SNMP MIBs
©2008 Allied Telesis Inc. All rights reserved.
Software Version 5.2.1
AlliedWare Plus
TM
Operating System Software Reference C613-50003-00 REV E
56.15
RMON MIB
RFC 2819,
Remote Network Monitoring Management Information Base
, defines a portion of the
Management Information Base (MIB) for managing remote network monitoring devices.
Objects defined in this MIB reside in the mib(1) subtree (
Figure 56-8
), and have the object
identifier rmon ({ mib-2 16 }). These objects are used when the particular media being used to
realize an interface is an Ethernet interface.
Figure 56-8: RMON in the subtree of the Internet-standard Management Information Base (MIB)
Implementation
The switch implements the following objects in the RMON MIB:
■
The Statistics group contains objects that collect statistics measured by the probe for each
monitored Ethernet interface on the device. Statistics include the total number of packets
received, the size distribution of the packets, types and number of bad packets, and packet
collisions. The switch implements the etherStatsTable of the Statistics group.
■
The History group contains objects that store periodic statistical samples from the
Ethernet network. The switch implements the historyControlTable of the History group.
■
The Alarm group contains objects that periodically collect statistical samples of variables
from the probe and compare them to previously configured thresholds, to decide if an
event is generated. A hysteresis mechanism is used to limit the number of events
generated. The switch implements the alarmTable in the Alarm group.
■
The Event group contains objects that control the generation and notification of events,
and whether a log is to be created. The switch implements the eventTable in the Event
group.
The RMON MIB gathers statistics while SNMP is enabled. For information about SNMP and
commands for configuring SNMP and RMON, see
Chapter 54, SNMP Introduction
,
Chapter 55, SNMP Commands
, and
Chapter 58, RMON Commands
.
interfaces (2)
ip (4)
internet (1)
enterprises (1)
directory (1)
private (4)
experimental (3)
mgmt (2)
egp (8)
cmot (9)
udp (7)
icmp (5)
at (3)
tcp (6)
ospf (14)
appletalk (13)
ifExtensions (12)
transmission (10)
system (1)
snmp (11)
rmon (16)
MIB9
mib-2 (1)