BRCM-CABLEDATA-ENGINEERING-MIB

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Organization: Broadcom Corporation

Last Updated: 2006-11-17

Category: Cable/DOCSIS

Description: Provides engineering-level diagnostics and test objects for Broadcom cable data platforms.

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What Is BRCM-CABLEDATA-ENGINEERING-MIB?

BRCM-CABLEDATA-ENGINEERING-MIB is a Broadcom proprietary factory MIB providing low-level engineering and manufacturing-test diagnostics for Broadcom cable data (cable modem/gateway) chipset platforms. Rather than typical operational health data, it exposes direct memory-access primitives and EJTAG embedded hardware debug controls, reading/writing raw memory addresses and configuring instruction breakpoint tables on the chip's debug port. Its relevance to monitoring is narrow and specialized: it supports factory/engineering-level hardware diagnostics rather than routine software status like uptime or CPU load, making it a debug/test tool rather than a production health-monitoring module. It is a standalone Broadcom vendor MIB with no dependency on standard IETF MIBs, since it targets chip-internal debug registers directly. It is used in manufacturing, R&D, and deep field-diagnostic contexts for Broadcom cable modem/gateway silicon, not in routine NOC dashboards. Engineers can download the BRCM-CABLEDATA-ENGINEERING-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in BRCM-CABLEDATA-ENGINEERING-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

Broadcom cable modem/gateway chipset (factory/engineering use)

Monitoring Examples

An engineer would set cdEngrMemAccessAddress and cdEngrMemAccessNumBytes, issue a cdEngrMemAccessCommand, and read back cdEngrMemAccessData to inspect raw chip memory during hardware bring-up or fault triage. The cdEngrEJTAGInstrBrkTable/cdEngrEJTAGInstrBrkEntry rows, indexed by cdEngrEJTAGIBChannel, would be used to set cdEngrEJTAGIBAddress/cdEngrEJTAGIBAddrMask breakpoints and cdEngrEJTAGIBEnabled to trap the CPU at a specific instruction for a firmware crash investigation. This is a debug workflow rather than a continuous monitoring scenario.

What Can Be Monitored

raw memory address read/write access
EJTAG debug breakpoint configuration
JTAG test port select/disable state

