All MIBs › ADSL2-LINE-MIB › adsl2SCStatusLinReal
adsl2SCStatusLinReal
Module: ADSL2-LINE-MIB
OID (symbolic): ADSL2-LINE-MIB::adsl2SCStatusLinReal
OID (numeric): 1.3.6.1.2.1.10.238.1.2.2.1.8
Node type: OBJECT-TYPE
Type: OCTET STRING
Access: read-only
Description: An array of up to 512 complex H(f) linear representation values in linear scale for the respective transmission direction. It is designed to support up to 512 (downstream) sub-carriers. The number of utilized values on downstream direction depends on NSCds, and on upstream direction it depends on NSCus. This value is referred to here as NSC. Each array entry represents the real component [referred to here as a(i)] of Hlin(f = i*Df) value for a particular sub-carrier index i (0 <= i < NSC). Hlin(f) is represented as ((scale/2^15)*((a(i)+j*b(i))/2^15)), where scale is Adsl2SubcarrierLinScale and a(i) and b(i) [provided by the Adsl2SubcarrierLinImg object] are in the range (-2^15+1) to (+2^15-1). A special value a(i)=b(i)= -2^15 indicates that no measurement could be done for the subcarrier because it is out of the passband or that the attenuation is out of range to be represented. This parameter is only available after a loop diagnostic procedure.
Each value in this array is 16 bits wide and is stored in big endian format.
What is adsl2SCStatusLinReal?
This array holds up to 512 real (non-imaginary) components of the H(f) complex channel frequency response, one per sub-carrier frequency point, stored as binary data. Engineers analyze these real components along with imaginary parts to fully characterize how the ADSL line distorts signals at different frequencies and diagnose quality issues. Example: a 128-byte array where bytes [0x0F, 0x1A, 0x12, ...] represent channel response magnitudes at sub-carriers 0, 1, 2, and so on.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.10.238.1.2.2.1.8 snmpwalk -v2c -c public <target> ADSL2-LINE-MIB::adsl2SCStatusLinReal
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.10.238.1.2.2.1.8.1 snmpget -v2c -c public <target> ADSL2-LINE-MIB::adsl2SCStatusLinReal.1
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OID Breakdown
Upper-level ancestors (7 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 |
| 1.3.6.1.2 | mgmt | AXON-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| 1.3.6.1.2.1.10 | transmission | CHECKPOINT-MIB-2 |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.10.238 | adsl2MIB | ADSL2-LINE-MIB |
| 1.3.6.1.2.1.10.238.1 | adsl2 | ADSL2-LINE-MIB |
| 1.3.6.1.2.1.10.238.1.2 | adsl2Status | ADSL2-LINE-MIB |
| 1.3.6.1.2.1.10.238.1.2.2 | adsl2SCStatusTable | ADSL2-LINE-MIB |
| 1.3.6.1.2.1.10.238.1.2.2.1 | adsl2SCStatusEntry | ADSL2-LINE-MIB |
| 1.3.6.1.2.1.10.238.1.2.2.1.8 | adsl2SCStatusLinReal | ADSL2-LINE-MIB |