All MIBs › DOCS-IF31-MIB › docsIf31CmtsUsOfdmaChanTxBackoffStart
docsIf31CmtsUsOfdmaChanTxBackoffStart
Module: DOCS-IF31-MIB
OID (symbolic): DOCS-IF31-MIB::docsIf31CmtsUsOfdmaChanTxBackoffStart
OID (numeric): 1.3.6.1.4.1.4491.2.1.28.1.23.1.18
Node type: OBJECT-TYPE
Type: Integer32
Access: read-only
Description: The initial random backoff window to use when retrying transmissions. Expressed as a power of 2. A value of 16 at the CMTS indicates that a proprietary adaptive retry mechanism is to be used.
What is docsIf31CmtsUsOfdmaChanTxBackoffStart?
Reports the initial random transmission backoff window for this OFDMA upstream channel, expressed as a power of 2 (0-16); a value of 16 at the CMTS means a proprietary adaptive retry mechanism is used instead of the standard fixed exponential backoff. Admins can use this together with TxBackoffEnd to understand how aggressively modems on this channel are told to randomize retries after a collision, which affects contention performance under load.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.23.1.18 snmpwalk -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmtsUsOfdmaChanTxBackoffStart
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.23.1.18.1 snmpget -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmtsUsOfdmaChanTxBackoffStart.1
Start monitoring DOCSIS 3.1 cable modem/CMTS-CCAP (OFDM/OFDMA channels, vendor-neutral CableLabs standard) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DOCS-IF31-MIB::docsIf31CmtsUsOfdmaChanTxBackoffStart OID value, configure state conditions and alerts, and monitor any DOCSIS 3.1 cable modem/CMTS-CCAP (OFDM/OFDMA channels, vendor-neutral CableLabs standard) from a single console.
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 |
| 1.3.6.1.4.1.4491.2.1.28.1.23 | docsIf31CmtsUsOfdmaChanTable | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.23.1 | docsIf31CmtsUsOfdmaChanEntry | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.23.1.18 | docsIf31CmtsUsOfdmaChanTxBackoffStart | DOCS-IF31-MIB |