docsPnmCmtsUsOfdmaRxMerFileName

Object

column r/w SNMP-FRAMEWORK-MIBSnmpAdminString

This attribute is the name of the file with the RxMER data for a
specified CM at the CMTS that is to be downloaded using TFTP to 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
'docsPnmCmtsUsOfdmaRxMerMeasStatus' 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:
              
    PNMCcapRxMER_<Unique CCAP Identifier>_<epoch>
              
For example: PNMCcapRxMER_ccap1.boulder.cablelabs.com_1403405123
              
The data file is comprised of a header plus the Histogram 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 '504E4D69' (without the quotes)      4 bytes
 Capture Time                                          4 bytes
 ifIndex                                               4 bytes
 Unique CCAP ID                                      256 bytes
 CM MAC Address                                        6 bytes
 Number of Averages                                    2 bytes
 PreEq On or Off                                       1 byte
 Subcarrier zero center frequency                      4 bytes
 FirstActiveSubcarrierIndex                            2 bytes
 Subcarrier Spacing in kHz                             1 byte
 Length in bytes of RxMERData                          4 bytes
 Subcarrier RxMER data                                 RxMerData

Context

MIB: DOCS-PNM-MIB
OID: .1.3.6.1.4.1.4491.2.1.27.1.3.7.1.6
Type: column
Access: readwrite
Status: current
Parent: docsPnmCmtsUsOfdmaRxMerEntry
Table: docsPnmCmtsUsOfdmaRxMerTable
Siblings: 5

Related Objects

Sibling Objects

Object	Type	Syntax	OID
docsPnmCmtsUsOfdmaRxMerEnable This attribute causes the CMTS to begin a measurement of the received MER per subcarrier for the CM whose MAC address was specified in the CmMac attribute. Interact…	column	SNMPv2-TCTruthValue	`.1.3.6.1.4.1.4491.2.1.27.1.3.7.1.1`
docsPnmCmtsUsOfdmaRxMerCmMac This attribute represents the MAC address of the CM whose Rx MER is being measured. This object cannot be changed while a capture is in progress. It will return a v…	column	SNMPv2-TCMacAddress	`.1.3.6.1.4.1.4491.2.1.27.1.3.7.1.2`
docsPnmCmtsUsOfdmaRxMerPreEq This attribute is used by the CMTS to enable or disable Pre Equalization of the probe. The Pre Equalization is controlled by a bit in the Probe Information Element sent in a MAP t…	column	SNMPv2-TCTruthValue	`.1.3.6.1.4.1.4491.2.1.27.1.3.7.1.3`
docsPnmCmtsUsOfdmaRxMerNumAvgs This attribute controls the number of probes the CMTS will use to calculate the Rx MER per subcarrier. The average will be computed using the 'leaky integrator' method, where repo…	column	Unsigned32	`.1.3.6.1.4.1.4491.2.1.27.1.3.7.1.4`
docsPnmCmtsUsOfdmaRxMerMeasStatus This attribute is used to determine the status of the measurement. When the MeasStatus = SampleReady, the CMTS is ready for the RxMER data to be read.	column	MeasStatusType	`.1.3.6.1.4.1.4491.2.1.27.1.3.7.1.5`

Object

Context

Syntax

Values & Constraints

Related Objects