ZyXEL Communications NWA3000-N User Manual

Chapter 15 System

NWA3000-N Series User’s Guide

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 NWA3000-N series AP supports MIB II that is defined in RFC-1213 and RFC-
1215. The NWA3000-N series AP also supports private MIBs (ZYXEL-ES-
CAPWAP.MIB, ZYXEL-ES-COMMON.MIB, ZYXEL-ES-HYBRIDAP.MIB, ZYXEL-ES-
PROWLAN.MIB, ZYXEL-ES-RFMGMT.MIB, ZYXEL-ES-SMI.MIB, and ZYXEL-ES-
WIRELESS.MIB) to collect information about CPU and memory usage and VPN 
total throughput. The focus of the MIBs is to let administrators collect statistical 
data and monitor status and performance. You can download the NWA3000-N 
series AP’s MIBs from www.zyxel.com.

The NWA3000-N series AP will send traps to the SNMP manager when any one of 
the following events occurs.

Table 77   SNMP Traps

Cold Start

1.3.6.1.6.3.1.1.5.1

This trap is sent when the NWA3000-N 
series AP is turned on or an agent restarts.

linkDown

1.3.6.1.6.3.1.1.5.3

This trap is sent when the Ethernet link is 
down.

linkUp

1.3.6.1.6.3.1.1.5.4

This trap is sent when the Ethernet link is 
up.

authenticationFailure 1.3.6.1.6.3.1.1.5.5

This trap is sent when an SNMP request 
comes from non-authenticated hosts.