1
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The quality of service and guide is a really good guide to use for both study as well as for real world

2
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applications.

3
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It has, as an example, recommendations for classification and marketing.

4
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So as an example, voice traffic should use an IP precedence of five a per hop behaviour or FB, which

5
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is similar in concept to DHCP of F and DHCP of 46 a per hop behaviour essentially is a class.

6
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So what class of traffic will the traffic be put into and how will it be treated on a per hop behaviour?

7
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In other words, by each node in a network, how will your routers and switches treat the traffic?

8
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The physical marking would be 46, so that's the DHCP.

9
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And at layer two, your costs in your editor, the one Q header would be set to five and the MPLS experimental

10
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bits will be set to five as well.

11
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Call signalling.

12
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So a protocol such as CIP or HDD three may use an IP precedence of three per hop behaviour would be

13
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either a F 31 or KES three and the DHCP would be either 26 or 24.

14
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That's because there are differences in the way that phones mark traffic depending on how old they are.

15
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Bulk data, as an example, would have an IP precedence of one per hop behavior of AF 11, DCP of ten

16
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and a cost or experimental value of one.

17
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There are different ways to create classes depending on how close you are to the edge of the network.

18
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If you're at the edge of the network, in other words.

19
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You write here where your pieces and phones are connecting to the network.

20
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You may use multiple classes such as the quality of service baseline model, but in a lot of cases as

21
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you get closer and closer to the core.

22
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So in a core MPLS network as an example, they'll end up only having four or five classes.

23
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They will aggregate traffic classes into fewer classes as you get closer to the core of the network.

