Installation guide

Description of Hardware
1-3
1
Description of Hardware
10/100/1000BASE-T Ports
The switches contain 24/48 RJ-45 ports that operate at 10 Mbps or 100 Mbps, half
or full duplex, or at 1000 Mbps, full duplex. Because all ports on these switches
support automatic MDI/MDI-X operation, you can use straight-through cables for all
network connections to PCs or servers, or to other switches or hubs. (See
1000BASE-T Pin Assignments on page B-3.)
Each of these ports support auto-negotiation, so the optimum transmission mode
(half or full duplex), and data rate (10, 100, or 1000 Mbps) can be selected
automatically. If a device connected to one of these ports does not support
auto-negotiation, the communication mode of that port can be configured manually.
SFP Slots
The Small Form Factor Pluggable (SFP) transceiver slots are shared with four of the
RJ-45 ports (ports 21~24 for the ES4626F and ports 45~48 for the ES4650F). In its
default configuration, if an SFP transceiver (purchased separately) is installed in a
slot and has a valid link on its port, the associated RJ-45 port is disabled and cannot
be used. The switch can also be configured to force the use of an RJ-45 port or SFP
slot, as required.
10 Gigabit Ethernet Module Slots
These switches include two slots on the rear panel for hot-swappable single-port
10GBASE modules with XFP transceivers. Refer to Optional Media Extender
Modules on page 1-6 for more information on this module and the supported 10G
transceivers.
Stacking Ports
Each unit includes two stacking ports that provide a 48 Gbps high-speed serial stack
backplane connection. Up to eight 24-port or 48-port switches can be connected
together using optional stacking cables. Note that the 24-port and 48-port switches
can be mixed in the same stack. The Stack Master button enables one switch in the
stack to be selected as the Master unit for managing the entire stack.
Port and System Status LEDs
These switches include a display panel for key system and port indications that
simplify installation and network troubleshooting. The LEDs, which are located on
the front panel for easy viewing, are shown below and described in the following
tables.