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These are the user uploaded subtitles that are being translated: 1 00:00:00,780 --> 00:00:07,290 It the second we're going to take over to the quality of service less of the basics of the. 2 00:00:08,850 --> 00:00:17,100 Curious is industry wide set of standards and mechanisms for ensuring high quality performance for critical 3 00:00:17,100 --> 00:00:18,530 applications. 4 00:00:18,540 --> 00:00:26,610 Q As has the ability to provide different prices for different applications users or data flows or to 5 00:00:26,610 --> 00:00:31,210 guarantee a certain level of performance to data flow. 6 00:00:32,530 --> 00:00:38,360 Some traffic flows are important for the companies and needs to be prioritized. 7 00:00:38,410 --> 00:00:46,300 If the benefit demand exceeds the available amount terrific congestions killers and may result with 8 00:00:46,360 --> 00:00:55,270 the loss or delay of the critical data we can manage core network characteristics by Cure's and they 9 00:00:55,270 --> 00:01:02,710 are bandwidth which is the rate at which traffic is carried by the network latency which is the delay 10 00:01:02,710 --> 00:01:10,840 in data transmission from source the destination jitter which use the word creation in latency and reliability 11 00:01:10,840 --> 00:01:19,060 which is the person page of packet's discarded by air rather let's go ahead with the terrific types 12 00:01:19,410 --> 00:01:25,760 worse traffic is sensitive for delays and drop's and there is no real transmission. 13 00:01:25,810 --> 00:01:33,790 If the packet is lost because worst traffic is usually the best worst traffic is also smooched which 14 00:01:33,790 --> 00:01:35,790 means Flo's at the. 15 00:01:35,860 --> 00:01:45,300 And does not burst and Beland which means it is not greedy for lots of bandwidth fairly low per call. 16 00:01:45,700 --> 00:01:53,480 Let's go over the air traffic radio traffic is sensitive for delays drops and there is no real transmission. 17 00:01:53,530 --> 00:02:02,260 If the packet is lost because it is UDP based We are traffic is bursty which means part of picture moves 18 00:02:02,530 --> 00:02:11,020 with the Istalif on screen cause of keyframes and greedy which means more Berit you define better the 19 00:02:11,020 --> 00:02:22,500 picture quality is little traffic is sensitive for delays and drop's and may be small to bursty or many 20 00:02:22,500 --> 00:02:24,040 more greedy that. 21 00:02:24,140 --> 00:02:35,160 Effect is TZP based and can be transmitted instead of through oping traffic rudders and switch to Perkasie 22 00:02:35,170 --> 00:02:41,210 into an output queue and all new packets go through the queuing system. 23 00:02:41,210 --> 00:02:52,390 The mail for curing algorithms are fearful that if you see either of you or if you and the et al Q frivol 24 00:02:52,530 --> 00:03:01,410 is the first in first out the traffic reports form the interface as it arrives and there is no traffic 25 00:03:01,410 --> 00:03:12,480 points in Q4 as you can see here we have the red Packards and we have the great packet and are the workspace 26 00:03:12,610 --> 00:03:22,650 in here and the word Pickle's is coming for to the DeWyze and it is also leaving for us from the U.S. 27 00:03:22,710 --> 00:03:25,420 Forest in first out. 28 00:03:25,860 --> 00:03:28,230 Let's go out to Darby with you. 29 00:03:28,300 --> 00:03:37,140 Midge's mean Winterfield puring WFIU schedules Internet traffic to the front of the queue to reduce 30 00:03:37,140 --> 00:03:41,520 response response time and issues the remaining bandwidth. 31 00:03:41,550 --> 00:03:46,810 But when high bandwidth flows lets go with me declasse best. 32 00:03:46,850 --> 00:03:48,150 Wait wait wait. 33 00:03:48,230 --> 00:03:49,150 Q AInc. 34 00:03:49,320 --> 00:03:58,590 CB That is to extend the standard WFIU functionality to provide support for user defined traffic classes. 35 00:03:58,590 --> 00:04:06,630 A queue is reserved for each class and traffic belonging to a class is direct to the queue for that 36 00:04:06,630 --> 00:04:07,990 class. 37 00:04:08,250 --> 00:04:17,190 Let's grab the L-L Q LTE low latency queuing brings street priority queuing to the class base where 38 00:04:17,380 --> 00:04:18,710 we're queued. 