CADANT-CMTS-TOPO-MIB

All MIBs › CADANT-CMTS-TOPO-MIB

Organization: Arris International, Inc.

Last Updated: 2014-02-24

Category: DOCSIS and Cable, Vendor: ARRIS

Description: Manages network topology discovery and cable plant topology information on ARRIS/Cadant CMTS platforms.

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What Is CADANT-CMTS-TOPO-MIB?

CADANT-CMTS-TOPO-MIB is a vendor-specific MIB from ARRIS/Cadant for the C4 CMTS platform, covering cable plant topology discovery, specifically fiber node status in a DOCSIS HFC (hybrid fiber-coax) network. It exposes operational status and modem-state-transition counters per fiber node, tracking how many cable modems in that node are in various registration/provisioning phases. Its monitoring value is centered on hardware/network topology health: cadFiberNodeOperStatus reports the operational state of a fiber node, while counters like cadFiberNodeNumInitRanging, cadFiberNodeNumRangingComplete, cadFiberNodeNumStartDhcpv4, and cadFiberNodeNumDhcpv4Complete reveal whether cable modems attached to that node are successfully progressing through ranging and DHCP provisioning or getting stuck. It is proprietary to Cadant's CMTS topology model but conceptually aligned with DOCSIS cable modem registration state machines. It is deployed by cable operators to pinpoint plant-level (fiber node) provisioning problems affecting groups of subscriber modems. Engineers can download the CADANT-CMTS-TOPO-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CADANT-CMTS-TOPO-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 C4 CMTS

Monitoring Examples

An operator would poll cadFiberNodeStatusTable/cadFiberNodeStatusEntry to check cadFiberNodeOperStatus for each fiber node, and if it shows degraded, compare cadFiberNodeNumInitRanging against cadFiberNodeNumRangingComplete to see whether cable modems on that node are stalling during initial ranging (indicating an RF/plant issue). A sudden gap between cadFiberNodeNumStartDhcpv4 and cadFiberNodeNumDhcpv4Complete would reveal DHCPv4 provisioning failures isolated to modems on a specific fiber node, helping narrow a plant outage to a physical segment rather than a CMTS-wide problem.

What Can Be Monitored

fiber node operational status
cable modems in initial ranging
cable modems with ranging complete
modems starting DHCPv4/DHCPv6
modems completing DHCPv4/DHCPv6 provisioning

Imported Objects

From CADANT-CMTS-LAYER2CMTS-MIB

cadIfMacDomainIfIndex

OBJECT-TYPE

From CADANT-PRODUCTS-MIB

cadTopology

OBJECT-IDENTITY

From CADANT-TC

PrimaryState

From CLAB-TOPO-MIB

clabTopoFiberNodeCfgEntry	OBJECT-TYPE
clabTopoFiberNodeCfgNodeName	OBJECT-TYPE

From DOCS-IF3-MIB

ChSetId
IfDirection
docsIf3DsChSetEntry	OBJECT-TYPE
docsIf3MdNodeStatusEntry	OBJECT-TYPE
docsIf3UsChSetEntry	OBJECT-TYPE

