All MIBs › DOCS-IF31-MIB › docsIf31CmUsOfdmaChanNumSymbolsPerFrame
docsIf31CmUsOfdmaChanNumSymbolsPerFrame
Module: DOCS-IF31-MIB
OID (symbolic): DOCS-IF31-MIB::docsIf31CmUsOfdmaChanNumSymbolsPerFrame
OID (numeric): 1.3.6.1.4.1.4491.2.1.28.1.13.1.9
Node type: OBJECT-TYPE
Type: Unsigned32
Access: read-only
Description: This attribute is the number of symbol periods per frame. For channel bandwidth greater than 72MHz, the maximum number of symbol periods per frame is 18 for 2K mode and 9 for 4K mode. For channel bandwidth less than 72 MHz but greater than 48MHz, the maximum number of symbols per frame is 24 for 2K mode and 12 for 4K mode. For channel bandwidth less than 48MHz, the maximum number of symbol periods is 36 for 2K mode and 18 for 4K mode. The minimum number of symbol periods per frame is 6 for both the FFT modes and is independent of the channel bandwidth.
What is docsIf31CmUsOfdmaChanNumSymbolsPerFrame?
Reports the number of OFDMA symbol periods per upstream frame on this channel; the DOCSIS 3.1 spec caps this differently by channel bandwidth and FFT mode (for example, up to 18 symbols in 2K mode or 9 in 4K mode for bandwidths above 72 MHz, down to a minimum of 6 symbols per frame in all cases). This is mostly a configuration/verification value for admins confirming the channel's frame structure matches its bandwidth and FFT mode rather than something tuned directly.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.13.1.9 snmpwalk -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmUsOfdmaChanNumSymbolsPerFrame
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.13.1.9.1 snmpget -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmUsOfdmaChanNumSymbolsPerFrame.1
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OID Breakdown
Upper-level ancestors (9 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.4491 | cableLabs | CLAB-DEF-MIB |
| 1.3.6.1.4.1.4491.2 | clabProject | CLAB-DEF-MIB |
| 1.3.6.1.4.1.4491.2.1 | clabProjDocsis | CLAB-DEF-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.4491.2.1.28 | docsIf31Mib | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1 | docsIf31MibObjects | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.13 | docsIf31CmUsOfdmaChanTable | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.13.1 | docsIf31CmUsOfdmaChanEntry | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.13.1.9 | docsIf31CmUsOfdmaChanNumSymbolsPerFrame | DOCS-IF31-MIB |