docsIf31CmtsDsOfdmChanCyclicPrefix
DOCS-IF31-MIB ·
.1.3.6.1.4.1.4491.2.1.28.1.19.1.14
Object
column number of samplesDsOfdmCyclicPrefix
Cyclic prefix enables the receiver to overcome the effects of inter-symbol-interference and intercarrier-interference caused by micro-reflections in the channel. There are five possible values for the length of the CP and the choice depends on the delay spread of the channel - a longer delay spread requires a longer cyclic prefix. The cyclic prefix (in usec) are converted into samples using the sample rate of 204.8 Msamples/s and is an integer multiple of: 1/64 * 20 us.
Context
- MIB
- DOCS-IF31-MIB
- OID
.1.3.6.1.4.1.4491.2.1.28.1.19.1.14- Type
- column
- Access
- readonly
- Status
- current
- Units
- number of samples
- Parent
- docsIf31CmtsDsOfdmChanEntry
- Groups
- 1
Net-SNMP examples
How SNMP and these commands workWalk the column to discover its indexed instances, or supply every index to read one instance.
Walk the column
/usr/bin/snmpbulkwalk -v2c -c '<community>' -Pud -Ir -OQUs -m 'DOCS-IF31-MIB' -M '/opt/observium/mibs/rfc:/opt/observium/mibs/net-snmp' 'udp:<hostname>:161' 'DOCS-IF31-MIB::docsIf31CmtsDsOfdmChanCyclicPrefix'
More examples
Read one indexed instance
/usr/bin/snmpget -v2c -c '<community>' -Pud -Ir -OQUv -m 'DOCS-IF31-MIB' -M '/opt/observium/mibs/rfc:/opt/observium/mibs/net-snmp' 'udp:<hostname>:161' 'DOCS-IF31-MIB::docsIf31CmtsDsOfdmChanCyclicPrefix.<ifIndex>'
Translate to a numeric OID
/usr/bin/snmptranslate -Pud -Ir -On -m 'DOCS-IF31-MIB' -M '/opt/observium/mibs/rfc:/opt/observium/mibs/net-snmp' 'DOCS-IF31-MIB::docsIf31CmtsDsOfdmChanCyclicPrefix'
Syntax
number of samplesDsOfdmCyclicPrefix
- Source
- DsOfdmCyclicPrefix
- Base type
Unsigned32
Values & Constraints
Type Constraints
range: 192
range: 256
range: 512
range: 768
range: 1024
Conformance
Member of