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Building an ATM Wide Area Network July 26, 1999 By David Willis First things First: Understanding your Network Requirements Like any networking project, expanding an ATM network backbone requires a detailed understanding of your current traffic patterns and how they will change with future growth. Any wide area network project involves considerable expense and effort, and you won't want to implement a full deployment only to realize your organization's needs aren't being met.
Using worksheets that identify each application and its sensitivity to delay and loss, you should then group applications by Service Class, forming logical overlays on an underlying physical topology. Also note the current format of the traffic ATM, frame-based LAN, Frame Relay, frame-based HDLC, bit-oriented video, etc. Later, you'll need to identify the ATM conversion methods you'll be using to transport the non-ATM streams across the WAN.
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