CISCO-CABLE-DSG-IF-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2004-03-29

Category: DOCSIS and Cable

Description: Manages DOCSIS Set-top Gateway (DSG) interface configuration on Cisco CMTS platforms.

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What Is CISCO-CABLE-DSG-IF-MIB?

CISCO-CABLE-DSG-IF-MIB is a Cisco enterprise MIB for the DOCSIS Set-top Gateway (DSG) feature on Cisco Cable Modem Termination System (CMTS) platforms, part of Cisco's cable broadband product line. It exposes configuration and status tables describing Conditional Access (CA) vendor definitions, DSG tunnels (the multicast IP streams carrying out-of-band messages to set-top boxes), and their association with downstream channels. Monitoring focus is on verifying tunnel and vendor configuration health and downstream mapping rather than classic hardware sensors, though a missing or misconfigured tunnel entry effectively signals a software/service delivery fault for set-top messaging. It depends on and complements the broader DOCSIS/CMTS MIB set (e.g., interface and downstream channel MIBs) used on the same CMTS chassis. It is deployed in cable operator head-ends running DOCSIS Set-top Gateway services for digital set-top box out-of-band signaling. Engineers can download the CISCO-CABLE-DSG-IF-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-CABLE-DSG-IF-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

Cisco CMTS (Cable Modem Termination System)

Monitoring Examples

An operator would poll ccdsgIfTunnelTable, keyed by ccdsgIfTunnelIndex, to confirm each expected DSG tunnel has a valid ccdsgIfTunnelInIpAddress and ccdsgIfTunnelMacAddress and is mapped to the correct downstream. Checking ccdsgIfCaVendorTable's ccdsgIfCaVendorTunnelCnt against expectations reveals whether a given CA vendor's tunnels are properly provisioned. A tunnel entry with an unexpected or zero address, or a vendor with fewer tunnels than expected, indicates a set-top messaging delivery problem.

What Can Be Monitored

DSG tunnel configuration
tunnel IP and MAC addressing
CA vendor tunnel counts
tunnel-to-downstream channel mapping
row status of vendor/tunnel entries

