Administrator Guide

Table Of Contents
Hardware Overview 101
The Dell Networking 1524P front panel, shown in Figure 3-2, has status
LEDs for over-temperature alarm, internal power, and status on the top row.
The bottom row of status LEDs displays Stack Master, modular power supply
(MPS) status, and fan alarm status.
Switch Ports
The Dell Networking N1524/N1524P front panel provides 24 Gigabit
Ethernet (10/100/1000BASE-T) RJ-45 ports that support auto-negotiation for
speed, flow control, and duplex. The Dell Networking N1500 Series front-
panel ports operate in full- or half-duplex mode. The Dell Networking
N1524/N1524P models support four SFP+ 10G ports. Dell-qualified SFP+
transceivers are sold separately.
The Dell Networking N1548/N1548P front panel provides 48 Gigabit
Ethernet (10BASE-T, 100BASE-TX, 1000BASE-T) RJ-45 ports that support
auto-negotiation for speed, flow control, and duplex. The Dell Networking
N1500 Series front-panel ports operate in full- or half-duplex mode. The Dell
Networking N1548/N1548P supports four SFP+ 10G ports. Dell-qualified
SFP+ 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.
SFP+ ports support Dell-qualified transceivers utilizing 10GBASE-SR,
10GBASE-LR, 10GBASE-CR, or 1000BASE-X technologies. 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 front-panel ports support full- or half-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.
SFP+ post may be configured to support 16 GB stacking over Ethernet
cables. These ports may be configured to support stacking in pairs, e.g.,