Routers

= Routers = toc

Definition
A router is a device that moves data packets within networks. A router is typically considered to be the device that connects a computer or network of computers to the ISP's (Internet Service Provider) network or to other networks. By its most basic definition, a router can simply be a computer with internet access which is connected to a second computer and allows it to have internet access. A modem is also a type of router, directing information from an ISP to a computer. Routers work by using headers (part of the data packet containing transparent information) and forwarding tables to direct the data packets, communicating using the various protocols (ICMP, HTML, etc.).

Image Source: All About Broadband/ICS Routers, HowStuffWorks.com

Routers can be hard-wired or wireless, and there are pros and cons to both types. The set-up process for a wireless router is easier (not having to physically connect the router to all computers) and allows for easier mobility of the computers, but a wireless system has more security risks and requires different levels of protection than a wired router. Properly installed firewalls can greatly improve the security of a wireless network.

Resources
As individual information professionals will have a widely varied range of knowledge and experience with the use of routers in libraries and information centers, the resources below are included to address different users' needs/interests.

For a basic definition of routers and links to the explanations of other terms that are necessary to understand routers, see Webopedia.

For interesting animated explanations of how routers work to connect networks and the internet, see the videos at www.warriorsofthe.net.

For more current and in-depth information on routers, PCWorld (search for "routers") includes recent news articles on routers, downloads related to routers, reviews of new routers (including pricing), and videos, how-to guides and tips on the set-up, use and maintenance of routers.

For an inspiring story of one librarian's quest to provide more access points for her student patrons, and to see how she saved over $6000 in doing so, please read //A Network So Crazy, It Just Might Work//, by Elizabeth Vidrine (see reference below).

**References**
Beal, V. (2009, August 28). All about broadband/ICS routers. Webopedia. Retrieved from http://www.webopedia.com/DidYouKnow/Hardware_Software/2005/router.asp

Warriors of the Net. Retrieved from http://www.warriorsofthe.net

PCWorld. Retrieved from http://www.pcworld.com

Vidrine, E. (2005) A network so crazy, it just might work. //American Libraries// //36//.1, 62-3. Retrieved from http://vnweb.hwwilsonweb.com.pallas2.tcl.sc.edu/hww/jumpstart.jhtml? recid=0bc05f7a67b1790ef2dd763d541a65647fd12e2620ca67ab3e7d495657d72c1b44bd001295158bc8&fmt=H