Medianet Reference Guide - Cisco

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Cisco Network Analysis Module Chapter 6 Medianet Management and Visibility Design Considerations Figure 6-10 Diffserv Profile Based on the Cisco Enterprise 12-Class QoS Model As can be seen, each of the DSCP markings corresponds to one of the 12 QoS classes. Because assured forwarding (AF) traffic may be marked down (for example from AFx1 to AFx2 or AFx3) within service provider Multiprotocol Label Switching (MPLS) networks, these have been added to the diffserv aggregation profile as separate aggregation groups in the example above. This can provide additional value in that you may be able determine whether traffic within the particular assured forwarding traffic classes is being marked down because the traffic rates are outside the contracted rates of the service 6-18 Medianet Reference Guide OL-22201-01
Chapter 6 Medianet Management and Visibility Design Considerations Cisco Network Analysis Module provider network. The downside to this approach, however, is that you may have to manually combine the monitoring and reporting statistics from the separate aggregation groups to gain a view of all the traffic within a single assured forwarding (AFx1, AFx2, and AFx3) class. Alternatively, the AFx1, AFx2, and AFx3 traffic can be placed into a single aggregation group (for instance AF41, AF42, and AF42 all placed into a multimedia-conferencing group). This makes it easier to view the overall amount of traffic within a particular AF class, but at the loss of the information regarding if or how much of the traffic was marked down. After the diffserv aggregation profile has been created, it must be applied to monitor each data source in which it is desired to see traffic statistics, application statistics, and/or host statistics; based on the aggregation groupings defined within in the profile. An example of this is shown in Figure 6-11, in which the 12-Class-QoS diffserv profile has been applied to the NDE source corresponding to a WAN edge router. Figure 6-11 Application of the Diffserv Aggregation Profile to an NDE Source When applied, the traffic, application, and/or IP host statistics can be viewed as current rates or cumulative data. Figure 6-12 shows an example of the output from the traffic statistics shown as current rates. OL-22201-01 Medianet Reference Guide 6-19
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About the Authors Solution Authors
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Contents Application Intelligence a
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Contents The Globalization of the W
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Contents NetFlow Collector Consider
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Contents viii Medianet Reference Gu
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Business Drivers for Media Applicat
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Business Drivers for Media Applicat
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Challenges of Medianets Chapter 1 M
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Solution Chapter 1 Medianet Archite
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Conclusions Chapter 1 Medianet Arch
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Related Documents Chapter 1 Mediane
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Related Documents Chapter 1 Mediane
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Measuring Bandwidth Chapter 2 Media
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Packet Flow Malleability Chapter 2
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Shapers Chapter 2 Medianet Bandwidt
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Converged Video Chapter 2 Medianet
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EtherChannel Chapter 2 Medianet Ban
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Summary Chapter 2 Medianet Bandwidt
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Network Availability Chapter 3 Medi
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Summary Chapter 6 Medianet Manageme
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Medianet Reference Guide - Cisco

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