Fair Queuing (English "“fair incorporating"”) is a common technology, in order to avoid data back-up and/or overload in transmission components such as a routing.

The primary goal with the fair Queuing is the fair treatments of the sources of a transmission component. Therefore the procedure"” fair "“is also called.

Fair Queuing functions according to the following principle: On each outlet line of the transmission component its own queue is assigned to each data flow (and thus each source of the transmission component). The packages of the queues are taken and dispatched after the Round Robin procedure. In this way each source of the transmission component becomes on the same part of the overall bandwidth of the outlet line limits.

Disadvantages

A problem of fair Queuing is that those transmitters are preferred, which long packages send, since dispatching larger packages takes more time up. To be solved this problem can by an extension of the fair Queuings: "“Fair Queuing with byte by byte Round Robin"”.

A second problem is that fair Queuing does not consider the priority of data flows (of each source there is data flow). Some sources have a higher priority as other and/or some data flows to need a higher range than others. A solution for this problem is the extension of the fair Queuings to the Weighted fair Queuing.

See also

• Queuing techniques
• FIFO Queuing
• Priority Queuing
• Weighted fair Queuing

Articles in category "Fair Queuing"

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Related Websites

We found here 5 related websites.

• Cisco IOS Quality of Service Solutions Command Reference, Release ...
  To set the maximum number of packets in all queues combined for VIP-distributed weighted fair queueing (DWFQ), use the fair-queue aggregate-limit interface ...


• Class-Based Weighted Fair Queueing
  For information on WFQ, see the "Configuring Weighted Fair Queueing" ... Policy Map poH1 Weighted Fair Queueing Class class1 Bandwidth 937 (kbps) Max thresh ...


• Configuring Weighted Fair Queueing
  Class-Based Weighted Fair Queueing Configuration Task List. Defining Class Maps. Configuring Class Policy in the Policy Map ...


• Fair Queuing : Lecture 7
  This can be achieved by "weighted fair queuing" whre some users have higher ... Also to avoid per flow memory state we can use core steteless fair queuing. ...


• Weighted Fair Queuing
  Weighted Fair Queuing (WFQ) is a packet scheduling technique allowing guaranteed bandwidth services. The purpose of WFQ is to let several sessions share the ...