RDN-CABLE-SPECTRUM-GROUP-MIB

All MIBs › RDN-CABLE-SPECTRUM-GROUP-MIB

Organization: Motorola

Last Updated: 2002-05-25

Category: DOCSIS and Cable

Description: Manages cable spectrum group configuration and upstream channel assignment on Motorola BSR CMTS platforms.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is RDN-CABLE-SPECTRUM-GROUP-MIB?

RDN-CABLE-SPECTRUM-GROUP-MIB is a vendor enterprise MIB, associated with Motorola/General Instrument BSR Cable Modem Termination System platforms, for managing cable spectrum groups under the MCNS/DOCSIS framework, controlling upstream channel/frequency assignment and channel-hopping behavior. It defines spectrum group configuration (name, ID, guard band), frequency-hopping policy (hop period, flap/error thresholds, rollback enable), and data-collection interval/resolution settings. It is used to monitor upstream RF plant health: the hop thresholds and rollback settings reveal how the CMTS software responds to upstream channel degradation such as flapping or high error rates, a software-driven mechanism for handling RF hardware/plant impairments. It is built on the MCNS/DOCSIS cable modem specifications and is used alongside the standard DOCS-IF-MIB for cable interface statistics. It is deployed on Motorola/Arris BSR-series CMTS platforms in cable operator headends managing DOCSIS upstream spectrum. Engineers can download the RDN-CABLE-SPECTRUM-GROUP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RDN-CABLE-SPECTRUM-GROUP-MIB. 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

Motorola/Arris BSR-series CMTS

Monitoring Examples

An admin inspects rdnSpectrumGroupTable/rdnSpectrumGroupEntry fields such as rdnSpectrumGroupHopThresholdFlap and rdnSpectrumGroupHopThresholdError to see the error/flap thresholds that trigger an automatic upstream channel hop. rdnSpectrumGroupHopRollbackEnable confirms whether the CMTS will roll back to the original channel if conditions improve. rdnSpectrumDataCollectInterval and rdnSpectrumDataCollectResolution show how frequently spectrum data is sampled, useful when diagnosing intermittent upstream noise.

What Can Be Monitored

spectrum group configuration
channel hop flap/error thresholds
hop rollback setting
spectrum data collection interval/resolution

Imported Objects

From IF-MIB

ifIndex

OBJECT-TYPE

From RDN-CABLE-SPECTRUM-MIB

rdnCableSpectrumObjects

OBJECT-IDENTITY

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DateAndTime
DisplayString
RowStatus
TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using rdnOfflineModemCount OID:

