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Chapter 24.
Advanced Router Options
Although Linux is generally considered a
general-purpose OS, it's increasingly being used in various specialized
applications, such as palmtop computers (
One that does not (or at least need not) is
using Linux as a router OS. Routers are unglamorous devices that aren't much in
the public eye, but they serve the vital function of linking together the
computers that form the Internet. Routers range from small and simple devices
sold to individuals and small businesses that tie a handful of computers to the
Internet via a broadband connection to devices that cost thousands of dollars
and that link together Internet backbones. Linux can serve as a low-end router
with little fuss, but if you want it to handle more than a few dozen computers,
you may want to investigate Linux's advanced router options. These allow the OS
to use various techniques to prioritize packet delivery and to communicate with
other routers.NOTE
align=left border=0> If you want to use Linux as a broadband
router that performs network address translation (NAT), consult
Configuring iptables.
Basic router configuration in Linux is
relatively straightforward, but the advanced router options can be very
intricate. Thus, this chapter can present only an overview of the issues and
tools involved. For more information, you should consult the documentation for
specific tools, such as Malkin's RIP: An Intra-Domain
Routing Protocol (Addison Wesley, 2000); or a general routing book such
as LeBlanc et al.'s Linux Routing (New Riders,
2002).
