CHAPTER 1 |
Introduction
Description of
Hardware
NETWORK MANAGEMENT
O
PTIONS
These switches contain a comprehensive array of LEDs for “at-a-glance”
monitoring of network and port status. They also include a management agent
that allows you to configure or monitor the switch using its embedded
management software, or via SNMP applications. To manage each switch, you
can make a direct connection to the console port (out-of-band), or you can
manage the switches through a network connection (in-band) using Telnet, the
on-board web agent, or SNMP-based network management software.
For a detailed description of the management features, refer to the Manag e ment
Guide.
D
ESCRIPTION OF HARDWARE
10/100/1000BASE-T
P
ORTS
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 74.)
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 TRANSCEIVER
S
LOTS
The Small Form Factor Pluggable (SFP) transceiver slots are shared with four of
the RJ-45 ports (ports 21–24 for the LGB6026A and ports 45–48 for the
LGB6050A). 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.
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