Select a Motorola/Arris BSR-series CMT (DOCSIS upstream spectrum group/channel-hopping configuration) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type rdnOfflineModemCount into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. It reports the number of offline modems for this spectrum group. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is an Integer32-type OID, Value bounds is the most useful condition here — trigger an alert if the count changes from its expected baseline, since that would indicate the underlying set of items changed unexpectedly. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
rdnCableSpectrumGroup	1.3.6.1.4.1.4981.6.1.2			This is the MIB Module for Cable Spectrum Group Management for MCNS compliant Cable Modem Termination Systems (CMTS).
rdnSpectrumGroupTable	1.3.6.1.4.1.4981.6.1.2.1		not-accessible	This table keeps the records of spectrum groups. These groups can be configured and activated by the spectrum manager and used by the CMTS upstream port for frequency hopping.
rdnSpectrumGroupEntry	1.3.6.1.4.1.4981.6.1.2.1.1		not-accessible	List of attributes for an entry in the rdnSpectrumGroupEntry. An entry in this table exists for each spectrum group that has been configured by the spectrum manager.
STR rdnSpectrumGroupName	1.3.6.1.4.1.4981.6.1.2.1.1.1	DisplayString	read-only	The text name (index) of the spectrum group.
U32 rdnSpectrumGroupId	1.3.6.1.4.1.4981.6.1.2.1.1.2	Unsigned32	read-only	The number index for the spectrum group.
U32 rdnSpectrumGroupHopPeriod	1.3.6.1.4.1.4981.6.1.2.1.1.3	Unsigned32	read-create	The rate at which the frequency hop takes place. This would be useful in preventing excessive hops. Unit is in second.
U32 rdnSpectrumGroupHopThresholdFlap	1.3.6.1.4.1.4981.6.1.2.1.1.4	Unsigned32	read-create	The CM flap rate percentage threshold that controls the hopping frequency. The hopping only happens when the percentage of flap CMs is higher than this threshold. Value 0 means the flap threshold hop disabled
U32 rdnSpectrumGroupHopThresholdError	1.3.6.1.4.1.4981.6.1.2.1.1.5	Unsigned32	read-create	The FEC error rate percentage threshold that controls the hopping frequency. The hopping only happens when the error rate percentage is higher than this threshold. The unit is 1/1000.
INT rdnSpectrumGroupHopRollbackEnable	1.3.6.1.4.1.4981.6.1.2.1.1.6	INTEGER	read-create	This field controls the spectrum rollback option when the original channel quality recovers. The rollback is allowed when this field is enabled. The rollback is not allowed when this field is set to disable.
U32 rdnSpectrumDataCollectResolution	1.3.6.1.4.1.4981.6.1.2.1.1.7	Unsigned32	read-create	The spectrum data collection resolution, in Hz.
U32 rdnSpectrumDataCollectInterval	1.3.6.1.4.1.4981.6.1.2.1.1.8	Unsigned32	read-create	The spectrum data collection interval, in second. Minimum value 60 seconds. Value 0 means the collection is disabled.
U32 rdnSpectrumGroupGuardBand	1.3.6.1.4.1.4981.6.1.2.1.1.9	Unsigned32	read-create	The minimum spectrum separation between upstream channels in the same spectrum group, in Hz.
ROW rdnSpectrumGroupRowStatus	1.3.6.1.4.1.4981.6.1.2.1.1.10	RowStatus	read-create	Controls and reflects the status of rows in this table. This field is used to control the addition and deletion of a spectrum group.
I32 rdnOfflineModemCountEx	1.3.6.1.4.1.4981.6.1.2.1.1.11	Integer32	read-only	Number of offline modems for this spectrum group
I32 rdnOnlineModemCount	1.3.6.1.4.1.4981.6.1.2.1.1.12	Integer32	read-only	Number of online modems for this spectrum group
I32 rdnActiveModemCount	1.3.6.1.4.1.4981.6.1.2.1.1.13	Integer32	read-only	Number of active modems for this spectrum group
I32 rdnRegisteredModemCount	1.3.6.1.4.1.4981.6.1.2.1.1.14	Integer32	read-only	Number of registered modems for this spectrum group
I32 rdnProvisionedModemCount	1.3.6.1.4.1.4981.6.1.2.1.1.15	Integer32	read-only	Number of provisioned modems for this spectrum group
I32 rdnUnregisteredModemCount	1.3.6.1.4.1.4981.6.1.2.1.1.16	Integer32	read-only	Number of Unregistered modems for this spectrum group
