - Used by the agent to inform the manager of some events.

The Prestige supports MIB II that is defined in RFC-1213 and RFC-1215. The focus of the 
MIBs is to let administrators collect statistical data and monitor status and performance.

The Prestige will send traps to the SNMP manager when any one of the following events 
occurs:

To change your Prestige’s SNMP settings, click REMOTE MGMT, then the SNMP tab. The 
screen appears as shown.

Table 41   SNMP Traps

0

coldStart (defined in RFC-1215)

A trap is sent after booting (power on).

1

warmStart (defined in RFC-1215)

A trap is sent after booting (software reboot).

4

authenticationFailure (defined in 

RFC-1215)

A trap is sent to the manager when receiving any 

SNMP get or set requirements with the wrong 

community (password).

6

whyReboot (defined in ZYXEL-

MIB)

A trap is sent with the reason of restart before 

rebooting when the system is going to restart (warm 

start).

6a

For intentional reboot :

A trap is sent with the message "System reboot by 

user!" if reboot is done intentionally, (for example, 

download new files, CI command "sys reboot", etc.).

6b

For fatal error : 

A trap is sent with the message of the fatal code if the 

system reboots because of fatal errors.