CADANT-CMTS-MAC-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCADANT-CMTS-MAC-MIB

Organization: Arris Group, Inc.

Last Updated: 2015-09-08

Category: DOCSIS and Cable, Vendor: ARRIS

Description: Manages MAC-layer operations and cable modem registration state on ARRIS/Cadant CMTS including MAC domain and cable modem tracking.

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 CADANT-CMTS-MAC-MIB?

CADANT-CMTS-MAC-MIB is an ARRIS/Cadant proprietary MIB for the Cadant Cable Modem Termination System (CMTS), part of the DOCSIS cable broadband access technology area. It exposes MAC-layer cable modem tracking data, mirroring and supplementing the standard DOCS-IF-MIB's cable-modem status table with Cadant-specific per-modem registration and ranging detail. It is used heavily for monitoring software/protocol status of the access network: cable modem registration state, DOCSIS version, downstream/upstream channel assignment, and stability counters like ranging, provisioning, and registration "flaps" (retries) plus the timestamp of the last flap, which together reveal unstable or failing modems. It has an explicit dependency on DOCS-IF-MIB, reusing its docsIfCmtsCmStatusIndex as the index for these Cadant-specific tables. It is deployed on ARRIS/Cadant CMTS chassis in cable-operator headends managing large populations of subscriber cable modems, and operators typically download CADANT-CMTS-MAC-MIB together with DOCS-IF-MIB when provisioning a new CMTS monitoring template.

IPNetwork Monitor allows you to monitor SNMP objects defined in CADANT-CMTS-MAC-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

  • ARRIS/Cadant Cable Modem Termination System (CMTS)

Monitoring Examples

An operator would poll cadIfCmtsCmStatusTable/cadIfCmtsCmStatusEntry keyed by cadIfCmtsCmStatusMacAddress to see per-modem cadIfCmtsCmStatusDownChannelIfIndex/cadIfCmtsCmStatusUpChannelIfIndex assignments and cadIfCmtsCmStatusValue (registration state). A rising count in cadIfCmtsCmStatusRangFlaps, cadIfCmtsCmStatusProvFlaps, or cadIfCmtsCmStatusRegFlaps combined with a recent cadIfCmtsCmStatusLastFlapTime flags a cable modem with an unstable RF path or provisioning issue needing field investigation.

What Can Be Monitored

  • cable modem registration state
  • downstream/upstream channel assignment
  • DOCSIS version per modem
  • ranging flap count
  • provisioning flap count
  • registration flap count and last flap time
Imported Objects

From CADANT-CMTS-DOWNCHANNEL-MIB

CerOfdmModBitsType
OfdmProfileId

From CADANT-CMTS-LAYER2CMTS-MIB

cadIfMacDomainIfIndexOBJECT-TYPE
cadMacChlChannelIfIndexOBJECT-TYPE

From CADANT-PRODUCTS-MIB

cadLayer2OBJECT-IDENTITY

From CADANT-TC

CadCpeDeviceTypes
InetAddressIPv4or6
OUIAddress

From DOCS-IF-MIB

DocsisQosVersion
DocsisUpstreamType
DocsisVersion
TenthdB
TenthdBmV

From DOCS-IF3-MIB

ChSetId
IfDirection
RcpId

From DOCS-QOS3-MIB

BitRate
docsQosServiceClassEntryOBJECT-TYPE
docsQosServiceFlowIdOBJECT-TYPE
docsQosServiceFlowSidClusterIdOBJECT-TYPE

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero
ifIndexOBJECT-TYPE

From INET-ADDRESS-MIB

InetAddressIPv4
InetAddressIPv6
InetAddressType

From IP-MIB

ipNetToMediaEntryOBJECT-TYPE

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-SMI

Counter32
Counter64
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DateAndTime
DisplayString
MacAddress
RowStatus
TEXTUAL-CONVENTION
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using cadIfCmtsCmCountsTimingOffset OID:

Select an ARRIS/Cadant C4/E6000 CMTS 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 cadIfCmtsCmCountsTimingOffset 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 current round-trip timing offset used to synchronize this cable modem's upstream transmissions, in units of 6.25 microseconds/(64*256). 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 offset drifts significantly from its expected baseline, since an unexpected ranging-offset shift often points to plant or cabling issues affecting that modem. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

Cadant vendor-private MIB for managing MAC (Media Access Control) layer functions on Cable Modem Termination System (CMTS) devices.

Start monitoring ARRIS/Cadant C4/E6000 CMTS (cable modem termination system) 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 CADANT-CMTS-MAC-MIB