Building Resilient IP Networks by Kok-Keong Lee

By Kok-Keong Lee

The sensible consultant to development resilient and hugely on hand IP networks 

  • Learn from an all-in-one creation to new positive aspects and advancements in construction a resilient IP network
  • Enable your company to satisfy inner service-level agreements (SLAs) for mission-critical resources
  • Understand how a resilient IP community can assist in supplying mission-critical details comparable to video and voice services
  • Work with configuration examples which are according to real-world matters and buyer requirements
  • Get counsel and most sensible practices from box team of workers who've labored on the various greatest networks with stringent uptime requisites and SLAs

More businesses are construction networks with the purpose of utilizing them to behavior enterprise. as the community has develop into this type of strategic company software, its availability is of maximum significance to businesses and their provider companies. The demanding situations for the pros chargeable for those networks contain making sure that the community is still up forever, conserving abreast of the most recent applied sciences that aid keep uptime, and reacting to ever-increasing denial-of-service (DoS) attacks.


Building Resilient IP Networks is helping you meet these demanding situations. This useful consultant to development hugely on hand IP networks captures the essence of applied sciences that give a contribution to the uptime of networks. You achieve a transparent knowing of the way to accomplish community availability by utilizing instruments, layout technique, and Cisco IOS® Software.


With Building Resilient IP Networks, you study misconceptions approximately five-nines availability and discover ways to concentration your consciousness at the genuine concerns: appreciating the constraints of the protocols, knowing what has been performed to enhance them, and conserving abreast of these adjustments. construction Resilient IP Networks highlights the significance of getting a modular method of development an IP community and, most vital, illustrates how a modular layout contributes to a resilient community. You learn the way an IP community will be damaged all the way down to a number of modules and the way those modules interconnect with each other. then you definately discover new community resiliency positive aspects which were constructed lately, categorised with appreciate to the layout modules.


Building Resilient IP Networks is correct to either firm and repair supplier shoppers of all sizes. whether the community connects to the web, fortifying IP networks for max uptime and prevention of assaults is essential for anyone’s business.


This ebook is a part of the Networking expertise sequence from Cisco Press®, which deals networking pros worthy info for developing effective networks, figuring out new applied sciences, and construction profitable careers.


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Example text

If you were to scrutinize the standard, any problems that affect the service of 64 ports or fewer do not count toward system downtime. Whenever a line card failure occurs, the PBX vendor usually offers a 4-hour response time to replace the faulty card. Remember that to achieve five-nines uptime, you can afford only 5 minutes and 15 seconds of service interruption. So does that mean that the system described in the preceding paragraphs is not five-nines certified? The answer is that PBX is still a five-nines system.

It is about knowing what problems to address and how to deal with them appropriately. In addition, unseen problems might occur, and having a plan to handle these problems is crucial to achieving the overall result. A network manager should draw up a strategy that includes the following: 舦 Designing a network for high availability 舦 Establishing continuous fault detection and measurement of network availability 舦 Making full use of scheduled downtime 舦 Instituting a disciplined approach to network operation and processes Designing a Network for High Availability Designing a network for high availability takes more than just redundant power supplies for the equipment and lots of redundant links between devices.

Some network managers might even wonder whether it is technically possible to operate an IP network with minimal failures. After all, most network managers have changed from one design to another only to find out that they are still dealing with that dreadful midnight phone call. A few key networking developments address these concerns. This chapter discusses some of these developments, including the dependence on the Internet, use of next-generation applications such as Voice over IP (VoIP), adoption of Multiprotocol Label Switching (MPLS), and changes in IP transport systems.

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