IES-1000 User’s Guide

Base (MIB) is a collection of managed objects. SNMP allows 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:

 

Table 16-1 SNMP
COMMAND

DESCRIPTION

 

 

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.

 

 

16.1.1Supported MIBs

The IES-1000 supports MIB II (defined in RFC-1213 and RFC-1215). The IES-1000 can also respond with specific data from the ZyXEL private MIBs (zyxel.mib, zyxel-AS.mib, zyxel-AS-ATM.mib, zyxel- AESCommon.mib and zyxel-SESCommon.mib). MIBs let administrators collect statistics and monitor status and performance.

16.1.2Supported Traps

The network module supports the following traps

♦coldStart Trap (defined in RFC 1215): This trap is sent at system start-up.

♦authenticationFailure Trap (defined in RFC 1215):

This trap is sent if a request arrives with an invalid community string.

♦linkUp Trap (defined in RFC 1215): This trap is sent when a DSL port is up.

♦linkDown Trap (defined in RFC 1215): This trap is sent when a DSL port is down.

♦overheat Trap (defined in ZYXEL-MIB):

This trap is sent periodically when a network module is overheated.

♦overheatOver Trap (defined in ZYXEL-MIB):

This trap is sent when the network module is no longer overheated.

16-2

SNMP