Users Guide

148 Hardware Overview
Figure 3-18. Dell EMC Networking N2248PX Switch (Rear Panel)
N2200X-ON Series Switch Ports
The Dell EMC Networking N2200X-ON Series front panel provides 24 or 48
10/100/1000/2500BASE-T Ethernet RJ-45 ports that support auto-negotiation
for speed, flow control, and duplex. Dell EMC Networking N2200X-ON
Series switch front panel 2.5G ports operate in full-duplex at all speeds or
half-duplex at 10/100 Mbps speeds. The Dell EMC Networking N2200X-ON
Series switch models support four 10G/25G SFP28 ports and two 40G QSFP
stacking ports. Dell-qualified transceivers are sold separately.
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.
• The 10/100/1000/2500BASE-T Ethernet RJ-45 ports support full-duplex
mode 10/100/1000/2500 Mbps speeds or half-duplex 10/100 Mbps speeds
on standard Category 5 UTP cable. 2500BASE-T operation requires the
use of auto-negotiation.
• SFP28 ports support Dell-qualified transceivers utilizing 25GBASE-SR,
25GBASE-LR, 25GBASE-CR, 25GBASE-CR-S or 25GBASE-ER
technologies. SFP28 ports support SFP+ fiber transceivers and SFP+
copper twin-ax or DAC technology operating at 10G speeds in full-duplex
mode. All SFP28 ports must be configured to operate at the same speed.
25GBASE-CR and 10G-BASE-CR modes (copper twin-ax or DAC cables)
require the use of auto-negotiation.
• The default behavior is to log a message and generate an SNMP trap on
insertion or removal of a transceiver that is not qualified by Dell. The
message and trap can be suppressed by using the service unsupported-
transceiver command.
On the N2224X-ON/N2224PX-ON switches, ports 1-12 may be configured to
support 10M/100M half-duplex.
On the N2248X-ON switches, ports 5-36 may be configured to support
10M/100M half-duplex.