D
ESCRIPTION
OF
H
ARDWARE
1-3
Network Management Options
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 a switch, you
can make a direct connection to the RS-232 console port (out-of-band), or
you can manage it through a network connection (in-band) using Telnet, the
on-board Web agent, or Windows-based network management software.
For a detailed description of the switch’s advanced features, refer to the
SMC6128PL2 Management Guide.
Description of Hardware
10/100BASE-T Ports
The PoE switch base unit contains 24 10BASE-T/100BASE-TX RJ-45
ports. All ports support automatic MDI/MDI-X operation, so you can use
straight-through cables for all network connections to PCs or servers, or to
other switches or hubs. (See “10/100BASE-TX Pin Assignments” on page
B-2.)
Each of these ports support auto-negotiation, so the optimum transmission
mode (half or full duplex), and data rate (10 or 100 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.
Each port also supports IEEE 802.3x auto-negotiation of flow control, so
the switch can automatically prevent port buffers from becoming saturated.
SFP Slots
The Small Form Factor Pluggable (SFP) transceiver slots are shared with two
of the RJ-45 ports. 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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