H3C Technologies H3C Intelligent Management Center - Manual (Page 126)

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10 Acronyms and terms
ACL—Acronym for Access Control List, a set of custom rules that can be applied to network services or
hardware devices to control ports and network processes. QoSM uses IMC's ACL Management function
to determine match rules for network traffic classification.
AF—Acronym for Assured Forwarding, a network traffic behavior that provides assurance of delivery as
long as traffic does not exceed the subscribed rate. AF is one category of behavior settings that you can
specify for traffic classes in QoS. Assured Forwarding is detailed in the IETF's RFC 2597 and RFC 3260
specifications.
BE—Acronym for Best Effort, a network traffic behavior that effectively treats all inbound and outbound
packets equally (that is, no quality of service is applied). In QoSM, BE is a behavior that you can apply
to lower priority traffic.
Behavior—In QoSM, a set of parameters that collectively can be applied to a network service type (voice,
video, etc.) to optimize outbound traffic for your business.
BitTorrent—A peer-to-peer network architecture, developed by the company BitTorrent, for distributing
large amounts of data over the Internet. See also Peer-to-Peer.
Call Signaling—A layer of a network protocol standard for delivering VoIP (voice data) packets over a
network.
CAR—Acronym for Committed Access Rate, a feature in routers that limits the input or output transmission
rate on an interface based on certain matching criteria, such as incoming interface, IP precedence, QoS
group, or IP access list criteria. Routers that support CAR can be configured with certain transmit, drop,
set precedence, or set QoS group settings when traffic conforms to or exceeds the rate limit. QoSM
enables you to specify CAR as part of a deploy task that can be deployed to multiple devices supporting
a particular network service or set of services.
CBQ—Acronym for Class-Based Queuing, a network traffic management algorithm built into many
routers, allowing administrators to classify and prioritize traffic in a multilevel hierarchy based on
business requirements. In QoSM, the classifiers and behaviors enable administrators to implement CBQ
for their organizations.
CBS—Acronym for Committed Burst Size, a congestion control setting typically used in wide-area
networks connecting multiple local-area networks. A CBS specifies the maximum number of packets
transmittable during a specified interval.
CIR—Acronym for Committed Information Rate, the average rate (bits per second) at which the network
guarantees to transfer information units over a specific measurement interval. This interval is the quotient
of committed burst size divided by committed information rate (CBS/CIR).
Classifier—In QoSM, a set of criteria for identifying and categorizing particular types of network traffic,
for example, voice data or video. By classifying data types in QoSM, you can then specify network
behaviors relative to those data types to help optimize your business processes.
Deploy Task—In QoSM, an encapsulated QoS policy gathered from one device, which you can apply
(deploy) to other devices on your network. With deploy tasks, you can very quickly deploy quality of
service parameters to multiple devices to prioritize the different network services and optimize network
traffic flow according to your business priorities.
DiffServ—Short for Differentiated Services, a networking architecture for classifying and managing
network traffic and providing quality of service on IP networks.