Table of Contents
Advertisement
PoE (Power over Ethernet) Support
The SecureStack C3K122‐24P switch is 802.3af compliant, which means it can provide Power over
Ethernet cable connections from its twenty‐four, RJ45 front panel connectors to Powered Devices
(PDs) in the network.
Power over Ethernet (PoE) refers to the ability to provide 48 Vdc power to a powered device using
the same Ethernet cabling that provides data. Modern Ethernet implementations employ
differential signals over twisted pair cables. This requires a minimum of two twisted pairs for a
single physical link. Both ends of the cable are isolated with transformers blocking any DC or
common mode voltage on the signal pair. PoE exploits this fact by using two twisted pairs as the
two conductors to supply a direct current. One pair carries the power supply current and the other
pair provides a path for the return current. While several proprietary legacy implementations of
PoE have been deployed by LAN equipment vendors, in 2003 the IEEE published the IEEE
802.3af‐2003 specification, which is part of the 802.3 suite of standards.
The switch is fully compliant with the IEEE 802.3af standard. It supports the standard resistor‐
based detection method, as well as AC disconnect capability. The switch is also capable of
supplying 15.4 watts of power to all ports simultaneously.
Powered Device Classifications
PDs are devices that receive their operating 48 Vdc power through a new or existing Ethernet
cable from a switch or other device that can provide a PoE‐compliant port connection. This
enables the PD to operate in a location without local power. For example:
•
Devices such as PoE‐compliant remote EXIT signs and Personal Data Assistants (PDAs),
•
Devices that support Voice over IP such as PoE‐compliant digital telephones,
•
Devices that support Wireless Application Protocol (WAP) such as security cameras, laptop
PCs, and many more devices.
Management
Management of the switch can be either in‐band or out‐of‐band. In‐band remote management is
possible using Telnet, Enterasys Networks NetSight
application. Out‐of‐band management is provided through the DB9 console port on the front
panel using a VT100 terminal or a VT100 terminal emulator.
Switch Configuration Using WebView
Enterasys Networks HTTP‐based Web management application (WebView) is an intuitive web
tool for simple management tasks.
Caution: The C3K122-24 and C3K172-24 are not PoE-compliant devices. Do not
connect a SecureStack C2 PoE Redundant Power System (C2RPS-POE) to the power
connector. Otherwise, damage to the device may result.
Precaución: El dispositivo C3K122-24 y C3K172-24 no cumple con el estándar PoE. No
conecte una fuente de poder redundante (RPS) SecureStack C2 PoE (C2RPS-POE) al
cable de corriente directa. De lo contrario, el dispositivo puede dañarse.
PoE (Power over Ethernet) Support
®
management application, or the WebView
SecureStack C3K Hardware Installation Guide 1-5
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
