Services in a Converged WAN - Leamanleaman.org/ccna4/Chap_1.pdf · Objectives Describe how the...
Transcript of Services in a Converged WAN - Leamanleaman.org/ccna4/Chap_1.pdf · Objectives Describe how the...
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Services in a Converged WAN
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1Version 4.0
WAN
Accessing the WAN – Chapter 1
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Objectives
� Describe how the Cisco Enterprise Composite Model (ECNM) provides integrated services over an Enterprise network.
� Describe the key WAN technology concepts.
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 2
� Identify the appropriate WAN technologies to use when matching ECNM best practices with typical enterprise requirements for WAN communications.
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Describe How ECNM Provides Integrated Services over an Enterprise Network
� Explain the purpose and function of WANs
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Describe How ECNM Provides Integrated Services over an Enterprise Network
� Describe the stages of business growth, the corresponding business requirements for services and how those requirements are reflected in the Enterprise’s changing network topology
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Describe How ECNM Provides Integrated Services over an Enterprise Network
� Describe the problems with the Hierarchical Design Model that Cisco's Enterprise Composite Model has been designed to address
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Describe How ECNM Provides Integrated Services over an Enterprise Network
� Explain the purpose of Cisco Enterprise Architectures
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Describe the Key WAN Technology Concepts
� Describe WAN functions in terms of the OSI Reference Model
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Describe the Key WAN Technology Concepts
� Describe the key WAN physical layer concepts for network and Internet communications
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Describe the Key WAN Technology Concepts
� Describe the key WAN data link layer protocols used in today’s Enterprise WAN networks
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Describe the Key WAN Technology Concepts
� Describe the switching technologies used for WANs in an Enterprise setting
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Select the Appropriate WAN Technology to meet ECNM Requirements
� List the various options for connecting subscribers to the WAN
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Select the Appropriate WAN Technology to meet ECNM Requirements
� Describe how Enterprises use leased line services to provide a WAN connection
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Select the Appropriate WAN Technology to meet ECNM Requirements
� Describe the circuit switching options available to provide a WAN connection
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Select the Appropriate WAN Technology to meet ECNM Requirements
� Describe the packet switching options available to provide a WAN connection
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Select the Appropriate WAN Technology to meet ECNM Requirements
� List factors to consider when selecting a WAN connection
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Summary
� A WAN is defined as
A data communications network that operates beyond the geographic scope of a LAN
� WAN primarily operate on layer 1 & 2 of the OSI model
� WAN technologies include
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� WAN technologies include
–Leased line
–ISDN
–Frame relay
–X.25
–ATM
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Summary
� Cisco Enterprise Architecture
–This is an expansion of the hierarchical model that further divides the enterprise network into
•Physical areas
•Logical areas
•Functional areas
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� Selecting the appropriate WAN technology requires considering some of the following:
–WAN’s purpose
–Geographic scope of WAN
–Traffic requirements
–If WAN uses a public or private infrastructure
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