rdnSpectrumBandSchedTable	1.3.6.1.4.1.4981.6.1.2.2		not-accessible	This table keeps the records of spectrum band scheduled for a specific spectrum group.
rdnSpectrumBandSchedEntry	1.3.6.1.4.1.4981.6.1.2.2.1		not-accessible	List of attributes for an entry in the rdnSpectrumBandScheEntry.
U32 rdnSpectrumBandSchedId	1.3.6.1.4.1.4981.6.1.2.2.1.1	Unsigned32	not-accessible	The identifier for the band schedule, it is the second index for the spectrum band schedule table.
U32 rdnSpectrumBandSchedAction	1.3.6.1.4.1.4981.6.1.2.2.1.2	Unsigned32	read-only	The action on the specified frequency band. The third index of this band schedule table. Band add (1), band delete (2).
U32 rdnSpectrumBandFreqLow	1.3.6.1.4.1.4981.6.1.2.2.1.3	Unsigned32	read-create	The spectrum band low frequency in Hz. The lower bound is 5 MHz for North American standard, is 5 MHz for European standard.
U32 rdnSpectrumBandFreqHigh	1.3.6.1.4.1.4981.6.1.2.2.1.4	Unsigned32	read-create	The spectrum band high frequency in Hz. This value must be at least 200000 Hz higher than the band low frequency. The upper bound is 42 MHz for North American standard, is 65 MHz for European standard.
SCH rdnSpectrumBandSchedWeekDay	1.3.6.1.4.1.4981.6.1.2.2.1.5	SchedulingWeekDay	read-create	The week day of the band schedule.
U32 rdnSpectrumBandSchedHour	1.3.6.1.4.1.4981.6.1.2.2.1.6	Unsigned32	read-create	The hour of the band schedule (in 24-hour format).
U32 rdnSpectrumBandSchedMinute	1.3.6.1.4.1.4981.6.1.2.2.1.7	Unsigned32	read-create	The minute of the band schedule.
U32 rdnSpectrumBandSchedSecond	1.3.6.1.4.1.4981.6.1.2.2.1.8	Unsigned32	read-create	The second of the band schedule.
ROW rdnSpectrumBandSchedRowStatus	1.3.6.1.4.1.4981.6.1.2.2.1.9	RowStatus	read-create	The row status that controls the addition and deletion of the band schedule entry.
rdnSpectrumHopTable	1.3.6.1.4.1.4981.6.1.2.3		not-accessible	This table keeps the records of spectrum hopping rules for a specific spectrum group.
rdnSpectrumHopEntry	1.3.6.1.4.1.4981.6.1.2.3.1		not-accessible	List of attributes for an entry in the rdnSpectrumHopTable.
U32 rdnSpectrumHopId	1.3.6.1.4.1.4981.6.1.2.3.1.1	Unsigned32	not-accessible	The index for the spectrum hop rule table.
SPE rdnSpectrumHopSelection	1.3.6.1.4.1.4981.6.1.2.3.1.2	SpectrumHopSelections	read-create	Identifies the selection of the action for this spectrum hop rule.
INT rdnSpectrumHopPriority	1.3.6.1.4.1.4981.6.1.2.3.1.3	INTEGER	read-create	Identifies the priority for this spectrum hop policy. The default value is 128. The range is 1 to 255.
U32 rdnSpectrumHopFrequency	1.3.6.1.4.1.4981.6.1.2.3.1.4	Unsigned32	read-create	Identifies the center frequency for the spectrum hop schedule entry. The hop can be specified with a discrete center frequency or with a band but not both in the same group.
U32 rdnSpectrumHopBandLow	1.3.6.1.4.1.4981.6.1.2.3.1.5	Unsigned32	read-create	The start frequency for the individual spectrum hop.
U32 rdnSpectrumHopBandHigh	1.3.6.1.4.1.4981.6.1.2.3.1.6	Unsigned32	read-create	The stop frequency for the individual spectrum hop. This value must be at least 200000 Hz higher than the start frequency.
INT rdnSpectrumHopChannelWidth	1.3.6.1.4.1.4981.6.1.2.3.1.7	INTEGER	read-create	Identifies the channel width change for this individual spectrum hop. The valid band width is 200000 Hz, 400000 Hz, 800000 Hz, 1600000 Hz, 3200000 Hz
INT rdnSpectrumHopPowerLevel	1.3.6.1.4.1.4981.6.1.2.3.1.8	INTEGER	read-create	Identifies a power level change for this individual spectrum hop. Different channel width has different power level range, for 200 KHz, for 400 KHz, for 800 KHz, for 1600 KHz, for 3200 KHz. For power default, the range is for all the channel widths. The unit is in tenths of a dBmV.
INT rdnSpectrumHopModulationProfile	1.3.6.1.4.1.4981.6.1.2.3.1.9	INTEGER	read-create	Identifies the modulation profile change for this individual spectrum hop.
ROW rdnSpectrumHopRowStatus	1.3.6.1.4.1.4981.6.1.2.3.1.10	RowStatus	read-create	The row status that controls the add and deletion of the spectrum hop rule entry.
