RDN-CHANNEL-BONDING-MIB

All MIBs › RDN-CHANNEL-BONDING-MIB

Organization: Motorola

Last Updated: 2011-07-20

Category: DOCSIS and Cable

Description: Manages DOCSIS 3.0 channel bonding group configuration and downstream/upstream bonded channel status on Motorola BSR CMTS.

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What Is RDN-CHANNEL-BONDING-MIB?

RDN-CHANNEL-BONDING-MIB is a Motorola (BSR CMTS) enterprise MIB implementing DOCSIS 3.0 channel bonding management for cable broadband access, covering both downstream and upstream bonded channel groups. It exposes a bonding-group table describing which downstream/upstream RF channels are combined into a bonding group per MAC domain, and a corresponding statistics table tracking per-channel octet and packet counts within each group. Its monitoring value is centered on cable-plant performance: operators track rdnBondingGroupStatsOctetCount/PacketCount per channel to detect an unbalanced or failing RF channel within a bonding group, which would show up as reduced throughput or packet loss for subscribers on that group. It is built on and dependent on the DOCSIS 3.0 channel-bonding architecture defined by CableLabs, extending standard DOCS-IF3-MIB-style concepts with Motorola-specific objects. It is deployed on Motorola BSR CMTS headend equipment in cable operator networks delivering bonded DOCSIS 3.0 broadband service. Engineers can download the RDN-CHANNEL-BONDING-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RDN-CHANNEL-BONDING-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 BSR CMTS (cable modem termination system)

Monitoring Examples

An operator would poll rdnBondingGroupTable (rdnBondingGroupEntry) for rdnBondingGroupChanId entries under a given rdnBondingGroupId/rdnBondingGroupMacIfIndex to confirm all expected RF channels are part of a downstream or upstream (rdnBondingGroupDir) bonding group. Checking rdnBondingGroupStatsTable (rdnBondingGroupStatsEntry) for rdnBondingGroupStatsOctetCount and rdnBondingGroupStatsPacketCount per rdnBondingGroupStatsChanId would reveal if one channel in the group is carrying disproportionately less traffic, indicating an RF impairment or failed channel that is degrading the bonded group's effective throughput for subscribers.

What Can Be Monitored

downstream/upstream bonding group membership
bonded channel IDs per group
per-channel octet and packet counts
bonding group statistics

Imported Objects

From DOCS-IF-MIB

docsIfCmtsCmStatusIndex

OBJECT-TYPE

From DOCS-IF3-MIB

ChSetId
IfDirection

From IF-MIB

InterfaceIndex
ifIndex	OBJECT-TYPE

From INET-ADDRESS-MIB

InetAddressIPv6

From RDN-MIB

riverdelta

MODULE-IDENTITY

From SNMPv2-SMI

Counter32
Counter64
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

MacAddress
TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using rdnBondingGroupStatsOctetCount OID:

