CADANT-CMTS-MULTICAST-MIB

All MIBs › CADANT-CMTS-MULTICAST-MIB

Organization: Arris Inc

Last Updated: 2015-01-28

Category: DOCSIS and Cable, Vendor: ARRIS

Description: Manages IP multicast group membership and traffic forwarding configuration on ARRIS/Cadant CMTS for cable TV and IPTV delivery.

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What Is CADANT-CMTS-MULTICAST-MIB?

CADANT-CMTS-MULTICAST-MIB is a vendor-specific MIB from Cadant (now part of ARRIS/CommScope) for its Cable Modem Termination System (CMTS), covering IP multicast group membership, static MAC/IP bindings, and multicast routing (mroute) table configuration used to deliver multicast traffic, such as IPTV, over the cable network. It exposes tables for static multicast MAC-to-IP bindings and for multicast routes (including route type, source address/prefix, and RPF address), along with global multicast configuration and FQDN configuration objects. For monitoring purposes this MIB is centered on multicast forwarding-plane configuration and state rather than chassis-level hardware - an operator would use it to verify multicast group memberships and mroute entries are correctly established and that reverse-path-forwarding is pointed at the expected source, which affects whether IPTV/multicast content is correctly delivered downstream. It operates within the broader DOCSIS/CMTS MIB ecosystem and likely depends on standard IP multicast (PIM/IGMP) MIB concepts for its route modeling. It is deployed on ARRIS/Cadant CMTS platforms at cable headends/hub sites for delivering IP multicast/IPTV services to cable subscribers. Engineers can download the CADANT-CMTS-MULTICAST-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CADANT-CMTS-MULTICAST-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 CMTS (Cable Modem Termination System)

Monitoring Examples

An operator would poll cadMcastMrouteTable/cadMcastMrouteEntry to check cadMcastMrouteSourceAddress, cadMcastMrouteSourcePrefix, and cadMcastMrouteRpfAddress for a given multicast route, confirming the RPF address matches the expected upstream source path. The cadMcastStaticMacIpBindingTable would be checked (via cadMcastStaticMacIpBindingAddress and cadMcastStaticMacIpBindingMacAddress) to confirm static bindings are correctly provisioned and their cadMcastStaticMacIpBindingStatus is active. A mismatched or missing RPF address on an mroute entry would indicate multicast traffic for that group is being dropped due to an RPF failure, explaining a subscriber-facing IPTV outage.

What Can Be Monitored

multicast route table entries
multicast RPF source address
static MAC/IP multicast bindings
binding status (active/inactive)
multicast group membership

Imported Objects

From CADANT-CMTS-LAYER2CMTS-MIB

cadIfMacDomainIfIndex

OBJECT-TYPE

From CADANT-PRODUCTS-MIB

cadLayer3

OBJECT-IDENTITY

From DC-MGMD-MIB

mgmdPmStaticGroupAddressType	OBJECT-TYPE
mgmdPmStaticGroupEntityType	OBJECT-TYPE
mgmdPmStaticGroupIfIndex	OBJECT-TYPE

From DOCS-IF3-MIB

ChSetId

From DSG-IF-MIB

Dsid
dsgIfClassId	OBJECT-TYPE
dsgIfTunnelGrpIndex	OBJECT-TYPE
dsgIfTunnelIndex	OBJECT-TYPE

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero
ifIndex	OBJECT-TYPE

From INET-ADDRESS-MIB

InetAddress
InetAddressPrefixLength
InetAddressType

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-SMI

Counter64
Integer32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

MacAddress
RowStatus
TruthValue

How to Use in IPNetwork Monitor

Example using cadMcastForwardCount OID:

