Cisco Systems OL-7426-03 quick start Rssi, Rtos, Snr, Soho, Ssh, Ssid

RSSI

Received Signal Strength Indicator, also known as Signal Strength. A measure of received RF energy, measured in dBm.

RTOS

Real-time operating system. An operating system that features a guaranteed performance per time unit.

Rx

Receive.

Satellite Broadband

A wireless high-speed Internet connection provided by satellites. Some satellite broadband connections are two-way-up and down. Others are one-way, with the satellite providing a high-speed downlink and then using a dial-up telephone connection or other land-based system for the uplink to the Internet.

Server

A computer that provides its resources to other computers and devices on a network. These include print servers, Internet servers and data servers. A server can also be combined with a hub or router.

Site Survey

The process whereby a wireless network installer inspects a location prior to putting in a wireless network. Site surveys are used to identify the radio- and client-use properties of a facility so that access points can be optimally placed.

SNR

Signal to Noise Ratio. The ratio of signal intensity to noise intensity, measured in dB.

SOHO

A term generally used to describe an office or business with ten or fewer computers and/or employees.

SSH

Secure Shell; also known as Secure Socket Shell. SSH data transmissions and passwords to and from Cisco 4100 Series Wireless LAN Controller are encrypted and use digital certificates for authentication from both ends of the connection. SSH is always enabled for Cisco Wireless LAN Controllers.

When you plan to secure the Cisco Wireless LAN Controller Telnet Interface using the SSH protocol, note that the Operating System automatically generates its own local SSH certificate and automatically applies it to the Telnet Interface.

SSID

A 32-character unique identifier attached to the header of packets sent over a WLAN that acts as a name when a mobile device tries to connect to an access point. (Also called ESSID.) The SSID differen- tiates one WLAN from another, so all access points and all devices attempting to connect to a specific WLAN must use the same SSID. A device will not be permitted to associate with the AP unless it can provide the unique SSID. Because an SSID can be sniffed in plain text from a packet, it does not supply any security to the network. An SSID is also referred to as a Network Name because essentially it is a name that identifies a wireless network.

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