Deploying Qo: S for Cisco IP and Next Generation Networks. by Vinod Joseph and Brett Chapman (Auth.)

By Vinod Joseph and Brett Chapman (Auth.)

Deploying QoS for IP subsequent iteration Networks: The Definitive Guide presents community architects and planners with perception into some of the features that force QoS deployment for a few of the community varieties. It serves as a unmarried resource of reference for companies that plan to installation a QoS framework for voice, video, mobility and information functions making a converged infrastructure. It extra offers special layout and implementation information for numerous provider deployments around the a variety of Cisco systems comparable to the CRS-1, 12000, 7600 & 7200 sequence routers which are extensively deployed in so much service Networks.

The booklet covers architectural and implementation particular details plus options for the majority the preferred line playing cards around the a variety of structures favourite available in the market. It additionally addresses QoS structure and deployment at the Cisco CRS-1 platform and is taken into account as a different promoting aspect of this e-book.

In brief the books function an ''On the task Manual'' which could even be used as a learn advisor for Cisco expert certification courses (CCNA, CCIP, CCIE)

This booklet will contains distinctive representation and configurations. moreover, it offers distinctive case experiences besides platform particular assessments and dimension effects. A hyperlink to an in depth educational on QoS metrics and linked try effects could be to be had on the book's better half web site so as to make sure that the reader is ready to comprehend QoS performance from a deployment standpoint.

  • Covers the necessities and options in deploying QoS for voice, video, IPTV, mobility and knowledge site visitors periods (Quad-play networks), saving the reader time in trying to find particular QoS details, given the abundance of Cisco systems and line cards.
  • Presents real-life deployments via distinctive case reports, permitting the reader to use an identical strategies to events within the paintings place.
  • Provides QoS structure and implementation information on Cisco CRS-1, 12000, 7600, and 7200 routing structures utilizing Cisco IOS/IOS-XR software program, helping the reader in utilizing those units and getting ready for Cisco expert certification.

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Additional info for Deploying Qo: S for Cisco IP and Next Generation Networks. The Definitive Guide

Sample text

13 Modular QoS CLI As its name suggests, the Modular QoS CLI (MQC) is used to enable QoS functionality. The primary goal of the MQC is to provide a platform-independent interface for configuring QoS on Cisco platforms. To attain platform independence, the commands within the MQC define QoS functionality and behavior independent of the implementation or algorithm (that is, platform- or implementation-specific details are not exposed in the CLI). To this end, the MQC effectively defines a QoS behavioral model at an abstract level.

3: IP Precedence vs. 4 IntServ Strengths and Shortcomings The IETF defined models, IntServ and DiffServ, are simply two ways of considering the fundamental problem of providing QoS for a given IP packet. The IntServ model relies on RSVP to signal and reserve the desired QoS for each flow in the network. A flow is defined as an individual, unidirectional data stream between two applications and is uniquely identified by the five tuples (source IP address, source port number, destination IP address, destination port number, and the Transport Protocol).

The following rules apply to IP packets marked with DSCP values: The DSCP field is 6 bits wide. DS-compliant nodes in the network choose the preferential treatment to the IP packet by matching against the entire 6-bit DSCP field. The value of the ECN field is completely ignored. Packets with an unrecognized code point are treated as though they were marked for default behavior (explained in detail in the following sections). l l l Once the traffic has been identified for their respective classes, specific forwarding treatments, formally called per-hop behavior (PHB), are applied on each network element, providing the packet the appropriate delay-bound, jitter-bound, bandwidth, and so on.

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