Deployment Guide

NOTE: You cannot enable 1G speed on any port with auto-negotiation enabled. As a result, when you connect to a device
using SFP, the link does not come up if auto-negotiation is enabled. To use a port in 1G speed, disable auto-negotiation.
This limitation applies only when you convert QSFP to SFP using the QSA. This constraint does not apply for QSFP to SFP+
conversions using the QSA.
NOTE: You can use a copper SFP module on QSFP ports using a QSA adapter.
Important Points to Remember
● Starting from Dell OS 9.7(0.0), as part of dynamic fan-out support, only 96 ports can be split into 10G mode. Remaining
eight ports stay in 40G. For more information, see Splitting 40G Ports without Reload on page 391.
● 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 first 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.
● You can use the QSA on any of the ports.
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 configurations, 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 0/0 transceiver
SFP+ 0 Serial ID Base Fields
SFP+ 0 Id = 0x0d
SFP+ 0 Ext Id = 0x00
SFP+ 0 Connector = 0x23
SFP+ 0 Transceiver Code = 0x08 0x00 0x00 0x00 0x00 0x00 0x00 0x00
SFP+ 0 Encoding = 0x00
………………
………………
SFP+ 0 Diagnostic Information
===================================
SFP+ 0 Rx Power measurement type = OMA
===================================
SFP+ 0 Temp High Alarm threshold = 0.000C
SFP+ 0 Voltage High Alarm threshold = 0.000V
SFP+ 0 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
Interfaces 395