Select an ARRIS/Cadant C4/E6000 CMT (cable modem termination system) 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 cadMcastForwardCount 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. The number of multicast packets forwarded for this 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 a Counter64-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
cadMcastStdMib	1.3.6.1.4.1.4998.1.1.25.10			Cadant Multicast MIB tables
cadMcastStaticMacIpBindingTable	1.3.6.1.4.1.4998.1.1.25.10.1		not-accessible	The list of static multicast MAC/IP bindings. Bindings in this table are used to override the standard RFC bindings.
cadMcastStaticMacIpBindingEntry	1.3.6.1.4.1.4998.1.1.25.10.1.1		not-accessible	An entry (conceptual row) in the cadMcastStaticMacIpBindingTable.
IPt cadMcastStaticMacIpBindingAddressType	1.3.6.1.4.1.4998.1.1.25.10.1.1.1	InetAddressType	not-accessible	The address type of the InetAddress variables in this table.
IP cadMcastStaticMacIpBindingAddress	1.3.6.1.4.1.4998.1.1.25.10.1.1.2	InetAddress	not-accessible	The multicast group address.
MAC cadMcastStaticMacIpBindingMacAddress	1.3.6.1.4.1.4998.1.1.25.10.1.1.3	MacAddress	read-create	The MAC address to bind to the multicast group address in the ARP table.
ROW cadMcastStaticMacIpBindingStatus	1.3.6.1.4.1.4998.1.1.25.10.1.1.4	RowStatus	read-create	The status of this row.
cadMcastMrouteTable	1.3.6.1.4.1.4998.1.1.25.10.2		not-accessible	The list of static mroutes. Routes in this table are used to override unicast routes.
cadMcastMrouteEntry	1.3.6.1.4.1.4998.1.1.25.10.2.1		not-accessible	An entry (conceptual row) in the cadMcastMrouteTable.
IPt cadMcastMrouteType	1.3.6.1.4.1.4998.1.1.25.10.2.1.1	InetAddressType	not-accessible	The address type of the InetAddress variables in this table.
IP cadMcastMrouteSourceAddress	1.3.6.1.4.1.4998.1.1.25.10.2.1.2	InetAddress	not-accessible	The multicast route source address.
ADR cadMcastMrouteSourcePrefix	1.3.6.1.4.1.4998.1.1.25.10.2.1.3	InetAddressPrefixLength	not-accessible	The multicast route source network prefix.
IP cadMcastMrouteRpfAddress	1.3.6.1.4.1.4998.1.1.25.10.2.1.4	InetAddress	read-create	The multicast route RPF neighbor address.
I32 cadMcastMrouteDistance	1.3.6.1.4.1.4998.1.1.25.10.2.1.5	Integer32	read-create	The multicast route admin distance.
ROW cadMcastMrouteStatus	1.3.6.1.4.1.4998.1.1.25.10.2.1.6	RowStatus	read-create	The status of this row.
cadMcastForwardTable	1.3.6.1.4.1.4998.1.1.25.10.3		not-accessible	The list of multicast forwardings.
cadMcastForwardEntry	1.3.6.1.4.1.4998.1.1.25.10.3.1		not-accessible	An entry (conceptual row) in the cadMcastForwardTable.
IPt cadMcastForwardAddressType	1.3.6.1.4.1.4998.1.1.25.10.3.1.1	InetAddressType	not-accessible	The address type of the InetAddress variables in this table.
IP cadMcastForwardGroupAddress	1.3.6.1.4.1.4998.1.1.25.10.3.1.2	InetAddress	not-accessible	The multicast group address.
IP cadMcastForwardSourceAddress	1.3.6.1.4.1.4998.1.1.25.10.3.1.3	InetAddress	not-accessible	The multicast source address or 0 for all sources.
NUM cadMcastForwardSourceIf	1.3.6.1.4.1.4998.1.1.25.10.3.1.4	InterfaceIndexOrZero	not-accessible	The multicast source interface or 0 for all interface.
U32 cadMcastForwardDestIfList	1.3.6.1.4.1.4998.1.1.25.10.3.1.5	Unsigned32	read-only	The index id of the list of destination interfaces.
C64 cadMcastForwardCountEx	1.3.6.1.4.1.4998.1.1.25.10.3.1.6	Counter64	read-only	The number of multicast packets forwarded for this group.
cadMcastForwardDestTable	1.3.6.1.4.1.4998.1.1.25.10.4		not-accessible	The list of multicast forwarding destination interfaces.
cadMcastForwardDestEntry	1.3.6.1.4.1.4998.1.1.25.10.4.1		not-accessible	An entry (conceptual row) in the cadMcastForwardDestTable.
U32 cadMcastForwardDestIfListId	1.3.6.1.4.1.4998.1.1.25.10.4.1.1	Unsigned32	not-accessible	The index id of the list of destination interfaces.
U32 cadMcastForwardDestIf	1.3.6.1.4.1.4998.1.1.25.10.4.1.2	Unsigned32	read-only	The multicast dest interface.For the case of cadMcastForwardDestIfType being set to sdv(2), the destination interface will be a DCAM slot number. For all other settings of cadMcastForwardDestIfType, the destination interface will be an ifIndex.
