docsPnmCmtsDsOfdmSymCaptFileName

DOCS-PNM-MIB · .1.3.6.1.4.1.4491.2.1.27.1.3.1.1.11

Object

column r/w SNMP-FRAMEWORK-MIBSnmpAdminString

This attribute is the name of the file with the captured symbol data at
the CMTS that is to be downloaded using TFTP by the PNM server.
              
This value can only be changed while a test is not in progress. An attempt
to set this value while the value of 'docsPnmCmtsDsOfdmSymMeasStatus' is
'busy' will return 'inconsistentValue'.
              
If the value of this object is the DEFVAL (empty string), then a default
filename value will be used. Otherwise the value set will be used as
the filename.
              
If a default filename value is used, it is generated as the test name
plus a unique CCAP identifier (either a loopback address (IPv4 or IPv6)
or FQDN), plus the 'epoch time'. The epoch time (also known as 'unix time')
is defined as the number of seconds that have elapsed since midnight
Coordinated Universal Time (UTC), Thursday, 1 January 1970.
Hence, the format would be:
              
    PNMCcapSymCap_<Unique CCAP Identifier>_<epoch>
              
For example: PNMCcapSymCap_ccap1.boulder.cablelabs.com_1403405123
              
The data file is comprised of a header plus the Symbol Capture Data.
The header is comprised of ordered fixed-length fields. Unless
otherwise specified, the header fields contain hex values that are
right-justified within the field. If necessary the field is left-padded
with zero values.
              
Syntax of the file is as follows:
 File Type set to '504E4D65' (without the quotes)      4 bytes
 Capture Time                                          4 bytes
 ifIndex                                               4 bytes
 Unique CCAP ID                                      256 bytes
 Subcarrier zero Frequency in Hz                       4 bytes
 PlcExtendedTimeStamp                                  8 bytes
 Subcarrier Spacing in kHz                             1 byte
 FirstActiveSubcarrierIndex                            2 bytes
 LastActiveSubcarrierIndex                             2 bytes
 TriggerGroupId                                        2 bytes
 Transaction ID                                        1 byte
 Length in bytes of Capture Data that follows          4 bytes
 Symbol Capture Data                                   ComplexData

Context

MIB: DOCS-PNM-MIB
OID: .1.3.6.1.4.1.4491.2.1.27.1.3.1.1.11
Type: column
Access: readwrite
Status: current
Parent: docsPnmCmtsDsOfdmSymCapEntry
Table: docsPnmCmtsDsOfdmSymCapTable
Siblings: 10

Syntax

SNMP-FRAMEWORK-MIBSnmpAdminString

Source: SNMP-FRAMEWORK-MIBSnmpAdminString
Base type: OctetString

Values & Constraints

Type Constraints

range: 0..255

Related Objects

Sibling Objects

Object	Type	Syntax	OID
docsPnmCmtsDsOfdmSymTrigEnable Setting this object to a value of 'true' instructs the CMTS to insert a Trigger Message Block in the PLC with a Group ID matching the CM's TriggerGroupID. The CMTS captures the Sy…	column	SNMPv2-TCTruthValue	`.1.3.6.1.4.1.4491.2.1.27.1.3.1.1.1`
docsPnmCmtsDsOfdmSymMeasStatus This attribute is used to determine the status of the measurement. The PNM server will query this value to determine when the measurement is complete.	column	MeasStatusType	`.1.3.6.1.4.1.4491.2.1.27.1.3.1.1.10`
docsPnmCmtsDsOfdmSymTrigGroupId This attribute is used by the CMTS to be inserted in the PLC Trigger Message Block to identify a CM or a group of CMs expected to perform Symbol Capture measurements for the desig…	column	Unsigned32	`.1.3.6.1.4.1.4491.2.1.27.1.3.1.1.2`
docsPnmCmtsDsOfdmSymFirstActSubCarIdx This object is used to denote the subcarrier index of the lowest frequency of the Encompassed Spectrum for the OFDM channel.	column	Unsigned32	`.1.3.6.1.4.1.4491.2.1.27.1.3.1.1.3`
docsPnmCmtsDsOfdmSymLastActSubCarIdx This object is used to denote the subcarrier index of the highest frequency of the Encompassed Spectrum for the OFDM channel.	column	Unsigned32	`.1.3.6.1.4.1.4491.2.1.27.1.3.1.1.4`
docsPnmCmtsDsOfdmSymRxWindowing This attribute is a flag indicating if vendor proprietary windowing was enabled during the capture.	column	SNMPv2-TCTruthValue	`.1.3.6.1.4.1.4491.2.1.27.1.3.1.1.5`
docsPnmCmtsDsOfdmSymPlcExtTimestamp This attribute is the 64 bit value of the Timestamp that was sent by the CMTS in the PLC frame containing the Trigger Message Block. If the exact value of the Extended Timestamp s…	column	OctetString	`.1.3.6.1.4.1.4491.2.1.27.1.3.1.1.6`
docsPnmCmtsDsOfdmSymTransactionId This attribute is the Transaction ID sent by the CMTS in the Trigger Message Block. Prior to completion of a measurement this attribute has no meaning.	column	Unsigned32	`.1.3.6.1.4.1.4491.2.1.27.1.3.1.1.7`
docsPnmCmtsDsOfdmSymSampleRate This attribute is the FFT sample rate in use by the CM for the channel; typically the sample rate for the downstream channel will be 204.8MHz.	column	Hz SNMPv2-SMIUnsigned32	`.1.3.6.1.4.1.4491.2.1.27.1.3.1.1.8`
docsPnmCmtsDsOfdmSymFftLength This attribute is the FFT length in use by the CM for the channel; typically this value is 4096 or 8192 for the Downstream Channel.	column	Unsigned32	`.1.3.6.1.4.1.4491.2.1.27.1.3.1.1.9`