39 00:04:18,970 --> 00:04:25,940 A low key ellos DeLay says through that such as Moyes to be given preferential treatment over others 40 00:04:26,130 --> 00:04:35,550 it by letting them do that to me they queued and then send first let's go ahead with the curus mechanisms 41 00:04:36,110 --> 00:04:42,570 Cure's technologies that are used to provide improved network service to the applications at the edge 42 00:04:42,630 --> 00:04:46,170 of the network and they are our best effort. 43 00:04:46,170 --> 00:04:54,480 Integrated services and the differentiated services Indes of a technology network does not bode any 44 00:04:54,480 --> 00:04:57,260 guarantees that data is delivered. 45 00:04:57,350 --> 00:05:04,380 Users Opt-In unspecified were idled betrayed and they are over words and depending on the current traffic 46 00:05:04,680 --> 00:05:11,380 loads Let's go ahead with the integrated services integrated services poor. 47 00:05:11,430 --> 00:05:19,520 A way to deal with the cures that real time applications Richar by explicitly managing network resources 48 00:05:19,520 --> 00:05:26,780 to provide cures to specific user Paykel streams and integrate health services. 49 00:05:26,780 --> 00:05:29,670 Use the resource research issue. 50 00:05:29,710 --> 00:05:37,560 Port of call R.S.V.P. to the signal the cueist needs of an application traffic along the way says you 51 00:05:37,730 --> 00:05:47,000 and to pass through the network which squares with differentiated services differentiated services are 52 00:05:47,060 --> 00:05:56,540 an architecture that space was as simple scalable and corkscrewing macaronis for classifying and managing 53 00:05:56,540 --> 00:06:03,090 network traffic and poor wording to us packet's class can be marked directly in the packet. 54 00:06:03,110 --> 00:06:12,860 And because of that there is no need for our SBP this technology ECU's better cures Killaloe the world 55 00:06:12,940 --> 00:06:23,600 is so poor at titre cures mechanism for real time traffic cures technology referred to the set of tools 56 00:06:23,630 --> 00:06:29,190 and techniques to manage network resources and the tools tools. 57 00:06:29,520 --> 00:06:32,040 Cl. market pools. 58 00:06:32,180 --> 00:06:41,380 Congestion avoidance tools and congestion management tools in classification are marking through if 59 00:06:41,410 --> 00:06:49,310 it is analyzed to discover that which class it belongs to and pickets our marks or after the discovery 60 00:06:49,310 --> 00:06:57,070 process classification of the traffic is made via a sales or class maps marking. 61 00:06:57,070 --> 00:07:05,450 There were terrific ellos to set or modified the attributes for a specific class of traffic lately or 62 00:07:05,500 --> 00:07:14,170 later to Lesko never too late to marking live to marking is implemented where Terebinth poor to quote 63 00:07:14,190 --> 00:07:23,340 Point Field which identifies class of service markings in TCI field of internet header is France are 64 00:07:23,340 --> 00:07:31,890 marked with eight levels of Porterville is as you can see anywhere and for example if you mark it in 65 00:07:31,890 --> 00:07:37,700 a frame with 5 that means that Savoy's through a very if you marked with three. 66 00:07:37,700 --> 00:07:39,770 That means there's a call signal. 67 00:07:39,900 --> 00:07:46,500 If you mark with one that moves a million Pirtle data and for example if you mark with zero that means 68 00:07:46,500 --> 00:07:49,420 that the best effort data. 69 00:07:49,920 --> 00:07:59,750 And let's go over to the trademarking layer trademarking is implemented y 8 bit type also was field 70 00:07:59,790 --> 00:08:10,370 or type of class field for I-26 in IP header inducers model Pecorella is marked using divs so of to 71 00:08:10,380 --> 00:08:16,770 point B as c p bits which are the six methods. 72 00:08:16,770 --> 00:08:23,700 For example if you are marking the packet with Sellon that means it's the network traffic. 73 00:08:23,760 --> 00:08:29,810 If you're Mark Perker with two flies that means that security critical packet. 74 00:08:29,850 --> 00:08:38,280 Or as you can see on the table the other Merkin types too unearthly were going to take a little traffic 75 00:08:38,290 --> 00:08:47,190 shaping in Paul wise seer troughing Poisson means when the traffic rate reaches reconfigured maximum 76 00:08:47,190 --> 00:08:57,870 rate excess traffic is drop to or impact and traffic shaping retains the excess packets in a queue and 77 00:08:57,870 --> 00:09:04,390 then schedules the exits for later transmission over increments of time. 9161

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