Select a Motorola BSR CMT (DOCSIS 3.0 downstream/upstream channel bonding statistics) 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 rdnBondingGroupStatsOctetCount 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. This entry contains the statistical count of the number of octets sent through this downstream or upstream for this bonding 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
rdnChannelBondingMib	1.3.6.1.4.1.4981.9			MIB module for Motorola Downstream/Upstream Channel Bonding. Copyright (C) 2007, 2008 by Motorola, Inc. All rights reserved.
rdnBondingGroupTable	1.3.6.1.4.1.4981.9.5		not-accessible	This table describes downstream and upstream channel bonding groups
rdnBondingGroupEntry	1.3.6.1.4.1.4981.9.5.1		not-accessible	An entry provides a list of attributes for a downstream or upstream channel in each bonding group for each mac domain. An entry in this table exists for each channel in each defined bonding group on each mac domain (ifEntry with ifType of docsCableMaclayer(127))
INT rdnBondingGroupMacIfIndex	1.3.6.1.4.1.4981.9.5.1.1	INTEGER	not-accessible	This references the mac domain to which this bonding group is bound.
IFD rdnBondingGroupDir	1.3.6.1.4.1.4981.9.5.1.2	IfDirection	not-accessible	This attribute defines the direction (downstream or upstream) of the bonding group
INT rdnBondingGroupId	1.3.6.1.4.1.4981.9.5.1.3	INTEGER	not-accessible	The bonding group identifier
INT rdnBondingGroupChanIndex	1.3.6.1.4.1.4981.9.5.1.4	INTEGER	not-accessible	This is the index into a bonding groups channel list (1-8). A downstream bonding group can have up to 8 channels. an upstream bonding group can have up to 4 logical channels.
INT rdnBondingGroupChanId	1.3.6.1.4.1.4981.9.5.1.5	INTEGER	read-only	The downstream or upstream channel identifier. This value is equivalent to docsIfDownChannelId or docsIfUpChannelId
rdnBondingGroupStatsTable	1.3.6.1.4.1.4981.9.6		not-accessible	This table lists statistic counts for each downstream or upstream in each bonding group for each mac domain.
rdnBondingGroupStatsEntry	1.3.6.1.4.1.4981.9.6.1		not-accessible	An entry provides statistic counts for all downstream or upstream channels in a bonding group for each mac domain. An entry in this table exists for each channel in each bonding group on each mac domain (each ifEntry with an ifType of docsCableMaclayer(127)).
INT rdnBondingGroupStatsChanId	1.3.6.1.4.1.4981.9.6.1.1	INTEGER	read-only	The downstream or upstream channel identifier. This value is equivalent to docsIfDownChannelId or docsIfUpChannelId
C64 rdnBondingGroupStatsOctetCountEx	1.3.6.1.4.1.4981.9.6.1.2	Counter64	read-only	This entry contains the statistical count of the number of octets sent through this downstream or upstream for this bonding group.
C64 rdnBondingGroupStatsPacketCount	1.3.6.1.4.1.4981.9.6.1.3	Counter64	read-only	This entry contains the statistical count of the number of packets sent through this downstream or number of segments sent through this upstream for this bonding group.
rdnBondingGroupCmTable	1.3.6.1.4.1.4981.9.7		not-accessible	This table shows the number of modems registered on the downstream or upstream bonding group
rdnBondingGroupCmEntry	1.3.6.1.4.1.4981.9.7.1		not-accessible	An entry provides a list of attributes for a single downstream or upstream bonding group. An entry in this table exists for each defined bonding group.
I32 rdnBondingGroupCmRegisteredModems	1.3.6.1.4.1.4981.9.7.1.1	Integer32	read-only	The number of modems registered under this bonding group
rdnCmtsCmPartialServiceTable	1.3.6.1.4.1.4981.9.8		not-accessible	This table describes Cable Modems operating in partial service mode in either downstream or upstream direction due to deficiencies in available resources to match requested performance.
rdnCmtsCmPartialServiceEntry	1.3.6.1.4.1.4981.9.8.1		not-accessible	An entry provides info on CMs working in partial service mode. Info including the Cable modem Id, MAC domain ifIndex, the CM macAddress, Active and Inactive Channel Set ID. The table is indexed by Cable modem Id and the bonding group direction. The table provides a reference to docsIf3UsChSetEntry/docsIf3DsChSetEntry used in DOCS-IF3-MIB.mibs via MacIfIndex and ChSetId.
IFD rdnCmtsCmPSDir	1.3.6.1.4.1.4981.9.8.1.1	IfDirection	not-accessible	This attribute defines the direction (downstream or upstream) of the bonding group
NUM rdnCmtsCmPSMacDomainIfIndex	1.3.6.1.4.1.4981.9.8.1.2	InterfaceIndex	read-only	The MAC interface index under which this channel's bonding group is configured. This will be an ifType of docsCableMaclayer(127).
MAC rdnCmtsCmPSMacAddress	1.3.6.1.4.1.4981.9.8.1.3	MacAddress	read-only	The MAC address of the Cable Modem in Partial Service.
CHS rdnCmtsCmPSAssignedChSetId	1.3.6.1.4.1.4981.9.8.1.4	ChSetId	read-only	The assigned Channel Set for the current modem .
CHS rdnCmtsCmPSActiveChSetId	1.3.6.1.4.1.4981.9.8.1.5	ChSetId	read-only	The currently active Channel Set for the current modem .
CHS rdnCmtsCmPSAssignedChSetList	1.3.6.1.4.1.4981.9.8.1.6	ChSetListStr	read-only	The currently assigned Channels for the current modem.
CHS rdnCmtsCmPSNonActiveChList	1.3.6.1.4.1.4981.9.8.1.7	ChSetListStr	read-only	The current non-active Channel(s) for the current modem.
IP rdnCmtsCmPSIpv4Addr	1.3.6.1.4.1.4981.9.8.1.8	IpAddress	read-only	The IPv4 assigned to the current modem. If the modem is operating in a IPv6 only provisioning mode this field should return 0.0.0.0.
ADR rdnCmtsCmPSIpv6Addr	1.3.6.1.4.1.4981.9.8.1.9	InetAddressIPv6	read-only	This attribute represents the IPv6 address of the current CM. If the CM has no Internet IPv6 address assigned the value of this attribute is the all zeros address.

RFC description

Downstream/upstream channel bonding for Motorola cable modem termination systems (CMTS).

Start monitoring Motorola BSR CMTS (DOCSIS 3.0 downstream/upstream channel bonding 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 RDN-CHANNEL-BONDING-MIB