By David E. McDysan
ISBN-10: 0072222565
ISBN-13: 9780072222562
ATM (Asynchronous move Mode) and MPLS (Multiprotocol Label Switching) are either criteria for shifting details over networks. this can be a whole consultant to figuring out and enforcing those networking applied sciences.
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Extra resources for ATM & MPLS Theory & Application: Foundations of Multi-Service Networking
Example text
It also presents a discussion of connectionless and connection-oriented data services. Chapter 6 then introduces the connection-oriented digital Time Division Multiplexing (TDM) communication technique widely used in contemporary voice and private line networks. The text then moves on to an in-depth review of one of ATM’s key ancestors: the Narrowband Integrated Services Digital Network (N-ISDN) protocol stack. Here, the reader is introduced to the concept of multiple planes of layered protocols serving the user, control, and management functions.
Written records from ancient Syrian civilizations scribed over 5000 years old in a discrete cuneiform alphabet on clay tablets mark the beginnings of digital communication. Soon thereafter, messengers conveyed this written digital information, and eventually this was institutionalized as a postal service. Although usually viewed as a modern phenomenon, digital long-distance optical communications began over two millennia ago when the ancient Greeks used line-of-sight optical communications to relay information using placement of torches on towers at relay stations.
Initially, these LANs sprang up as disparate islands run by entrepreneurial departments, but then the need arose to share the information. As 15 16 ATM & MPLS Theory & Application: Foundations of Multi-Service Networking described in Chapter 9, first bridges and then routers enabled interdepartmental connectivity of diverse computing resources in a cost-effective manner. When the need arose to interconnect these LANs, the mainframe manager and entrepreneurial LAN managers had to work together in order to provide access from the LANs to the mainframes.