User manual

Introduction
2
NXA-ENET24 Hardware Installation Guide
W of power at the standard -48 DC voltage. Independent overload and short-circuit protection for each
port allows the switch to automatically shut down a port’s power when limits are exceeded.
Network devices such as IP phones, wireless access points, and network cameras, typically consume less
than 10 W of power, so they are ideal for Power-over-Ethernet applications.
Network Management Arrangement
With a comprehensive arrangement of LEDs, this switch provides “at a glance” monitoring of network
and port status. The switch can be managed over the network with a web browser Telnet application, or
via a direct connection to the console port. The switch includes a built-in network management agent
that allows it to be managed in-band using SNMP or RMON (Groups 1, 2, 3, 9) protocols. It also has an
RS-232 serial port (DB-9 connector) on the front panel for out-of-band management. A PC may be
connected to this port
for configuration and monitoring out-of-band via a null-modem serial cable. (See
“Cables” on page 31. for wiring options.)
For a detailed description of the advanced features, refer to the Software Configuration Guide
The switch uses DVMRP protocol to determine the routing for multicast packets. If no hosts have
subscribed to the indicated multicast service, the packet will be dropped.