All MIBs › ADSL2-LINE-MIB › adsl2SCStatusSnrMargin
adsl2SCStatusSnrMargin
Module: ADSL2-LINE-MIB
OID (symbolic): ADSL2-LINE-MIB::adsl2SCStatusSnrMargin
OID (numeric): 1.3.6.1.2.1.10.238.1.2.2.1.16
Node type: OBJECT-TYPE
Type: Integer32
Access: read-only
Description: SNR Margin is the maximum increase in dB of the noise power received at the ATU (ATU-R on downstream direction and ATU-C on upstream direction), such that the BER requirements are met for all bearer channels received at the ATU. It ranges from -640 to 630 units of 0.1 dB (physical values are -64 to 63 dB). A special value of 0x7FFFFFFF (2147483647) indicates the SNR Margin is out of range to be represented. A special value of 0x7FFFFFFE (2147483646) indicates the SNR Margin measurement is currently unavailable. This object reflects the value of the parameter following the most recent DELT performed on the associated line. Once
the DELT process is over, the parameter no longer changes until the row is deleted or a new DELT process is initiated.
What is adsl2SCStatusSnrMargin?
This integer (-640 to 630 in 0.1dB units) represents the SNR margin—how much additional noise the link tolerates before the bit error rate target is missed, measured in tenths of a dB. A positive margin means safety headroom; engineers monitor this to predict line stability and know when reconfiguration or line replacement is needed before outage occurs. Example: a margin of 120 (12dB) is healthy with good stability, while a value of 5 (0.5dB) means the line is barely meeting specs and will drop soon.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.10.238.1.2.2.1.16 snmpwalk -v2c -c public <target> ADSL2-LINE-MIB::adsl2SCStatusSnrMargin
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.10.238.1.2.2.1.16.1 snmpget -v2c -c public <target> ADSL2-LINE-MIB::adsl2SCStatusSnrMargin.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> adsl2SCStatusSnrMargin.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 |
| 1.3.6.1.2.1.10.238.1.2.2.1.16 | adsl2SCStatusSnrMargin | ADSL2-LINE-MIB |