All MIBs › SHE-ETHERNET-MIB › sheEthernetPortSfpLaserBiasCurrent
sheEthernetPortSfpLaserBiasCurrent
Module: SHE-ETHERNET-MIB
OID (symbolic): SHE-ETHERNET-MIB::sheEthernetPortSfpLaserBiasCurrent
OID (numeric): 1.3.6.1.4.1.231.7.1.2.2.1.5.1.1.1.23
Node type: OBJECT-TYPE
Type: Unsigned32
Access: read-only
Description: Measured TX bias current in A. Represented as a 16 bit unsigned integer with the current defined as the full 16 bit value (0 .. 65535) with LSB equal to 2 A, yielding a total range of 0 to 131 mA. Accuracy is vendor specific but must be better than 10% of the manufacturers nominal value over specified operating temperature and voltage.
Only valid if sheEthernetPortSfpDiagnosticValid entry is true.
What is sheEthernetPortSfpLaserBiasCurrent?
This read-only Unsigned32 (0-65535, in units of 2 microamps per SFF-8472 table 3.17) reports the SFP transceiver's measured TX laser bias current, valid only when sheEthernetPortSfpDiagnosticValid is true. An admin monitors this since a drifting bias current is a classic early warning sign of laser aging or impending transmitter failure. A bias current trending upward over time toward the module's rated maximum would tell an admin that SFP's laser is aging and may need proactive replacement.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.231.7.1.2.2.1.5.1.1.1.23 snmpwalk -v2c -c public <target> SHE-ETHERNET-MIB::sheEthernetPortSfpLaserBiasCurrent
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.231.7.1.2.2.1.5.1.1.1.23.1 snmpget -v2c -c public <target> SHE-ETHERNET-MIB::sheEthernetPortSfpLaserBiasCurrent.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> sheEthernetPortSfpLaserBiasCurrent.1
Start monitoring Nokia Siemens Networks SHE DSLAM (Ethernet uplink config, EtherLike error counters, laser status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the SHE-ETHERNET-MIB::sheEthernetPortSfpLaserBiasCurrent OID value, configure state conditions and alerts, and monitor any Nokia Siemens Networks SHE DSLAM (Ethernet uplink config, EtherLike error counters, laser status) from a single console.
OID Breakdown
Upper-level ancestors (12 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 |
| 1.3.6.1.4.1.231 | sni | AN-MIB |
| 1.3.6.1.4.1.231.7 | siemensUnits | AN-MIB |
| 1.3.6.1.4.1.231.7.1 | oenProductMibs | AN-MIB |
| 1.3.6.1.4.1.231.7.1.2 | an | AN-MIB |
| 1.3.6.1.4.1.231.7.1.2.2 | ppe | AN-SHE-MIB |
| 1.3.6.1.4.1.231.7.1.2.2.1 | she | AN-SHE-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.231.7.1.2.2.1.5 | sheEthernetMib | SHE-ETHERNET-MIB |
| 1.3.6.1.4.1.231.7.1.2.2.1.5.1 | sheEthernet | SHE-ETHERNET-MIB |
| 1.3.6.1.4.1.231.7.1.2.2.1.5.1.1 | sheEthernetPortTable | SHE-ETHERNET-MIB |
| 1.3.6.1.4.1.231.7.1.2.2.1.5.1.1.1 | sheEthernetPortEntry | SHE-ETHERNET-MIB |
| 1.3.6.1.4.1.231.7.1.2.2.1.5.1.1.1.23 | sheEthernetPortSfpLaserBiasCurrent | SHE-ETHERNET-MIB |