Administrator Guide

Hardware Overview 111
The front-panel switch ports have the following characteristics:
• The switch automatically detects the difference between crossed and
straight-through cables on RJ-45 ports and automatically chooses the MDI
or MDIX configuration to match the other end.
• SFP+ ports support Dell-qualified transceivers. The default behavior is to
log a message and generate an SNMP trap on insertion or removal of an
optic that is not qualified by Dell. The message and trap can be suppressed
by using the
service unsupported-transceiver command.
• RJ-45 ports support full-duplex mode 10/100/1000 Mbps speeds on
standard Category 5 UTP cable. 1000BASE-T operation requires the use of
auto-negotiation.
• SFP+ ports support SFP+ transceivers and SFP+ copper twin-ax
technology operating at 10G or 1G speeds in full-duplex mode. SFP
transceivers are supported in SFP+ ports and operate at 1G full-duplex.
SFP transceivers require auto-negotiation to be enabled.
• The Dell Networking N2024P/N2048P front-panel ports support PoE
(15.4W) and PoE+ (34.2W) as well as legacy capacitive detection for pre-
standard powered devices (PDs). Additionally, ports 1–12 support UPOE
(60W) power when configured in high-power mode.
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).
The console port is separately configurable and can be run as an asynchronous
link from 1200 baud to 115,200 baud.
The Dell CLI only supports changing the speed. The defaults are 9600 baud
rate, 8 data bits, No Parity, 1 Stop Bit, No Flow Control.
USB Port
The Type-A, female USB port supports a USB 2.0-compliant flash memory
drive. The Dell Networking N-Series switch can read or write to a flash drive
with a single partition formatted as FAT-32. Use a USB flash drive to copy
switch configuration files and images between the USB flash drive and the