Dell-RMON

All MIBs › Dell-RMON

Organization: Dell

Last Updated: 2004-06-01

Category: Domain: Network Management, Vendor: Dell

Description: Extends RMON statistics collection with Dell-specific remote monitoring capabilities on switches.

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What Is Dell-RMON?

Dell-RMON is a Dell-branded (RADLAN-derived) extension of RMON (Remote Network Monitoring) providing history-based statistics collection on Dell switches. It exposes configuration and control data for RMON history collection: which data source (interface) to sample, how many history buckets are requested versus granted, the sampling interval, and ownership/status of each history-control entry. Its monitoring value lies in enabling longer-term performance trending on interfaces -- by configuring history buckets, an operator can later retrieve time-series interface statistics to spot bandwidth trends, errors, or utilization spikes -- though this module itself governs the control/configuration side of that collection rather than exposing hardware environmental data. It directly extends the IETF standard RMON MIB (RFC 2819) framework with vendor-specific version and quota controls. It is typically deployed on Dell managed switches where operators want to configure historical interface statistics collection beyond the default RMON quota limits. Engineers can download the Dell-RMON file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Dell-RMON. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Dell managed switches (RADLAN-based)

Monitoring Examples

An administrator would configure rlHistoryControlTable, indexed by rlHistoryControlIndex, setting rlHistoryControlDataSource to the interface of interest, rlHistoryControlBucketsRequested and reviewing rlHistoryControlBucketsGranted to confirm how many history samples were actually allocated, and rlHistoryControlInterval to set the sampling period. rlRmonControlHistoryControlMaxGlobalBuckets and rlRmonControlHistoryControlQuotaBucket would be checked when bucket requests are denied due to global RMON history quota exhaustion, revealing a resource-limit issue on the switch.

What Can Be Monitored

RMON history control data source per interface
history buckets requested vs. granted
history sampling interval
global RMON history bucket quota usage

