Chapter 18 Remote MGMT

The managed devices contain object variables/managed objects that define each piece of information to be collected about a device. Examples of variables include such as number of packets received, node port status etc. A Management Information Base (MIB) is a collection of managed objects. SNMP allows a manager and agents to communicate for the purpose of accessing these objects.

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.

18.3.1Supported MIBs

The ZyXEL Device 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.

18.3.2 SNMP Traps

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

Table 105

SNMP Traps

 

TRAP #

TRAP NAME

DESCRIPTION

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

A trap is sent to the manager when receiving any

 

RFC-1215)

SNMP get or set requirements with the wrong

 

 

community (password).

 

 

 

6

whyReboot (defined in ZYXEL-

A trap is sent with the reason of restart before

 

MIB)

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.

 

 

 

18.3.3 Configuring SNMP

To change your ZyXEL Device’s SNMP settings, click Advanced > Remote MGMT > SNMP. The screen appears as shown.

Use this screen to control FTP access to your ZyXEL Device. To access this screen, click Management > Remote MGMT > SNMP.

 

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P-2302HWUDL-P1 Series User’s Guide