CCNA 3 - Capitulo 11.1

CCNA 3 - Capitulo 11.1

1. NETWORK DESIGN

   • HIERARCHICAL NETWORKS
     • ALL ENTERPRISE NETWORKS MUST BE ABLE SUPPORT
       • CRITICAL APPLICATIONS
       • CONVERGED NETWORK TRAFFIC
       • DIVERSE BUSINESS NEEDS
       • CENTRALIZED ADMINISTRATIVE CONTROL
     • HIERARCHY IN BORDLESS SWITCHED NETWORK - PRINCIPLES
       • HIERARCHICAL
         • DESIGN FACILICITES UNDERSTANDING THE ROLE OF EACH DEVICE
         • REDUCES FAULT DOMAINS
       • MODULARITY
         • FACILITY NETWORK EXPANSION
         • HELPS TO ALLOW FOR GROUWTH
       • RESILIENCY
         • ALLOWS INTELLIGENT TRAFFIC LOAD SHARING
       • RESILIENCY
         • SATISFIES USER EXPECTATIONS FOR KEEPING NETWORK ALWAYS ON
       • DESIGN FRAMEWORK CAMPUS
         • THREEE TIER MODEL
           • ACCESS LAYER
             • PRIMARY FUNCTIONs AN
               • NETWORK EDGE TRAFFIC ENTER OR EXITS THE NETWORK
               • ACCESS LAYER SWITCH IS PROVIDE NETWORK ACCESS TO THE USER
             • ACCESS SWITCHES ARE CONNECT TO DISTRIBUITION LAYER SWITCHES
           • CORE LAYER
             • NETWORK BACKBONE
             • THE PRIMARY PURPOSE
               • HIGH SPEED BACKBONE CONNECTIVITY
               • AGGREGATOR FOR ALL OF THE DISTRIBUITION LAYER
               • FAULT ISOLATION
               • CONNECT SEVERAL LAYERS OF THE CAMPUS NETWORK
           • DISTRIBUITION LAYER
             • INTERFACES BETWEEN
               • ACCESS LAYER AND CORE LLAYER
             • MANY IMPORTANT FUNCTIONs SUCH
               • AGGREGATING LAYER 2 BROADCAST DOMAINS AND LAYERS 3 BOUNDARIES
               • SWITCHING , ROUTING , ACCESS POLICY TO CONNECT THE ACCESS LAYER TO THE REST OF NETWORK
               • AGGREGATING LARGE SCALE WIRING CLOSET NETWORKS
               • HIGH AVAILABILITY
               • ENSURES HIGH AVAILABILITY USING REDUNDANT DISTRIBUTION SWITCHES AND EQUAL-COST PATHS (ECMP) TO THE CORE.
               • DELIVERS DIFFERENTIATED SERVICES (QOS) FOR DIFFERENT TYPES OF APPLICATIONS
           • THE RECOMMENDATION IS TO BUILD AS EXTENDED STAR PHYSICAL NETWORK TOPOLOGY FROM A CENTRALIZED BUILDING LOCATION TO ALL OTHER BUILDINGS ON THE SAME CAMPUS
         • TWO TIER MODEL
           • ACCESS & DISTRIBUITION LAYER
             • COLLAPSED
           • CORE LAYER
     • CISCO BORDLESS NETWORK
       • INNOVATION AND DESIGN
       • CBN PROVIDES THE FRAMEWORK UNIFY WIRED AND WIRELESS ACCESS , INCLUDING POLICY , ACCESS CONTROL , AND PERFORMANCE MANAGEMENT ACROSS DEVICE TYPES
       • WHATS IS ?
         • NETWORK ARCHITECTURE THAT COMBINES INNOVATION AND DESIGN
         • ALLOWS ORGANIZATIONS TO SUPPORT A BORDLESS NETWORK CONNECT
           • ANYONE , ANYWHERE , ANYTIME ON ANY DEVICE , SECURELY , REABLY AND SEAMLESSLY
       • COMBINING HARDWARE INFRAESTRUCTURE AND POLICY BASED SOFTWARE SOLUTIONS , CBN PROVIDES TWO PRIMARY SETS SERVICE
         • NETWORK SERVICES
         • ENDPOINT SERVICES UNDER UMBRELLA OF INTEGRADED MANAGEMENT SOLUTION