Imported Objects

From BRCM-CABLEDATA-PRIVATE-MIB

cableDataPrivateMIBObjects

OBJECT-IDENTITY

From SNMPv2-SMI

Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
cableDataEngineering	1.3.6.1.4.1.4413.50.1.2.1.1.3			Broadcom cabledata factory MIB
cableDataEngineeringBase	1.3.6.1.4.1.4413.50.1.2.1.1.3.1
U32 cdEngrMemAccessAddress	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.1	Unsigned32	read-write	The memory address to access when executing a cdEngrMemAccessCommand operation.
U32 cdEngrMemAccessNumBytes	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.2	Unsigned32	read-write	The number of bytes to read or write when executing a cdEngrMemAccessCommand operation.
U32 cdEngrMemAccessData	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.3	Unsigned32	read-write	The data read from or to be written to the device when executing a cdEngrMemAccessCommand operation.
INT cdEngrMemAccessCommand	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.4	INTEGER	read-write	Setting this value to read(0) will cause the number of bytes specified in cdEngrMemAccessNumBytes to be read from the address specified by cdEngrMemAccessAddress, and the resulting data will be available in cdEngrMemAccessData. Setting this value to write(1) will cause the number of bytes specified in cdEngrMemAccessNumBytes to be written to the memory address specified in cdEngrMemAccessAddress, using the data specified in cdEngrMemAccessData.
cableDataEngineeringEjtag	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20
I32 cdEngrEJTAGTPSelect	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.1	Integer32	read-write	This object sets the TP that the EJTAG DSU (debug support unit) will monitor.
T/F cdEngrEJTAGDisableAll	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.2	TruthValue	read-write	This object disables all active instruction and data breaks. If set to a value of 'true', this object disables all active instruction and data breaks. If set to a value of 'false', this object takes no action. If read this object always returns 'false'.
cdEngrEJTAGInstrBrkTable	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.3		not-accessible	This data table represents EJTAG Instruction Break configuration. It specifies an Instruction Break for the specified channel and address (with optional mask). Hardware may place restrictions on the values (e.g. bit 0 of the address is likely forced to 0, and bit 0 of the mask is forced to 1). The default mask is 0xffffffff (all address bits relevant). Be careful when specifying a mask, since many values (like 0, 1, etc) can cause an immediate break to occur. The instruction break behaves according to this pseudo-code: if ((ProgramCounter & Mask) == (Address & Mask)) Generate debug exception;
cdEngrEJTAGInstrBrkEntry	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.3.1		not-accessible	Each entry in this data table describes an Instruction Break. There is a row for each channel supported by the hardware.
I32 cdEngrEJTAGIBChannel	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.3.1.1	Integer32	read-only	The index for this table. This object represents the channel associated with the entries in this row. Channels within the EJTAG DSU may start with the zero value. Hence, it is acceptable for this index value to be zero. This index is unique for each row in the table.
T/F cdEngrEJTAGIBEnabled	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.3.1.2	TruthValue	read-write	This object represents the enabled status of the entry. If set to a value of 'true', the row is enabled for breaks. If set to a value of 'false', the row is not enabled.
OCT cdEngrEJTAGIBAddress	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.3.1.3	OCTET STRING	read-write	This object represents the Address for the Instruction Break. The EJTAG DSU will monitor for an instruction with the address given by this object.
OCT cdEngrEJTAGIBAddrMask	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.3.1.4	OCTET STRING	read-write	This object represents the Address Mask for the given address for the Instruction Break. The default mask is 0xffffffff (all address bits relevant). Be careful when specifying a mask, since many values (like 0, 1, etc) can cause an immediate break to occur.
OCT cdEngrEJTAGIBControl	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.3.1.5	OCTET STRING	read-only	This object represents the Control field for the Instruction Break.
cdEngrEJTAGDataBrkTable	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.4		not-accessible	This data table represents EJTAG Data Break configuration. It specifies a data break for the specified channel, address, and data value (with optional address and value masks). Hardware may place restrictions on the values (e.g. bit 0 of the address is likely forced to 0, and bit 0 of the mask is forced to 1). The default address mask is 0xffffffff (all address bits relevant), and the default value mask is 0x0f (all byte lanes relevant). Be careful when specifying an address mask, since many values (like 0, 1, etc) can cause an immediate break to occur. The data break behaves according to this pseudo-code: if (((DataAddr & AddressMask) == (Address & AddressMask)) && ((DataValue & ValueMask) == (Value & ValueMask))) Generate debug exception;
cdEngrEJTAGDataBrkEntry	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.4.1		not-accessible	Each entry in this data table describes a Data Break. There is a row for each channel supported by the hardware.
I32 cdEngrEJTAGDBChannel	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.4.1.1	Integer32	read-only	The index for this table. This object represents the channel associated with the entries in this row. Channels within the EJTAG DSU may start with the zero value. Hence, it is acceptable for this index value to be zero. This index is unique for each row in the table.
T/F cdEngrEJTAGDBEnabled	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.4.1.2	TruthValue	read-write	This object represents the enabled status of the entry. If set to a value of 'true', the row is enabled for breaks. If set to a value of 'false', the row is not enabled.
OCT cdEngrEJTAGDBAddress	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.4.1.3	OCTET STRING	read-write	This object represents the Address for the Data Break. The EJTAG DSU will monitor for a read-write with the address given by this object.
OCT cdEngrEJTAGDBAddrMask	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.4.1.4	OCTET STRING	read-write	This object represents the Address Mask for the given address for the Data Break. The default address mask is 0xffffffff (all address bits relevant). Be careful when specifying an address mask, since many values (like 0, 1, etc) can cause an immediate break to occur!
OCT cdEngrEJTAGDBDataVal	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.4.1.5	OCTET STRING	read-write	This object represents the data value associated with the Data Break. This is the data value that the EJTAG DSU looks for at the associated address
OCT cdEngrEJTAGDBDataMask	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.4.1.6	OCTET STRING	read-write	This object represents the Data Mask for the given data value for the Data Break. The default value mask is 0x0f (all byte lanes relevant).
OCT cdEngrEJTAGDBControl	1.3.6.1.4.1.4413.50.1.2.1.1.3.1.20.4.1.7	OCTET STRING	read-only	This object represents the Control field for the Data Break.

RFC description

Broadcom cable data factory MIB for engineering and diagnostics including EJTAG interface support.

Start monitoring Broadcom-chipset DOCSIS cable modems/gateways 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 BRCM-CABLEDATA-ENGINEERING-MIB

What Is BRCM-CABLEDATA-ENGINEERING-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description