ZyXEL Communications OMC-2301, User Manual

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Chapter 13 Access Control
OMC-2301 User’s Guide
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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:
13.3.1 Supported MIBs
MIBs let administrators collect statistics and monitor status and performance.
The OMC supports the following MIBs:
• SNMP MIB II (RFC 1213)
• RFC 1157 SNMP v1
• RFC 1155 SMI
• RFC 2674 SNMPv2, SNMPv2c
• RFC 1757 RMON
• IEEE 802.3ah OAM
• SNMPv2, SNMPv2c or later version, compliant with RFC 2011 SNMPv2 MIB for IP,
RFC 2012 SNMPv2 MIB for TCP, RFC 2013 SNMPv2 MIB for UDP
13.3.2 SNMP Traps
The OMC sends traps to an SNMP manager when an event occurs. SNMP traps supported are
outlined in the following table.
Table 34 SNMP Commands
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.
Table 35 SNMP Traps
OBJECT LABEL OBJECT ID DESCRIPTION
SNMPv2 Traps
Cold Start 1.3.6.1.6.3.1.1.5.
1
This trap is sent when the OMC is turned on.
WarmStart 1.3.6.1.6.3.1.1.5.
2
This trap is sent when the OMC 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.