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TEXTUAL-CONVENTION
TimeInterval
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
cadTopologyMib	1.3.6.1.4.1.4998.1.1.105.1			This MIB module contains Cadant proprietary topology MIB information.
cadTopologyMibObjects	1.3.6.1.4.1.4998.1.1.105.1.1
cadFiberNodeStatusTable	1.3.6.1.4.1.4998.1.1.105.1.1.1		not-accessible	A Table containing information about the Cadant Fiber Node status.
cadFiberNodeStatusEntry	1.3.6.1.4.1.4998.1.1.105.1.1.1.1		not-accessible	A conceptual row containing information about the Cadant FiberNode status.
PRI cadFiberNodeOperStatus	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.1	PrimaryState	read-only	Cadant Fiber Node operation status.
I32 cadFiberNodeNumOther	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.11	Integer32	read-only	The number of modems on this fiber-node in state other(1)
I32 cadFiberNodeNumInitRanging	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.12	Integer32	read-only	The number of modems on this fiber-node in state initialRanging(2)
I32 cadFiberNodeNumRangingComplete	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.13	Integer32	read-only	The number of modems on this fiber-node in state rangingAutoAdjComplete(4)
I32 cadFiberNodeNumStartEae	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.14	Integer32	read-only	The number of modems on this fiber-node in state startEae(10)
I32 cadFiberNodeNumStartDhcpv4	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.15	Integer32	read-only	The number of modems on this fiber-node in state startDhcpv4(11)
I32 cadFiberNodeNumStartDhcpv6	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.16	Integer32	read-only	The number of modems on this fiber-node in state startDhcpv6(12)
I32 cadFiberNodeNumDhcpv4Complete	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.17	Integer32	read-only	The number of modems on this fiber-node in state dhcpv4Complete(5)
I32 cadFiberNodeNumDhcpv6Complete	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.18	Integer32	read-only	The number of modems on this fiber-node in state dhcpv6Complete(13)
I32 cadFiberNodeNumStartCfgFileDownload	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.19	Integer32	read-only	The number of modems on this fiber-node in state startConfigFileDownload(14)
I32 cadFiberNodeNumCfgFileDownloadComplete	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.20	Integer32	read-only	The number of modems on this fiber-node in state configFileDownloadComplete(15)
I32 cadFiberNodeNumStartRegistration	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.21	Integer32	read-only	The number of modems on this fiber-node in state startRegistration(16)
I32 cadFiberNodeNumRegistrationComplete	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.22	Integer32	read-only	The number of modems on this fiber-node in state registrationComplete(6)
I32 cadFiberNodeNumOperational	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.23	Integer32	read-only	The number of modems on this fiber-node in state operational(8)
I32 cadFiberNodeNumBpiInit	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.24	Integer32	read-only	The number of modems on this fiber-node in state bpiInit(9)
I32 cadFiberNodeNumForwardingDisabled	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.25	Integer32	read-only	The number of modems on this fiber-node in state forwardingDisabled(17)
I32 cadFiberNodeNumRfMuteAll	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.26	Integer32	read-only	The number of modems on this fiber-node in state rfMuteAll(18)
I32 cadFiberNodeNumTotal	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.27	Integer32	read-only	The total count of cable modems on this fiber-node
I32 cadFiberNodeNumRangingAborted	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.28	Integer32	read-only	The number of modems on this fiber-node in state rangingAborted(3)
I32 cadFiberNodeNumRangFlaps	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.29	Integer32	read-only	The number of times a CM on this fiber-node fiber-node has reset in Ranging states.
I32 cadFiberNodeNumProvFlaps	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.30	Integer32	read-only	The number of times a CM on this fiber-node has reset in Provisioning states.
I32 cadFiberNodeNumRegFlaps	1.3.6.1.4.1.4998.1.1.105.1.1.1.1.31	Integer32	read-only	The number of times a CM on this fiber-node has reset in Registered state.
cadChlFnTable	1.3.6.1.4.1.4998.1.1.105.1.1.2		not-accessible	A Table containing information about the Cadant Topology fiber node channel.
cadChlFnEntry	1.3.6.1.4.1.4998.1.1.105.1.1.2.1		not-accessible	A conceptual row containing information about the Cadant fiber node channel.
NUM cadChlIfIndex	1.3.6.1.4.1.4998.1.1.105.1.1.2.1.1	InterfaceIndex	not-accessible	Fiber node channel interface index.
IFD cadChlFnIfDirection	1.3.6.1.4.1.4998.1.1.105.1.1.2.1.2	IfDirection	read-only	Fiber node channel direction.
U32 cadChlFnMdUsOrDsSgId	1.3.6.1.4.1.4998.1.1.105.1.1.2.1.3	Unsigned32	read-only	MD-US-SG ID or MD-DS-SG ID in this fiber node.
NUM cadChlFnUsOrDsPhysChlIfIndex	1.3.6.1.4.1.4998.1.1.105.1.1.2.1.4	InterfaceIndexOrZero	read-only	Interface index of an physical upstream or downstream channel.
U32 cadChlFnChlId	1.3.6.1.4.1.4998.1.1.105.1.1.2.1.5	Unsigned32	read-only	Fiber node channel id. This value comes from cadMacChlChannelId of cadMacChlTable.

RFC description

Manages Cadant CMTS topology information including fiber node status and channel set relationships.

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-TOPO-MIB

What Is CADANT-CMTS-TOPO-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description