Static routing: Difference between revisions

Revision as of 21:18, 25 January 2021

Revision as of 04:41, 4 September 2021

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'''Static routing''' is a form of [[routing]] that occurs when a router uses a manually-configured routing entry, rather than information from dynamic routing traffic.<ref>[http://www.redbooks.ibm.com/redbooks/pdfs/gg243376.pdf TCP/IP Tutorial and Technical Overview (IBM RedBooks Series)]</ref> In many cases, static routes are manually configured by a [[network administrator]] by adding in entries into a [[routing table]], though this may not always be the case.<ref name=SLA>http://www.cisco.com/c/en/us/td/docs/ios/dial/configuration/guide/12_2sr/dia_12_2sr_book/dia_rel_stc_rtg_bckup.html</ref> Unlike [[dynamic routing]], static routes are fixed and do not change if the network is changed or reconfigured. Static routing and [[dynamic routing]] are not mutually exclusive. Both dynamic routing and static routing are usually used on a router to maximise routing efficiency and to provide backups in the event thatcase dynamic routing information fails to be exchanged. Static routing can also be used in [[stub network]]s, or to provide a [[default route|gateway of last resort]].

== Uses ==

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* Static routing can be used to define an exit point from a router when no other routes are available or necessary. This is called a [[default route]].

* Static routing can be used for small networks that require only one or two routes. This is often more efficient since a link is not being wasted by exchanging dynamic routing information.

* Static routing is often used as a complement to dynamic routing to provide a failsafe backup in the event thatif a dynamic route is unavailable.

* Static routing is often used to help transfer routing information from one routing protocol to another (routing redistribution).