Everything about Generic cell rate algorithm
Network scheduling algorithm used in ATM
The generic cell rate algorithm (GCRA) is a leaky bucket-type scheduling algorithm for the network scheduler that is used in Asynchronous Transfer Mode (ATM) networks. It is used to measure the timing of cells on virtual channels (VCs) and or Virtual Paths (VPs) against bandwidth and jitter limits contained in a traffic contract for the VC or VP to which the cells belong. Cells that do not conform to the limits given by the traffic contract may then be re-timed (delayed) in traffic shaping, or may be dropped (discarded) or reduced in priority (demoted) in traffic policing. Nonconforming cells that are reduced in priority may then be dropped, in preference to higher priority cells, by downstream components in the network that are experiencing congestion. Alternatively they may reach their destination if there is enough capacity for them, despite them being excess cells as far as the contract is concerned: see priority control. Wikipedia →
🧠Start here: a 6-step reading path
- Read the overview: Generic cell rate algorithmA 5-minute orientation
- Pick up a classic book: Data Communications and NetworkingThe most-reprinted book on the subject
- Go sideways: Leaky bucketA closely related topic
- Go sideways: UPC and NPCA closely related topic
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đź“š Books worth reading
Data Communications and NetworkingBehrouz A. Forouzan, Catherine Ann Coombs · 2000
Computational Thinking for the Modern Problem SolverKenny A. Hunt, David D. Riley · 2014
Practical Electronics for InventorsPaul Scherz · 2000
Emerging Technologies for Information Systems, Computing, and ManagementW. Eric Wong · 2013
Numerical Methods for Differential Equations, Optimization, and Technological ProblemsSergey Repin · 2012
Intelligent Technologies and Engineering SystemsJengnan Juang · 2013
Adaptive and Natural Computing AlgorithmsMarco Tomassini · 2013
Recent Trends in Applied Artificial IntelligenceMoonis Ali · 2013
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đź”— Related topics
- Leaky bucket The leaky bucket is an algorithm based on an analogy of how a bucket with a constant leak will overflow if either the average rate at which water is poured…
- UPC and NPC Usage Parameter Control (UPC) and Network Parameter Control (NPC) are functions that may be performed in a computer network. UPC may be performed at the…
- Asynchronous Transfer Mode Asynchronous Transfer Mode (ATM) is a telecommunications standard defined by the American National Standards Institute and International Telecommunication…
- Traffic policing (communications) In communications, traffic policing is the process of monitoring network traffic for compliance with a traffic contract and taking steps to enforce that…
- Token bucket The token bucket is an algorithm used in packet-switched and telecommunications networks. It can be used to check that data transmissions, in the form…
- Traffic contract If a network service (or application) wishes to use a broadband network (an ATM network in particular) to transport a particular kind of traffic, it must…
- Traffic shaping Traffic shaping is a bandwidth management technique used on computer networks which delays some or all datagrams to bring them into compliance with a desired…
- ATM adaptation layer The use of Asynchronous Transfer Mode (ATM) technology and services creates the need for an adaptation layer in order to support information transfer protocols…