All MIBs › IEEE8021-AS-MIB › ieee8021AsParentDSCumlativeRateRatio
ieee8021AsParentDSCumlativeRateRatio
Module: IEEE8021-AS-MIB
OID (symbolic): IEEE8021-AS-MIB::ieee8021AsParentDSCumlativeRateRatio
OID (numeric): 1.3.111.2.802.1.1.20.1.3.3
Node type: OBJECT-TYPE
Type: Integer32
Access: read-only
Description: The value is an estimate of the ratio of the frequency of the grandmaster to the frequency of the LocalClock entity of this time-aware system.
Cumulative rate ratio is expressed as the fractional frequency offset multiplied by 2**41, i.e., the quantity (rateRatio - 1.0)(2**41), where rateRatio is computed by the PortSyncSyncReceive state machine (see 10.2.7.1.4).
What is ieee8021AsParentDSCumlativeRateRatio?
An estimate of how much faster or slower the grandmaster's clock frequency runs relative to this device's local clock, expressed as a fractional offset scaled by 2^41. A value drifting far from zero over time indicates the local oscillator is aging or mismatched relative to the reference.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.111.2.802.1.1.20.1.3.3 snmpwalk -v2c -c public <target> IEEE8021-AS-MIB::ieee8021AsParentDSCumlativeRateRatio
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.111.2.802.1.1.20.1.3.3.1 snmpget -v2c -c public <target> IEEE8021-AS-MIB::ieee8021AsParentDSCumlativeRateRatio.1
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OID Breakdown
Upper-level ancestors (3 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.111.2.802.1.1 | ieee802dot1mibs | IEEE8021-TC-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.111.2.802.1.1.20 | ieee8021AsTimeSyncMib | IEEE8021-AS-MIB |
| 1.3.111.2.802.1.1.20.1 | ieee8021AsMIBObjects | IEEE8021-AS-MIB |
| 1.3.111.2.802.1.1.20.1.3 | ieee8021AsParentDS | IEEE8021-AS-MIB |
| 1.3.111.2.802.1.1.20.1.3.3 | ieee8021AsParentDSCumlativeRateRatio | IEEE8021-AS-MIB |