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It the second we're going to take over to the quality of service less of the basics of the.
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Curious is industry wide set of standards and mechanisms for ensuring high quality performance for critical
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applications.
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Q As has the ability to provide different prices for different applications users or data flows or to
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guarantee a certain level of performance to data flow.
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Some traffic flows are important for the companies and needs to be prioritized.
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If the benefit demand exceeds the available amount terrific congestions killers and may result with
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the loss or delay of the critical data we can manage core network characteristics by Cure's and they
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are bandwidth which is the rate at which traffic is carried by the network latency which is the delay
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in data transmission from source the destination jitter which use the word creation in latency and reliability
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which is the person page of packet's discarded by air rather let's go ahead with the terrific types
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worse traffic is sensitive for delays and drop's and there is no real transmission.
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If the packet is lost because worst traffic is usually the best worst traffic is also smooched which
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means Flo's at the.
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And does not burst and Beland which means it is not greedy for lots of bandwidth fairly low per call.
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Let's go over the air traffic radio traffic is sensitive for delays drops and there is no real transmission.
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If the packet is lost because it is UDP based We are traffic is bursty which means part of picture moves
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with the Istalif on screen cause of keyframes and greedy which means more Berit you define better the
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picture quality is little traffic is sensitive for delays and drop's and may be small to bursty or many
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more greedy that.
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Effect is TZP based and can be transmitted instead of through oping traffic rudders and switch to Perkasie
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into an output queue and all new packets go through the queuing system.
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The mail for curing algorithms are fearful that if you see either of you or if you and the et al Q frivol
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is the first in first out the traffic reports form the interface as it arrives and there is no traffic
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points in Q4 as you can see here we have the red Packards and we have the great packet and are the workspace
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in here and the word Pickle's is coming for to the DeWyze and it is also leaving for us from the U.S.
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Forest in first out.
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Let's go out to Darby with you.
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Midge's mean Winterfield puring WFIU schedules Internet traffic to the front of the queue to reduce
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response response time and issues the remaining bandwidth.
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But when high bandwidth flows lets go with me declasse best.
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Wait wait wait.
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Q AInc.
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CB That is to extend the standard WFIU functionality to provide support for user defined traffic classes.
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A queue is reserved for each class and traffic belonging to a class is direct to the queue for that
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class.
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Let's grab the L-L Q LTE low latency queuing brings street priority queuing to the class base where
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we're queued.
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A low key ellos DeLay says through that such as Moyes to be given preferential treatment over others
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it by letting them do that to me they queued and then send first let's go ahead with the curus mechanisms
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Cure's technologies that are used to provide improved network service to the applications at the edge
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of the network and they are our best effort.
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Integrated services and the differentiated services Indes of a technology network does not bode any
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guarantees that data is delivered.
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Users Opt-In unspecified were idled betrayed and they are over words and depending on the current traffic
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loads Let's go ahead with the integrated services integrated services poor.
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A way to deal with the cures that real time applications Richar by explicitly managing network resources
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to provide cures to specific user Paykel streams and integrate health services.
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Use the resource research issue.
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Port of call R.S.V.P. to the signal the cueist needs of an application traffic along the way says you
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and to pass through the network which squares with differentiated services differentiated services are
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an architecture that space was as simple scalable and corkscrewing macaronis for classifying and managing
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network traffic and poor wording to us packet's class can be marked directly in the packet.
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And because of that there is no need for our SBP this technology ECU's better cures Killaloe the world
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is so poor at titre cures mechanism for real time traffic cures technology referred to the set of tools
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and techniques to manage network resources and the tools tools.
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Cl. market pools.
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Congestion avoidance tools and congestion management tools in classification are marking through if
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it is analyzed to discover that which class it belongs to and pickets our marks or after the discovery
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process classification of the traffic is made via a sales or class maps marking.
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There were terrific ellos to set or modified the attributes for a specific class of traffic lately or
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later to Lesko never too late to marking live to marking is implemented where Terebinth poor to quote
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Point Field which identifies class of service markings in TCI field of internet header is France are
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marked with eight levels of Porterville is as you can see anywhere and for example if you mark it in
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a frame with 5 that means that Savoy's through a very if you marked with three.
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That means there's a call signal.
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If you mark with one that moves a million Pirtle data and for example if you mark with zero that means
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that the best effort data.
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And let's go over to the trademarking layer trademarking is implemented y 8 bit type also was field
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or type of class field for I-26 in IP header inducers model Pecorella is marked using divs so of to
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point B as c p bits which are the six methods.
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For example if you are marking the packet with Sellon that means it's the network traffic.
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If you're Mark Perker with two flies that means that security critical packet.
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Or as you can see on the table the other Merkin types too unearthly were going to take a little traffic
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shaping in Paul wise seer troughing Poisson means when the traffic rate reaches reconfigured maximum
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rate excess traffic is drop to or impact and traffic shaping retains the excess packets in a queue and
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then schedules the exits for later transmission over increments of time.
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