All MIBs › HUAWEI-ADSLNNI-MIB › hwadslnniSCStatusSnr
hwadslnniSCStatusSnr
Module: HUAWEI-ADSLNNI-MIB
OID (symbolic): HUAWEI-ADSLNNI-MIB::hwadslnniSCStatusSnr
OID (numeric): 1.3.6.1.4.1.2011.6.143.1.1.5.1.2
Node type: OBJECT-TYPE
Type: OCTET STRING
Access: read-only
Description: The SNR Margin per sub-carrier, expressing the ratio between the received signal power and received noise power per subscriber. It is an array of 512 octets, designed for supporting up to 512 (downstream) sub-carriers. The number of utilized octets on downstream direction depends on NSCds, and on upstream direction it depends on NSCus. This value is referred here as NSC. Octet i (0 <= i < NSC) is set to a value in the range 0 to 254 to indicate that the respective downstream or upstream sub- carrier i has SNR of: (-32 + Adsl2SubcarrierSnr(i)/2) in dB (i.e., -32 to 95dB). The special value 255 means that no measurement could be done for the subcarrier because it is out of the PSD mask passband or that the noise PSD is out of range to be represented. Each value in this array is 8 bits wide.
What is hwadslnniSCStatusSnr?
This read-only octet string (up to 512 bytes, one byte per sub-carrier) gives the per-sub-carrier SNR margin for either the upstream or downstream direction, where each byte i decodes to (-32 + value/2) dB and the special value 255 marks a sub-carrier that's out of the PSD mask or otherwise unmeasurable. Plotting this array is the standard way to see exactly which frequency sub-carriers are noisy on a line, rather than relying on the single aggregate SNR margin figure.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2011.6.143.1.1.5.1.2 snmpwalk -v2c -c public <target> HUAWEI-ADSLNNI-MIB::hwadslnniSCStatusSnr
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2011.6.143.1.1.5.1.2.1 snmpget -v2c -c public <target> HUAWEI-ADSLNNI-MIB::hwadslnniSCStatusSnr.1
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OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4.1.2011 | huawei | HUAWEI-3COM-OID-MIB |
| 1.3.6.1.4.1.2011.6 | huaweiUtility | HUAWEI-3COM-OID-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2011.6.143 | hwAdslnniMIB | HUAWEI-ADSLNNI-MIB |
| 1.3.6.1.4.1.2011.6.143.1 | hwAdslnni | HUAWEI-ADSLNNI-MIB |
| 1.3.6.1.4.1.2011.6.143.1.1 | hwAdslnniCfg | HUAWEI-ADSLNNI-MIB |
| 1.3.6.1.4.1.2011.6.143.1.1.5 | hwAdslnniSCStatusTable | HUAWEI-ADSLNNI-MIB |
| 1.3.6.1.4.1.2011.6.143.1.1.5.1 | hwAdslnniSCStatusEntry | HUAWEI-ADSLNNI-MIB |
| 1.3.6.1.4.1.2011.6.143.1.1.5.1.2 | hwadslnniSCStatusSnr | HUAWEI-ADSLNNI-MIB |