ECS: How to identify the model an SPF connected to a node network interface. How to get the part number for a Dell SFP/cable.
Summary: It is often difficult to identify the type of cable or Small Form-Factor Pluggable (SFP) used in an environment to help diagnose an issue.
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Instructions
How to identify an SFP type and model connected to an ECS node.
Network interfaces that use an SFP can be frontend interfaces slave-0 and slave-1 on Generation 1 or 2. Frontend interfaces slave-0, slave-1 and backend interfaces pslave-0, pslave-1 on Gen 3
Command:
# sudo ethtool -m <network interface>
Example: (Copper connection)
admin@node1:~> sudo ethtool -m slave-0
Identifier : 0x03 (SFP)
Extended identifier : 0x04 (GBIC/SFP defined by 2- wire interface ID)
Connector : 0x23 (No separable connector)
Transceiver codes : 0x01 0x00 0x00 0x00 0x00 0x04 0x80 0xf5
Transceiver type : Infiniband: 1X Copper Passive
Transceiver type : Passive Cable
Transceiver type : FC: Twin Axial Pair (TW)
Transceiver type : FC: 1200 MBytes/sec
Transceiver type : FC: 800 MBytes/sec
Transceiver type : FC: 400 MBytes/sec
Transceiver type : FC: 200 MBytes/sec
Transceiver type : FC: 100 MBytes/sec
Encoding : 0x06 (64B/66B)
BR, Nominal : 25500MBd
Rate identifier : 0x00 (unspecified)
Length (SMF,km) : 0km
Length (SMF) : 0m
Length (50um) : 0m
Length (62.5um) : 0m
Length (Copper) : 2m
Length (OM3) : 0m
Passive Cu cmplnce. : 0x01 (SFF-8431 appendix E) [SFF-8472 rev10.4 only]
Vendor name : DELL
Vendor OUI : 3c:18:a0
Vendor PN : D0R73
Vendor rev : A0
Option values : 0x00 0x00
BR margin, max : 103%
BR margin, min : 0%
Vendor SN : CN0LXD0093517LL
Date code : 190305
Optical diagnostics support : No
Example: (Optical)
admin@node1:~> sudo ethtool -m slave-0
Identifier : 0x03 (SFP)
Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID)
Connector : 0x07 (LC)
Transceiver codes : 0x10 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Transceiver type : 10G Ethernet: 10G Base-SR
Encoding : 0x06 (64B/66B)
BR, Nominal : 10300MBd
Rate identifier : 0x00 (unspecified)
Length (SMF,km) : 0km
Length (SMF) : 0m
Length (50um) : 80m
Length (62.5um) : 30m
Length (Copper) : 0m
Length (OM3) : 300m
Laser wavelength : 850nm
Vendor name : DELL
Vendor OUI : 00:17:6a
Vendor PN : WTRD1
Vendor rev : A0
Option values : 0x00 0x1a
Option : RX_LOS implemented
Option : TX_FAULT implemented
Option : TX_DISABLE implemented
BR margin, max : 0%
BR margin, min : 0%
Vendor SN : AD858A01EJ
Date code : 180510
Optical diagnostics support : Yes
Laser bias current : 6.520 mA
Laser output power : 0.5716 mW / -2.43 dBm
Receiver signal average optical power : 0.3608 mW / -4.43 dBm
Module temperature : 44.32 degrees C / 111.78 degrees F
Module voltage : 3.3291 V
Alarm/warning flags implemented : Yes
Laser bias current high alarm : Off
Laser bias current low alarm : Off
Laser bias current high warning : Off
Laser bias current low warning : Off
Laser output power high alarm : Off
Laser output power low alarm : Off
Laser output power high warning : Off
Laser output power low warning : Off
Module temperature high alarm : Off
Module temperature low alarm : Off
Module temperature high warning : Off
Module temperature low warning : Off
Module voltage high alarm : Off
Module voltage low alarm : Off
Module voltage high warning : Off
Module voltage low warning : Off
Laser rx power high alarm : Off
Laser rx power low alarm : Off
Laser rx power high warning : Off
Laser rx power low warning : Off
Laser bias current high alarm threshold : 10.500 mA
Laser bias current low alarm threshold : 2.500 mA
Laser bias current high warning threshold : 10.500 mA
Laser bias current low warning threshold : 2.500 mA
Laser output power high alarm threshold : 2.0000 mW / 3.01 dBm
Laser output power low alarm threshold : 0.1260 mW / -9.00 dBm
Laser output power high warning threshold : 0.7900 mW / -1.02 dBm
Laser output power low warning threshold : 0.3170 mW / -4.99 dBm
Module temperature high alarm threshold : 85.00 degrees C / 185.00 degrees F
Module temperature low alarm threshold : -5.00 degrees C / 23.00 degrees F
Module temperature high warning threshold : 80.00 degrees C / 176.00 degrees F
Module temperature low warning threshold : 0.00 degrees C / 32.00 degrees F
Module voltage high alarm threshold : 3.6000 V
Module voltage low alarm threshold : 3.0000 V
Module voltage high warning threshold : 3.4600 V
Module voltage low warning threshold : 3.1300 V
Laser rx power high alarm threshold : 2.0000 mW / 3.01 dBm
Laser rx power low alarm threshold : 0.0315 mW / -15.02 dBm
Laser rx power high warning threshold : 0.7900 mW / -1.02 dBm
Laser rx power low warning threshold : 0.0315 mW / -15.02 dBm
The output above can help identify the part number, vendor, and more information about the interfaces being reviewed.
Additional Information
To obtain similar information for a Gen 3 switch, see ECS: How to identify the SFP part number on a Gen 3 switch.
Affected Products
ECS ApplianceProducts
ECS ApplianceArticle Properties
Article Number: 000021756
Article Type: How To
Last Modified: 24 Sept 2025
Version: 5
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