Concept Guide

Important Points to Remember
• Before using the QSA to convert a 40 Gigabit Ethernet port to a 10 Gigabit SFP or SFP+ port, enable 40 G to 4*10 fan-out mode on
the device.
• When you insert a QSA into a 40 Gigabit port, you can use only the rst 10 Gigabit port in the fan-out mode to plug-in SFP or SFP+
cables. The remaining three 10 Gigabit ports are perceived to be in Link Down state and are unusable.
• You cannot use QSFP Optical cables on the same port where QSA is used.
• When you remove the QSA module alone from a 40 Gigabit port, without connecting any SFP or SFP+ cables; Dell Networking OS
does not generate any event. However, when you remove a QSA module that has SFP or SFP+ optical cables plugged in, Dell
Networking OS generates an SFP or SFP+ Removed event.
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 1/40 transceiver
SFP+ 1 Serial ID Base Fields
SFP+ 1 Id = 0x0d
SFP+ 1 Ext Id = 0x00
SFP+ 1 Connector = 0x23
SFP+ 1 Transceiver Code = 0x08 0x00 0x00 0x00 0x00 0x00 0x00 0x00
SFP+ 1 Encoding = 0x00
………………
………………
SFP+ 1 Diagnostic Information
===================================
SFP+ 1 Rx Power measurement type = OMA
===================================
SFP+ 1 Temp High Alarm threshold = 0.000C
SFP+ 1 Voltage High Alarm threshold = 0.000V
SFP+ 1 Bias High Alarm threshold = 0.000mA
NOTE
: In the following show interfaces tengigbitethernet commands, the ports 1,2, and 3 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 transceiver
SFP+ 1 Serial ID Base Fields
SFP+ 1 Id = 0x0d
SFP+ 1 Ext Id = 0x00
SFP+ 1 Connector = 0x23
……………………….
Dell#show interfaces tengigabitethernet 1/2 transceiver
SFP+ 1 Serial ID Base Fields
SFP+ 1 Id = 0x0d
SFP+ 1 Ext Id = 0x00
SFP+ 1 Connector = 0x23
……………………….
444
Interfaces