By Jean-Philippe Vasseur M.S. in Computer Science, Mario Pickavet, Piet Demeester

ISBN-10: 012715051X

ISBN-13: 9780127150512

Community restoration is the 1st publication to supply specific details on conserving and restoring verbal exchange networks, and it units a sky-high common for any that can keep on with. inside of, you are going to research particular innovations that paintings at each one layer of the networking hierarchy-including optical, SONET-SDH, IP, and MPLS-as good as multi-layer escalation innovations that provide the top point of security. The authors commence with an incisive creation to the problems that outline the sphere of community safety and recovery, and because the publication progresses they clarify every thing you want to find out about the suitable protocols, delivering theoretical analyses anyplace applicable. if you happen to paintings for a network-dependent association, huge or small, you need to hold community restoration nearby consistently. * exhibits you the way to enforce safety and restoration innovations that might retailer your company money and time. * records concepts for the optical, SONET-SDH, IP, and MPLS layers, in addition to multi-layer escalation recommendations. * indicates you ways to guage those concepts with regards to each other, so that you can increase an optimum community restoration layout. * offers examples and simulation effects. * Delves into the interior workings of suitable protocols and gives theoretical analyses anywhere this data contributes on your functional wisdom.

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Extra resources for Network Recovery: Protection and Restoration of Optical, SONET-SDH, IP, and MPLS

Example text

Protection Variants Between the different recovery mechanisms that are classified as protection schemes, a further distinction can be made, depending on the number of recovery entities that are protecting a given number of working entities [Man2]. 1þ1 Protection (Dedicated Protection) One dedicated protection path protects exactly one working segment and the normal traffic is permanently duplicated at the RHE on both the recovery path and the working path. At the RTE, the signal with highest quality is selected and sent to the destination.

Most operators have a long history of cable-cut recordings and know more or less how many cable cuts they can expect on average per year for their long-distance links. Typical MTBF values range between 50 and 200 days ([DeM03], [Wil01], [Bat02], [Jur98]) per 1000 km of cable. The time to repair the cable consists mainly of the amount of time it takes to determine and reach the cut location, because mending the cable is a relatively quick procedure. Usually, the repair team monitors the performance of the fibers before they are returned into operation.

Hospitals, police, and fire department): For safety reasons, this group should have communications services at all times. , accessibility of emergency services after an earthquake). Business critical users: This group suffers considerable financial losses when service interruptions occur. Low cost users: This group consists of residential users demanding more or less reliable communications services at a relatively low cost. Service interruptions cause discomfort but can be tolerated if they are not too frequent.

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Network Recovery: Protection and Restoration of Optical, SONET-SDH, IP, and MPLS by Jean-Philippe Vasseur M.S. in Computer Science, Mario Pickavet, Piet Demeester

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