Imported Objects

From CISCO-SMI

ciscoExperiment

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

MacAddress
RowStatus

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoCableDsgIfMIB	1.3.6.1.4.1.9.10.999			This is the MIB Module for the DOCSIS Set-top Gateway (DSG). The DSG provides a one-way IP datagram transport for Out-Of-Band (OOB) messaging to cable set-top terminals. The one-way IP datagram transport is called a DSG Tunnel. A DSG Tunnel is a multicast IP datagram stream originating at the DOCSIS Set-top Gateway and carrying Out-Of-Band messages intended for set-top terminals. It is carried over one or more downstream DOCSIS channels and is identified by a well know Ethernet unicast MAC address. The well-known Ethernet unicast MAC address is reserved and published by the Conditional Access/Point Of Deployment (CA/POD) provider. A CA/POD provider is limited to eight DSG Tunnels to transport their OOB Messaging. Multiple DSG Tunnels may exist on a single downstream DOCSIS channel. This MIB is implemented as 3 groups, the CA Vendor Table, the DSG Tunnel Table and the Downstream Table. 1) The DSG CA Vendor Table associates a CA Vendor Name with a CA Vendor Index and the current count of tunnels carrying this CA OOB 2) The DSG Tunnel Table associates an input IP Address and an output MAC Address with a CA Vendor Index. 3) The DSG Downstream Table associates a tunnel Index with a DOCSIS downstream channel interface index (ifIndex). These tables are all dynamic in nature. Individual rows can be created or deleted as necessary. In general, the DSG is configured once per CA system.
ccdsgIfCaVendor	1.3.6.1.4.1.9.10.999.1
ccdsgIfCaVendorTable	1.3.6.1.4.1.9.10.999.1.1		not-accessible	The DSG CA Vendor Table associates a CA Vendor Index with the CA Vendor Name and the number of tunnels that carry the CA Vendor's OOB Messaging.
ccdsgIfCaVendorEntry	1.3.6.1.4.1.9.10.999.1.1.1		not-accessible	An entry in the CA Vendor Table. Rows are created by an SNMP SET request setting the value of ccdsgifCaVendorRowStatus to 'createAndGo' or 'createAndWait'. Rows are deleted by an SNMP SET request setting the value of ccdsgifCaVendorRowStatus to 'destroy'. Active CA (that are associated to the tunnel) cannot be detroyed till association is removed.
U32 ccdsgIfCaVendorIndex	1.3.6.1.4.1.9.10.999.1.1.1.1	Unsigned32	not-accessible	The row index into the CA Vendor Table
STR ccdsgIfCaVendorName	1.3.6.1.4.1.9.10.999.1.1.1.2	SnmpAdminString	read-create	The name of the CA Vendor.
I32 ccdsgIfCaVendorTunnelCnt	1.3.6.1.4.1.9.10.999.1.1.1.3	Integer32	read-only	The total count of Tunnel(s) configured for the CA vendor. The value 0 implies that no tunnel is currently configured for this CA vendor.
ROW ccdsgIfCaVendorRowStatus	1.3.6.1.4.1.9.10.999.1.1.1.4	RowStatus	read-create	The status of the row. A value of active(1) indicates that DSG forwards OOB messages onto the DSG Tunnel.
ccdsgIfTunnel	1.3.6.1.4.1.9.10.999.2
ccdsgIfTunnelTable	1.3.6.1.4.1.9.10.999.2.1		not-accessible	The DSG Tunnel Table associates an input IP Address and an output MAC Address with a CA Vendor Index.
ccdsgIfTunnelEntry	1.3.6.1.4.1.9.10.999.2.1.1		not-accessible	An entry in the DSG Tunnel Table. Rows are created by an SNMP SET request setting the value of ccdsgIfTunnelRowStatus to 'createAndGo' or 'createAndWait'. Rows are deleted by an SNMP SET request setting the value of ccdsgIfTunnelRowStatus to 'destroy'.
U32 ccdsgIfTunnelIndex	1.3.6.1.4.1.9.10.999.2.1.1.1	Unsigned32	not-accessible	The row index into the DSG Tunnel table.
IPt ccdsgIfTunnelInAddressType	1.3.6.1.4.1.9.10.999.2.1.1.2	InetAddressType	read-create	The type of internet address of ccdsgIfTunnelInIpAddress. Cannot be changed if the value of ccdsgIfTunnelRowStatus is active.
IP ccdsgIfTunnelInIpAddress	1.3.6.1.4.1.9.10.999.2.1.1.3	InetAddress	read-create	The DSG Tunnel Input IP address. Cannot be changed if the value of ccdsgIfTunnelRowStatus is active.
MAC ccdsgIfTunnelMacAddress	1.3.6.1.4.1.9.10.999.2.1.1.4	MacAddress	read-create	The the DSG Tunnel Output MAC address. Cannot be changed if the value of ccdsgTunnelRowStatus is active.
U32 ccdsgIfTunnelCaVendorIndex	1.3.6.1.4.1.9.10.999.2.1.1.5	Unsigned32	read-create	The index in ccdsgIfCaVendorTable describing the vendor information associated with this particular tunnel. If no associated entry in ccdsgIfCaVendorTable exists, this object should be zero.
ROW ccdsgIfTunnelRowStatus	1.3.6.1.4.1.9.10.999.2.1.1.6	RowStatus	read-create	The status of the row.
ccdsgIfDownstream	1.3.6.1.4.1.9.10.999.3
ccdsgIfDownstreamTable	1.3.6.1.4.1.9.10.999.3.1		not-accessible	The DSG Downstream Table associates a Tunnel Index with a DOCSIS downstream channel interface index (ifIndex). It could have a same tunnel associated to multiple downstream channel and vise versa.
ccdsgIfDownstreamEntry	1.3.6.1.4.1.9.10.999.3.1.1		not-accessible	An entry in the DSG Downstream Table. Rows are created by an SNMP SET request setting the value of ccdsgIfDownRowStatus to 'createAndGo' or 'createAndWait'. Rows are deleted by an SNMP SET request setting the value of ccdsgIfDownRowStatus to 'destroy'.
U32 ccdsgIfDownDsgIndex	1.3.6.1.4.1.9.10.999.3.1.1.1	Unsigned32	not-accessible	The row index into the the downstream DSG table.
U32 ccdsgIfDownTunnelIndex	1.3.6.1.4.1.9.10.999.3.1.1.2	Unsigned32	read-create	The index in ccdsgIfTunnelTable (ccdsgIfTunnelIndex) describing the Tunnel information associated with particular downstream(s).
NUM ccdsgIfDownIfIndex	1.3.6.1.4.1.9.10.999.3.1.1.3	InterfaceIndex	read-create	The interface index (ifIndex) of this downstream.
ROW ccdsgIfDownRowStatus	1.3.6.1.4.1.9.10.999.3.1.1.4	RowStatus	read-create	The status of the row.
ciscoCableDsgIfConformance	1.3.6.1.4.1.9.10.999.4
ciscoCableDsgIfCompliances	1.3.6.1.4.1.9.10.999.4.1
ccdsgIfBasicCompliance	1.3.6.1.4.1.9.10.999.4.1.1			The compliance statement for DOCSIS Set-top Gateway systems.
ciscoCableDsgIfGroups	1.3.6.1.4.1.9.10.999.4.2
ccdsgIfCaVendorGroup	1.3.6.1.4.1.9.10.999.4.2.1			A collection of objects providing CA Vendor configuration.
ccdsgIfTunnelGroup	1.3.6.1.4.1.9.10.999.4.2.2			A collection of objects providing DSG Tunnel configuration.
ccdsgIfDownstreamGroup	1.3.6.1.4.1.9.10.999.4.2.3			A collection of objects providing DSG Downstream configuration.

RFC description

Manages DOCSIS Set-top Gateway (DSG) tunnels for out-of-band messaging to cable set-top terminals.

Start monitoring Cisco CMTS (Cable Modem Termination System) platforms 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 CISCO-CABLE-DSG-IF-MIB

What Is CISCO-CABLE-DSG-IF-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description