Committed information rate

Committed information rate or CIR in a Frame relay network is the average bandwidth for a virtual circuit guaranteed by an ISP to work under normal conditions. At any given time, the bandwidth should not fall below this committed figure. The bandwidth is usually expressed in kilobits per second (kbit/s).

Above the CIR, an allowance of burstable bandwidth is often given, known as the Excess Information Rate (EIR) or Peak Information Rate (PIR). The provider guarantees that the connection will always support the CIR rate, and sometimes the EIR rate provided that there is adequate bandwidth. The CIR plus excess burst rate (EIR) is either equal to or less than the speed of the access port into the network. Frame relay carriers define and package CIRs differently, and CIRs are adjusted with experience.

CIR is derived from the term Committed Data Rate or CDR, and is used in similar fashion, but refers also to voice and non-data packets and not only to data packets as in CDR.^{[citation needed]}

See also

• Frame relay
• Virtual circuit
• Burstable billing
• Information rate
• Throughput
• Digital bandwidth

This computer networking article is a stub. You can help Wikipedia by expanding it.v · Categories: Network performance Computer network analysis Computer network stubs Wikimedia Foundation. 2010. Игры ⚽ Поможем сделать НИР Committed (comic strip) Committed step Look at other dictionaries: Committed Information Rate — or CIR in a Frame relay network is the average bandwidth for a virtual circuit guaranteed by an ISP to work under normal conditions. At any given time the bandwidth should not fall below this committed figure. It is usually expressed in kilobits… …   Wikipedia committed information rate —    (CIR)    The guaranteed theshold that will be maintained by the frame relay service provider when data is being sent over the carrier s network …   IT glossary of terms, acronyms and abbreviations Peak information rate — is a burstable rate set on routers and/or switches that allows throughput overhead. Related to Committed Information Rate which is a committed rate speed guaranteed/capped. For example, a CIR of 10 Mbit/s PIR of 12 Mbit/s allows you access to 10… …   Wikipedia Peak Information Rate — The Peak Information Rate is a Burstable Rate Set on Routers and/or Switches that allow Throughput Overhead. Related to Committed Information Rate which is a Committed Rate Speed Guaranteed/Capped. Ex: CIR of 10 Mbit/s PIR of 12 Mbit/s. Allowing… …   Wikipedia European Public Hearing on Crimes Committed by Totalitarian Regimes — Crimes Committed by Totalitarian Regimes are reports and proceedings of the European public hearing organised by the Slovenian Presidency [1] of the Council of the European Union (January–June 2008) and the European Commission.[2] The Hearing was …   Wikipedia Indian Institutes of Information Technology — IIIT is the generic name for several Institutes of Information Technology in India, each a mini university in itself. Many of these institutions have been subsequently renamed to better identify their affiliations and goals. The IIITs were… …   Wikipedia CIR — Committed Information Rate (Computing » Networking) Committed Information Rate (Computing » Telecom) Committed Information Rate (Computing » General) Commissioner Of Internal Revenue (Governmental » US Government) ** Cosmetic Ingredient Review… …   Abbreviations dictionary CIR — • Committed Information Rate (u.a. ATM) • Cargo Integration Review NASA • Cairo, IL, USA internationale Flughafen Kennung • Cir Circinus Dividers Zirkel Sternbild in der südl. Halbkugel Astronomie …   Acronyms Frame relay — In the context of computer networking, frame relay consists of an efficient data transmission technique used to send digital information. It is a message forwarding relay race like system in which data packets, called frames, are passed from one… …   Wikipedia Frame relay — У этого термина существуют и другие значения, см. Fr. Frame relay (англ. «ретрансляция кадров», FR)  протокол канального уровня сетевой модели OSI. Служба коммутации пакетов Frame Relay в настоящее время широко распространена во всём… …   Википедия 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”