INT cadMcastForwardDestIfType	1.3.6.1.4.1.4998.1.1.25.10.4.1.3	INTEGER	read-only	The type of multicast destination interface.
cadMcastGlobals	1.3.6.1.4.1.4998.1.1.25.10.5
T/F cadMcastClearForwardCounts	1.3.6.1.4.1.4998.1.1.25.10.5.1	TruthValue	read-write	This variable always returns false upon reading. When set to true, the multicast forward counts are cleared.
T/F cadMcastForwardUseDefaultFlow	1.3.6.1.4.1.4998.1.1.25.10.5.2	TruthValue	read-write	When set to true, the forwarding of multicast data packets uses the default flow
T/F cadMcastDeleteDsg	1.3.6.1.4.1.4998.1.1.25.10.5.3	TruthValue	read-write	This variable always returns false(2) upon reading. When set to true(1), all rows in every DSG MIB table are deleted. except dsgIfDownstreamEntry(s) are reset to default values.
T/F cadMcastIgmpThrottleEnable	1.3.6.1.4.1.4998.1.1.25.10.5.4	TruthValue	read-write	Globally enable/disable IGMP throttle feature.
U32 cadMcastIgmpThrottleBurstSize	1.3.6.1.4.1.4998.1.1.25.10.5.5	Unsigned32	read-write	Maximum size of IGMP throttle bucket per MAC address.
U32 cadMcastIgmpThrottleInterval	1.3.6.1.4.1.4998.1.1.25.10.5.6	Unsigned32	read-write	Interval in seconds between replenishing an IGMP throttle bucket.
U32 cadMcastIgmpThrottleIncrement	1.3.6.1.4.1.4998.1.1.25.10.5.7	Unsigned32	read-write	Number of tokens added to a throttle bucket every cadMcastIgmpThrottleInterval seconds.
T/F cadMcastClearVideoForwardCounts	1.3.6.1.4.1.4998.1.1.25.10.5.8	TruthValue	read-write	This variable always returns false upon reading. When set to true, the SDV multicast forward counts (i.e. cadMcastForwardCount attribute of the rows of cadMcastForwardEntry for IEQ video) are cleared.
cadFqdnCfgGroup	1.3.6.1.4.1.4998.1.1.25.10.6
T/F cadFqdnCacheEnable	1.3.6.1.4.1.4998.1.1.25.10.6.1	TruthValue	read-write	If set to true(1), polling for the C4 applications' FQDN / IP cache binding updates will be enabled. If set to false(2), no polling will be performed.
U32 cadFqdnCachePollInterval	1.3.6.1.4.1.4998.1.1.25.10.6.2	Unsigned32	read-write	Poll interval in seconds for checking for updates to the C4 application's FQDN/IP cache binding.
T/F cadFqdnCacheRefresh	1.3.6.1.4.1.4998.1.1.25.10.6.3	TruthValue	read-write	This variable always returns false(2) upon reading. When set to true(1), the C4 application will immediatelly poll the DNS resovler for an update of each of the FQDN IP bindings contained in the cadStaticFqdnCacheTable.
cadFqdnCacheTable	1.3.6.1.4.1.4998.1.1.25.10.7		not-accessible	The list of the FQDN IP bindings from DNS resolver.
cadFqdnCacheEntry	1.3.6.1.4.1.4998.1.1.25.10.7.1		not-accessible	An entry (conceptual row) in the cadFqdnCacheTable.
STR cadFqdnCacheName	1.3.6.1.4.1.4998.1.1.25.10.7.1.1	SnmpAdminString	not-accessible	The name can be a host name or fully/partially qualified domain name.
STR cadFqdnCacheFqdn	1.3.6.1.4.1.4998.1.1.25.10.7.1.2	SnmpAdminString	read-only	the fully qualified domain name returned from DNS resolver.
IPt cadFqdnCacheIpAddrType	1.3.6.1.4.1.4998.1.1.25.10.7.1.3	InetAddressType	read-only	The IP address type associated with the IP address. If the IP address is zero length, this object will be set to unknown(0).
IP cadFqdnCacheIpAddress	1.3.6.1.4.1.4998.1.1.25.10.7.1.4	InetAddress	read-only	The IP address type associated with the resolved IP address. This object is set to zero length, if the resolved IP address is not found.
TIK cadFqdnCacheLastUpdateTime	1.3.6.1.4.1.4998.1.1.25.10.7.1.5	TimeTicks	read-only	The sysUpTime when a cadStaticFqdnCacheEntry is updated.
INT cadFqdnCacheStatus	1.3.6.1.4.1.4998.1.1.25.10.7.1.6	INTEGER	read-only	validIp(1) - found a valid IP address associated with cadStaticFqdnCacheName. unknownIp(2) - DNS server does not have the IP address. invalidIp(3) - IP address returned by the service is not a vlid unicast IP address. timeout(4) - DNS resolver send request but get timeout. genError(5) - general error.
