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Structuring and Modularizing the Network with Cisco Enterprise Architecture


In this chapter, you learned about modularizing the network, with a focus on the following topics:

  • The hierarchical network model's three layers: access, distribution, and core
  • The Cisco SONA framework that integrates the enterprise-wide network
  • The Cisco Enterprise Architecture functional areas:
    • — Enterprise Campus: Including the Campus Infrastructure module (composed of the Campus Core layer, the Building Distribution layer, and the Building Access layer) and the Server farm module
    • — Enterprise Edge: Including the E-commerce module, the Internet Connectivity module, the Remote Access and VPN module, and the WAN and MAN and Site-to-Site VPN module
    • — Service Provider: Including the Internet Service Provider module, the PSTN module, and the Frame Relay/ATM module
    • — Enterprise Branch
    • — Enterprise Data Center
    • — Enterprise Teleworker
  • The infrastructure services and application networking services used within the Cisco Enterprise Architecture modules
  • Security services to protect network resources and users from internal and external threats
  • High-availability services to ensure adequate connectivity for mission-critical applications
  • Voice services to support VoIP and IP telephony
  • Wireless services to support mobile clients connecting to the enterprise network
  • ANS to make the network aware of the content carried across it and to optimally handle that content
  • Network management protocols and features, including SNMP, MIBs, RMON, NetFlow, CDP, and syslog
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