Console server


Console server
A 32-port serial console server

A console server (console access server, console management server, serial concentrator, or serial console server) is a device or service that provides access to the system console of a computing device via networking technologies.

Most commonly, a console server provides a number of serial ports, which are then connected to the serial ports of other equipment, such as servers, routers or switches. The consoles of the connected devices can then be accessed by connecting to the console server over a serial link such as a modem, or over a network with terminal emulator software such as telnet or ssh, maintaining survivable connectivity that allows remote users to log in the various consoles without being physically nearby.

Description

Dedicated console server appliances are available from a number of manufacturers in many configurations, with the number of serial ports ranging from one to 48. These Console Servers are primarily used for secure remote access to Unix Servers, Linux Servers, Windows Servers and any device on the network with a console port. The purpose is to allow network operations center (NOC) personnel to perform secure remote data center management and out-of-band management of IT assets from anywhere in the world. Products marketed as Console Servers usually have highly advanced security functionality to ensure that only qualified personnel can access various servers and that any data that is transmitted across the LAN, or over the Internet, is encrypted. Marketing a product as a console server is very application specific because it really refers to what the user wants to do—remotely control, monitor, diagnose and troubleshoot equipment over a network or the Internet.

Some users have created their own console servers using off-the-shelf commodity computer hardware, usually with multiport serial cards typically running a slimmed-down Unix-like operating system such as Linux. Such "home-grown" console servers can be less expensive, especially if built from components that have been retired in upgrades, and allow greater flexibility by putting full control of the software driving the device in the hands of the administrator. This includes full access to and configurability of a wide array of security protocols and encryption standards, making it possible to create a console server that is more secure. However, this solution may have a higher TCO, less reliability and higher rack-space requirements, since most industrial console servers have the physical dimension of one rack unit (1U), whereas a desktop computer with full-size PCI cards requires at least 3Us, making the home-grown solution more costly in the case of a co-located infrastructure.

An alternative approach to a console server used in some cluster setups is to null-modem wire and daisy-chain consoles to otherwise unused serial ports on nodes with some other primary function.

See also

External links


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Console Server — Ein Konsolenserver (Englisch: Console Server) ist eine Fernwartungskomponente und dient zum Management von Rechnernetzknoten, die eher im Rechenzentrum anzutreffen sind, wie (Unix )Server, Router, Switches, Firewalls, Telefonanlagen, USVs. Die… …   Deutsch Wikipedia

  • Server-Console — Ein Konsolenserver (Englisch: Console Server) ist eine Fernwartungskomponente und dient zum Management von Rechnernetzknoten, die eher im Rechenzentrum anzutreffen sind, wie (Unix )Server, Router, Switches, Firewalls, Telefonanlagen, USVs. Die… …   Deutsch Wikipedia

  • Console Classix — Inc. Type Private Industry Rental Founded 2000 Headquarters South Carolina …   Wikipedia

  • Server (computing) — For other uses, see Server (disambiguation). Servers in a data center. Several servers are mounted on a rack and connected to a display …   Wikipedia

  • Server Core — Windows Server 2008 Datei:Logo Microsoft Windows Server 2008.svg Entwickler Microsoft Version Build 6001 (27. Februar 2008) Abstammung …   Deutsch Wikipedia

  • Server appliance — Snap Server 650 A server appliance is a computer appliance that works as a server. It is designed so that the end user does not need to understand the details of the operating system or the commands associated with it. Server appliances have… …   Wikipedia

  • console —    Sometimes abbreviated cons. The monitor and keyboard from which the server or host computer activity can be monitored.    Certain operating system commands and utilities must be executed from the console device; they will not operate from a… …   Dictionary of networking

  • Server Interface Pod — A Server Interface Pod is a proprietary hardware unit developed by Dell and Avocent. It sends keyboard, video, and mouse signals over Category 5 cables, greatly decreasing the workload of managing normally bulky and expensive KVM cables. One side …   Wikipedia

  • Terminal server — A terminal server is a specialized computer which aggregates multiple communication channels together. Because these channels are bidirectional, two models emerge: Multiple entities connecting to a single resource, and a single entity connecting… …   Wikipedia

  • System console — Knoppix system console showing the boot process The system console, root console or simply console is the text entry and display device for system administration messages, particularly those from the BIOS or boot loader, the kernel, from the init …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.