cadDsgIfClassifierCfgTable	1.3.6.1.4.1.4998.1.1.25.10.8		not-accessible	The list of the FQDN IP bindings from DNS resolver.
cadDsgIfClassifierCfgEntry	1.3.6.1.4.1.4998.1.1.25.10.8.1		not-accessible	An entry (conceptual row) in the cadDsgIfClassifierCfgTable.
STR cadDsgIfSrcName	1.3.6.1.4.1.4998.1.1.25.10.8.1.1	SnmpAdminString	read-create	The source name where a source name can be a host name, partially, or fully qualified domain name.
ROW cadDsgIfClassifierCfgRowStatus	1.3.6.1.4.1.4998.1.1.25.10.8.1.2	RowStatus	read-create	The status of this row.
cadMgmdPmStaticGroupCfgTable	1.3.6.1.4.1.4998.1.1.25.10.9		not-accessible	The list of the FQDN IP bindings from DNS resolver.
cadMgmdPmStaticGroupCfgEntry	1.3.6.1.4.1.4998.1.1.25.10.9.1		not-accessible	An entry (conceptual row) in the cadMgmdPmStaticGroupCfgTable.
IP cadMgmdPmStaticGroupAddress	1.3.6.1.4.1.4998.1.1.25.10.9.1.1	InetAddress	not-accessible	the static IP address of the group.
STR cadMgmdPmStaticGroupSourceName	1.3.6.1.4.1.4998.1.1.25.10.9.1.2	SnmpAdminString	read-only	Group source name can be a host name or fully/partially qualified domain name.
ROW cadMgmdPmStaticGroupCfgRowStatus	1.3.6.1.4.1.4998.1.1.25.10.9.1.3	RowStatus	read-only	The status of this row.
cadMcastStatsTable	1.3.6.1.4.1.4998.1.1.25.10.10		not-accessible	The Cadent Multicast Stats Table contains the packet and byte counters for an instance of a multicast stream. If the multicast stream is for a DSG tunnel, it also contains the ifIndex of the channel carrying the tunnel and the tunnel number.
cadMcastStatsEntry	1.3.6.1.4.1.4998.1.1.25.10.10.1		not-accessible	An entry in the Cadent Multicast Stats Table. An entry in this table exists for each active multicast service flow when MDF is enabled on the cable-mac.
DSI cadMcastStatsDsid	1.3.6.1.4.1.4998.1.1.25.10.10.1.1	Dsid	not-accessible	This object contains the DSID value with which the CMTS labels the DSG Tunnel traffic.
C64 cadMcastStatsSentPkts	1.3.6.1.4.1.4998.1.1.25.10.10.1.2	Counter64	read-only	This attribute indicates the count of the number of packets transmitted for this outgoing multicast stream.
C64 cadMcastStatsSentOctets	1.3.6.1.4.1.4998.1.1.25.10.10.1.3	Counter64	read-only	This attribute indicates the count of the number of octets transmitted for this outgoing multicast stream.
C64 cadMcastStatsDroppedPkts	1.3.6.1.4.1.4998.1.1.25.10.10.1.4	Counter64	read-only	This attribute indicates the count of the number of packets dropped for this outgoing multicast stream.
C64 cadMcastStatsDroppedOctets	1.3.6.1.4.1.4998.1.1.25.10.10.1.5	Counter64	read-only	This attribute indicates the count of the number of octets dropped for this outgoing multicast stream.
NUM cadMcastStatsDsIfIndex	1.3.6.1.4.1.4998.1.1.25.10.10.1.6	InterfaceIndexOrZero	read-only	The ifIndex of the downstream channel carrying this stream. Zero if stream is not for DSG.
U32 cadMcastStatsTunnelIndex	1.3.6.1.4.1.4998.1.1.25.10.10.1.7	Unsigned32	read-only	The index into the DSG Tunnel table that represent a tunnel. Zero if stream is not for DSG.
CHS cadMcastStatsDsChSetId	1.3.6.1.4.1.4998.1.1.25.10.10.1.8	ChSetId	read-only	This attribute provides the reference for the Downstream Channel Set within a MAC Domain that the multicast Servide flow is replicated to.
U32 cadMcastStatsGSFID	1.3.6.1.4.1.4998.1.1.25.10.10.1.9	Unsigned32	read-only	This attribute indicates the identifier assigned to the multicast group service flow.
cadDsgIfTunnelChToGroupTable	1.3.6.1.4.1.4998.1.1.25.10.11		not-accessible	The list of entries of DSG tunnel channel to group.
cadDsgIfTunnelChToGroupEntry	1.3.6.1.4.1.4998.1.1.25.10.11.1		not-accessible	An entry (conceptual row) in the cadDsgIfTunnelChToGroupTable.
U32 cadDsgIfTunnelGrpIndex	1.3.6.1.4.1.4998.1.1.25.10.11.1.1	Unsigned32	read-only	This attribute indicates DSG tunnel group index.

RFC description

Cadant Inc. MIB for managing multicast configuration and monitoring on Cadant CMTS (Cable Modem Termination System) equipment.

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Download CADANT-CMTS-MULTICAST-MIB