Service Manual

Support for LM4 Optics
The newly supported LM4 optics are similar in behavior to the LR4 optics that are already supported. However, in the output of
show inventory media command, an LM4 optical module is denoted as 40G-LM4. Barring this exception, the functionality and
behavior of LM4 optics is similar to LR4 optics.
Example Scenarios
Consider the following scenarios:
• QSFP port 0 is connected to a QSA with SFP+ optical cables plugged in.
• QSFP port 4 is connected to a QSA with SFP optical cables plugged in.
• QSFP port 8 in fanned-out mode is plugged in with QSFP optical cables.
• QSFP port 12 in 40 G mode is plugged in with QSFP optical cables.
For these congurations, the following examples show the command output that the show interfaces
tengigbitethernet transceiver, show interfaces tengigbitethernet, and show inventory media
commands displays:
Dell#show interfaces tengigabitethernet 1/1/1 transceiver
SFP+ 1/1 Serial ID Base Fields
SFP+ 1/1 Id = 0x0d
SFP+ 1/1 Ext Id = 0x00
SFP+ 1/1 Connector = 0x23
SFP+ 1/1 Transceiver Code = 0x08 0x00 0x00 0x00 0x00 0x00 0x00 0x00
SFP+ 1/1 Encoding = 0x00
………………
………………
SFP+ 1/1 Diagnostic Information
===================================
SFP+ 1/1 Rx Power measurement type = OMA
===================================
SFP+ 1/1 Temp High Alarm threshold = 0.000C
SFP+ 1/1 Voltage High Alarm threshold = 0.000V
SFP+ 1/1 Bias High Alarm threshold = 0.000mA
NOTE: In the following show interfaces tengigbitethernet commands, the ports 1/1,2/1, and 3/1 are inactive
and no physical SFP or SFP+ connection actually exists on these ports. However, Dell Networking OS still perceives
these ports as valid and the output shows that pluggable media (optical cables) is inserted into these ports. This is a
software limitation for this release.
Dell#show interfaces tengigabitethernet 1/1/1 transceiver
SFP+ 1/1 Serial ID Base Fields
SFP+ 1/1 Id = 0x0d
SFP+ 1/1 Ext Id = 0x00
SFP+ 1/1 Connector = 0x23
……………………….
Dell#show interfaces tengigabitethernet 1/2/1 transceiver
SFP+ 2/1 Serial ID Base Fields
SFP+ 2/1 Id = 0x0d
SFP+ 2/1 Ext Id = 0x00
SFP+ 2/1 Connector = 0x23
……………………….
Dell#show interfaces tengigabitethernet 1/3/1 transceiver
SFP+ 3/1 Serial ID Base Fields
SFP+ 3/1 Id = 0x0d
SFP+ 3/1 Ext Id = 0x00
SFP+ 3/1 Connector = 0x23
……………………….
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Interfaces