Users Guide

Table Of Contents
160 Hardware Overview
SFP ports support 1000BASE-X and 100BASE-X (100BASE-FX/100BASE-
LX/100BASE-SX) transceivers. SFP ports with 1000BASE-X transceivers
require auto-negotiation to be enabled but also allow configuration of
forced speeds with auto-negotiation disabled. However, the SFP ports do
not support auto-negotiation for 100BASE-X transceivers. When the
switch detects a 100BASE-X transceiver, it resets the port to use 4B/5B
NRZI line coding from the default 8B/10B NRZ coding. This causes the
link to flap momentarily. The flap may be observed at the link partner
upon insertion of an SFP transceiver and on switch reboot. Administrators
should ensure that the link partner is set to accept a single link flap on
100BASE-X interfaces.
SFP+ ports support SFP+ transceivers and SFP+ copper twin-ax
technology operating at 10G/1G speeds in full-duplex mode. SFP
transceivers are supported in SFP+ ports and operate at 1G full-duplex.
SFP transceivers in an SFP+ port require auto-negotiation to be enabled
per the IEEE 802.3 standard but may be configured to use a forced speed
with auto-negotiation disabled.
The Dell EMC Networking N3024P/N3048P/N3048ET-ON/N3000 front-
panel ports support PoE (15.4W) and PoE+ (34.2W) as well as legacy
capacitive detection for pre-standard PDs.
Additionally, ports 1–12 support PoE 60W power when configured in high-
power mode.
Combo Ports
Combo ports automatically select the active media and always choose fiber
(SFP) media if both copper and fiber are active. Copper combo ports do not
support 10 Mbps forced mode. Auto-negotiation is not supported for
100BASE-X (FX/SX/LX) transceivers. If using the 1000BASE-T port, remove
any transceivers from the SFP port.
Console Port
The console port provides serial communication capabilities, which allows
communication using RS-232 protocol. The serial port provides a direct
connection to the switch and allows access to the CLI from a console
terminal connected to the port through the provided serial cable (with RJ45
YOST to female DB-9 connectors).