rdnSpectrumMemberChannelTable	1.3.6.1.4.1.4981.6.1.2.4		not-accessible	This table keeps the records of the associations between upstream channels and spectrum groups
rdnSpectrumMemberChannelEntry	1.3.6.1.4.1.4981.6.1.2.4.1		not-accessible	List of attributes for an entry in the RdnSpectrumMemberChannelEntry. It is indexed by ifIndex.
INT rdnUsChannelId	1.3.6.1.4.1.4981.6.1.2.4.1.1	INTEGER	read-only	The upstream channel ID.
U32 rdnMemChSpectrumGroupId	1.3.6.1.4.1.4981.6.1.2.4.1.2	Unsigned32	read-write	The ID for the spectrum group that is associated with this upstream channel. Value 0 means no association.
STR rdnMemChSpectrumGroupName	1.3.6.1.4.1.4981.6.1.2.4.1.3	DisplayString	read-only	The text name of the associated spectrum group.
rdnSpectrumDataTable	1.3.6.1.4.1.4981.6.1.2.5		not-accessible	This table stores the noise and error rate for the different frequency bands.
rdnSpectrumDataEntry	1.3.6.1.4.1.4981.6.1.2.5.1		not-accessible	List of attributes for an entry in the rdnSpectrumDataEntry.
INT rdnSpectrumDataIndex	1.3.6.1.4.1.4981.6.1.2.5.1.1	INTEGER	read-only	The internal index of the spectrum data
INT rdnSpecDataUsChannelId	1.3.6.1.4.1.4981.6.1.2.5.1.2	INTEGER	read-only	The upstream channel ID.
U32 rdnSpectrumDataStartFrequency	1.3.6.1.4.1.4981.6.1.2.5.1.3	Unsigned32	read-only	Start Frequency of the spectrum data collection
INT rdnSpectrumDataResolution	1.3.6.1.4.1.4981.6.1.2.5.1.4	INTEGER	read-only	Resolution of the spectrum data collection in Hz
INT rdnSpectrumDataSamples	1.3.6.1.4.1.4981.6.1.2.5.1.5	INTEGER	read-only	Number of data samples used in this spectrum data collection period
DAT rdnSpectrumDataLastUpdate	1.3.6.1.4.1.4981.6.1.2.5.1.6	DateAndTime	read-only	Date and time when this collection data was last updated
SPE rdnSpectrumDataArray	1.3.6.1.4.1.4981.6.1.2.5.1.7	SpecDataArray	read-only	The data array that holds the spectrum data.
rdnSpectrumQualityTable	1.3.6.1.4.1.4981.6.1.2.6		not-accessible	This table stores the spectrum quality information.
rdnSpectrumQualityEntry	1.3.6.1.4.1.4981.6.1.2.6.1		not-accessible	List of attributes for an entry in the rdnSpectrumDataEntry.
INT rdnSpecQualityUsChId	1.3.6.1.4.1.4981.6.1.2.6.1.1	INTEGER	read-only	Identifies the upstream channel id for which the spectrum signal quality is gathered.
DAT rdnSpectrumQualityDataLastUpdate	1.3.6.1.4.1.4981.6.1.2.6.1.2	DateAndTime	read-only	Date and time when this data was last updated
INT rdnSpectrumDataInBandPower	1.3.6.1.4.1.4981.6.1.2.6.1.3	INTEGER	read-only	The in-band power for this frequency band. The unit is the tenths of dBmV.
U32 rdnSpectrumTotCodeWord	1.3.6.1.4.1.4981.6.1.2.6.1.4	Unsigned32	read-only	The total number of code words transfer through this interface
U32 rdnSpectrumErrorCodeWord	1.3.6.1.4.1.4981.6.1.2.6.1.5	Unsigned32	read-only	The uncorrectable error code words received through this interface.
rdnSpectrumMapTable	1.3.6.1.4.1.4981.6.1.2.7		not-accessible	This table keeps the records of spectrum usage.
rdnSpectrumMapEntry	1.3.6.1.4.1.4981.6.1.2.7.1		not-accessible	List of attributes for an entry in the rdnSpectrumMapEntry.
INT rdnSpectrumMapIndex	1.3.6.1.4.1.4981.6.1.2.7.1.1	INTEGER	not-accessible	Identifies an entry in the spectrum map table
U32 rdnSpectrumMapStartFrequency	1.3.6.1.4.1.4981.6.1.2.7.1.2	Unsigned32	read-only	The start frequency of the current spectrum band.
U32 rdnSpectrumMapStopFrequency	1.3.6.1.4.1.4981.6.1.2.7.1.3	Unsigned32	read-only	The stop frequency of the current spectrum band.
INT rdnSpectrumMapStatus	1.3.6.1.4.1.4981.6.1.2.7.1.4	INTEGER	read-only	The spectrum band status. null (0), available (1), occupied (2), admin-down (3)

RFC description

Manages spectrum group configuration and frequency agility on cable modem termination systems.

Start monitoring Motorola/Arris BSR-series CMTS (DOCSIS upstream spectrum group/channel-hopping configuration) 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 RDN-CABLE-SPECTRUM-GROUP-MIB