Queuing Shaping and Policing
Queing
If a sequential server is busy processing a request when a subsequent request carries the server cannot place incoming request in queue multiple request can arrives in a rapid successive to hand burst typical queue size are extremely small
Shaping
To consist queuing and forwarding a router that offer QOS usually implements a mechanism to handle packet burst ,Here each burst is smoothed . To smooth burst a router temporary queues incoming datagram then sends to them steady rate
Scheduling
A router needs to assign prior to out going traffic and choose which packet to send a given time
Four factor affecting scheduling
Policing Mechanism protect other flows to insure that each flows receives its fair share
Q.IV. (b) What is meant by the terms 'shaping' and 'policing'? (7)[B. Tech Degree VII Semester Special Supplementary Examination June 2012 CS/IT 703 ADVANCED COMPUTER NETWORKS (2006 Scheme)]
Queing
If a sequential server is busy processing a request when a subsequent request carries the server cannot place incoming request in queue multiple request can arrives in a rapid successive to hand burst typical queue size are extremely small
Shaping
To consist queuing and forwarding a router that offer QOS usually implements a mechanism to handle packet burst ,Here each burst is smoothed . To smooth burst a router temporary queues incoming datagram then sends to them steady rate
Scheduling
A router needs to assign prior to out going traffic and choose which packet to send a given time
Four factor affecting scheduling
- Fairness :- bandwidth fall under assigned to flow
- Delay :- Packet should not delay excessively
- Adaptability :- If a given flow does not have packet to send scheduler should divide extra bandwidth
- Computational overhead :- Scheduler must not in care much computational overhead
Policing Mechanism protect other flows to insure that each flows receives its fair share
Q.IV. (b) What is meant by the terms 'shaping' and 'policing'? (7)[B. Tech Degree VII Semester Special Supplementary Examination June 2012 CS/IT 703 ADVANCED COMPUTER NETWORKS (2006 Scheme)]
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