Imported Objects

From Dell-MIB

rnd	MODULE-IDENTITY

From RMON-MIB

EntryStatus
OwnerString

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TEXTUAL-CONVENTION
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
rlRmonControl	1.3.6.1.4.1.89.49			The private MIB module definition for RND RMON MIB.
INT rlRmonControlMibVersion	1.3.6.1.4.1.89.49.1	INTEGER	read-only	The MIB's version. The current version is 1
INT rlRmonControlHistoryControlQuotaBucket	1.3.6.1.4.1.89.49.2	INTEGER	read-write	Maximum number of buckets to be used by each History Control group entry. changed to read only, value is derived from rsMaxRmonEtherHistoryEntrie
INT rlRmonControlHistoryControlMaxGlobalBuckets	1.3.6.1.4.1.89.49.3	INTEGER	read-only	Maximum number of buckets to be used by all History Control group entries together.
rlHistoryControlTable	1.3.6.1.4.1.89.49.4		not-accessible	A list of rlHistory control entries. This table is exactly like the corresponding RMON I History control group table, but is used to sample statistics of counters not specified by the RMON I statistics group.
rlHistoryControlEntry	1.3.6.1.4.1.89.49.4.1		not-accessible	A list of parameters that set up a periodic sampling of statistics. As an example, an instance of the rlHistoryControlInterval object might be named rlHistoryControlInterval.2
INT rlHistoryControlIndex	1.3.6.1.4.1.89.49.4.1.1	INTEGER	read-only	An index that uniquely identifies an entry in the rlHistoryControl table. Each such entry defines a set of samples at a particular interval for a sampled counter.
OID rlHistoryControlDataSource	1.3.6.1.4.1.89.49.4.1.2	OBJECT IDENTIFIER	read-write	This object identifies the source of the data for which historical data was collected and placed in the rlHistory table. This object may not be modified if the associated rlHistoryControlStatus object is equal to valid(1).
INT rlHistoryControlBucketsRequested	1.3.6.1.4.1.89.49.4.1.3	INTEGER	read-write	The requested number of discrete time intervals over which data is to be saved in the part of the rlHistory table associated with this rlHistoryControlEntry. When this object is created or modified, the probe should set rlHistoryControlBucketsGranted as closely to this object as is possible for the particular probe implementation and available resources.
INT rlHistoryControlBucketsGranted	1.3.6.1.4.1.89.49.4.1.4	INTEGER	read-only	The number of discrete sampling intervals over which data shall be saved in the part of the rlHistory table associated with this rlHistoryControlEntry. When the associated rlHistoryControlBucketsRequested object is created or modified, the probe should set this object as closely to the requested value as is possible for the particular probe implementation and available resources. The probe must not lower this value except as a result of a modification to the associated rlHistoryControlBucketsRequested object. There will be times when the actual number of buckets associated with this entry is less than the value of this object. In this case, at the end of each sampling interval, a new bucket will be added to the rlHistory table. When the number of buckets reaches the value of this object and a new bucket is to be added to the media-specific table, the oldest bucket associated with this rlHistoryControlEntry shall be deleted by the agent so that the new bucket can be added. When the value of this object changes to a value less than the current value, entries are deleted from the rlHistory table. Enough of the oldest of these entries shall be deleted by the agent so that their number remains less than or equal to the new value of this object. When the value of this object changes to a value greater than the current value, the number of associated rlHistory table entries may be allowed to grow.
INT rlHistoryControlInterval	1.3.6.1.4.1.89.49.4.1.5	INTEGER	read-write	The interval in seconds over which the data is sampled for each bucket in the part of the rlHistory table associated with this rlHistoryControlEntry. This interval can be set to any number of seconds between 1 and 3600 (1 hour). Because the counters in a bucket may overflow at their maximum value with no indication, a prudent manager will take into account the possibility of overflow in any of the associated counters. It is important to consider the minimum time in which any counter could overflow and set the rlHistoryControlInterval object to a value This object may not be modified if the associated rlHistoryControlStatus object is equal to valid(1).
STR rlHistoryControlOwner	1.3.6.1.4.1.89.49.4.1.6	OwnerString	read-write	The entity that configured this entry and is therefore using the resources assigned to it.
ENT rlHistoryControlStatus	1.3.6.1.4.1.89.49.4.1.7	EntryStatus	read-write	The status of this rlHistoryControl entry. Each instance of the rlHistory table associated with this rlHistoryControlEntry will be deleted by the agent if this rlHistoryControlEntry is not equal to valid(1).
rlHistoryTable	1.3.6.1.4.1.89.49.5		not-accessible	A list of history entries.
rlHistoryEntry	1.3.6.1.4.1.89.49.5.1		not-accessible	An historical statistics sample of a counter specified by the corresponding history control entry. This sample is associated with the rlHistoryControlEntry which set up the parameters for a regular collection of these samples. As an example, an instance of the rlHistoryPkts object might be named rlHistoryPkts.2.89
INT rlHistoryIndex	1.3.6.1.4.1.89.49.5.1.1	INTEGER	read-only	The history of which this entry is a part. The history identified by a particular value of this index is the same history as identified by the same value of rlHistoryControlIndex.
INT rlHistorySampleIndex	1.3.6.1.4.1.89.49.5.1.2	INTEGER	read-only	An index that uniquely identifies the particular sample this entry represents among all samples associated with the same rlHistoryControlEntry. This index starts at 1 and increases by one as each new sample is taken.
TIK rlHistoryIntervalStart	1.3.6.1.4.1.89.49.5.1.3	TimeTicks	read-only	The value of sysUpTime at the start of the interval over which this sample was measured. If the probe keeps track of the time of day, it should start the first sample of the history at a time such that when the next hour of the day begins, a sample is started at that instant. Note that following this rule may require the probe to delay collecting the first sample of the history, as each sample must be of the same interval. Also note that the sample which is currently being collected is not accessible in this table until the end of its interval.
C32 rlHistoryValue	1.3.6.1.4.1.89.49.5.1.4	Counter32	read-only	The value of the sampled counter at the time of this sampling.
INT rlControlHistoryControlQuotaBucket	1.3.6.1.4.1.89.49.6	INTEGER	read-write	Maximum number of buckets to be used by each rlHistoryControlTable entry.
INT rlControlHistoryControlMaxGlobalBuckets	1.3.6.1.4.1.89.49.7	INTEGER	read-write	Maximum number of buckets to be used by all rlHistoryControlTable entries together.
INT rlControlHistoryMaxEntries	1.3.6.1.4.1.89.49.8	INTEGER	read-write	Maximum number of rlHistoryTable entries.

RFC description

Dell private RMON extension MIB providing enhanced monitoring and statistics collection beyond standard RMON.

Start monitoring Dell managed switch, RADLAN-based (RMON history statistics) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download Dell-RMON

What Is Dell-RMON?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description