ZyXEL Communications P-861H-G1, User Manual, Page: 104 / 341

Prestige 861H Series User’s Guide
103 Chapter 9 Remote Management Configuration
• 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.
9.5.1 Supported MIBs
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.
9.5.2 SNMP Traps
The Prestige will send traps to the SNMP manager when any one of the following events
occurs:
Table 24
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 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
9.6 ICMP
If an outside user attempts to probe an unsupported port on your Prestige, an ICMP response
packet is automatically returned. This allows the outside user to know the Prestige exists.
Your Prestige supports anti-probing, which prevents the ICMP response packet from being
sent. This keeps outsiders from discovering your Prestige when unsupported ports are probed.