introduction xxii part i identifying your customer's needs and goals chapter analyzing business goals and constraints using a top-down network design methodology using a structured network design process systems development life cycles plan design implement operate optimize (pdioo) network lifecycle analyzing business goals working with your client changes in enterprise networks networks must make business sense networks offer a service the need to support mobile users the importance of network security and resiliency typical network design business goals identifying the scope of a network design project identifying a customer's network applications analyzing business constraints politics and policies .budgetary and staffing constraints project scheduling business goals checklist summary review questions design scenario chapter analyzing technical goals and tradeoffs scalability planning for expansion expanding access to data constraints on scalability availability disaster recovery specifying availability requirements five nines availability the cost of downtime mean time between failure and mean time to repair network performance network performance definitions optimum network utilization throughput throughput of internetworking devices application layer throughput accuracy efficiency delay and delay variation causes of delay delay variation response time security identifying network assets analyzing security risks reconnaissance attacks denial-of-service attacks developing security requirements manageability usability adaptability affordability making network design tradeoffs technical goals checklist summary review questions design scenario chapter characterizing the existing internetwork characterizing the network infrastructure developing a network map characterizing large internetworks characterizing the logical architecture developing a modular block diagram characterizing network addressing and naming characterizing wiring and media checking architectural and environmental constraints checking a site for a wireless installation performing a wireless site survey checking the health of the existing internetwork developing a baseline of network performance analyzing network availability analyzing network utilization measuring bandwidth utilization by protocol analyzing network accuracy analyzing errors on switched ethernet networks analyzing network efficiency analyzing delay and response time checking the status of major routers, switches, andfirewalls network health checklist summary review questions hands-on project design scenario chapter characterizing network traffic characterizing traffic flow identifying major traffic sources and stores documenting traffic flow on the existing network characterizing types of traffic flow for new networkapplications terminal/host traffic flow client/server traffic flow peer-to-peer traffic flow server/server traffic flow distributed computing traffic flow traffic flow in voice over ip networks documenting traffic flow for new and existing networkapplications characterizing traffic load calculating theoretical traffic load documenting application-usage patterns refining estimates of traffic load caused by applications estimating traffic load caused by routing protocols characterizing traffic behavior broadcast/multicast behavior network efficiency frame size windowing and flow control error-recovery mechanisms characterizing quality of service requirements atm qos specifications constant bit rate service category real-time variable bit rate service category non-real-time variable bit rate service category unspecified bit rate service category available bit rate service category guaranteed frame rate service category ietf integrated services working group qos specifications controlled-load service guaranteed service ietf differentiated services working group qosspecifications grade of service requirements for voice applications documenting qos requirements network traffic checklist summary review questions design scenario summary for part i part ii logical network design chapter designing a network topology hierarchical network design why use a hierarchical network design model? flat versus hierarchical topologies flat wan topologies flat lan topologies mesh versus hierarchical-mesh topologies classic three-layer hierarchical model core layer distribution layer access layer guidelines for hierarchical network design redundant network design topologies backup paths load sharing modular network design cisco safe security reference architecture designing a campus network design topology spanning tree protocol spanning tree cost values rapid spanning tree protocol rstp convergence and reconvergence selecting the root bridge scaling the spanning tree protocol virtual lans fundamental vlan designs wireless lans positioning an access point for maximum coverage wlans and vlans redundant wireless access points redundancy and load sharing in wired lans server redundancy workstation-to-router redundancy hot standby router protocol gateway load balancing protocol designing the enterprise edge topology redundant wan segments circuit diversity multihoming the internet connection virtual private networking site-to-site vpns remote-access vpns service provider edge secure network design topologies planning for physical security meeting security goals with firewall topologies summary review questions design scenario chapter designing models for addressing and numbering guidelines for assigning network layer addresses using a structured model for network layer addressing administering addresses by a central authority distributing authority for addressing using dynamic addressing for end systems ip dynamic addressing ip version dynamic addressing zero configuration networking using private addresses in an ip environment caveats with private addressing network address translation using a hierarchical model for assigning addresses why use a hierarchical model for addressing and routing? hierarchical routing classless interdomain routing classless routing versus classful routing route summarization (aggregation) route summarization example route summarization tips discontiguous subnets mobile hosts variable-length subnet masking hierarchy in ip version addresses link-local addresses global unicast addresses ipv addresses with embedded ipv addresses designing a model for naming distributing authority for naming guidelines for assigning names assigning names in a netbios environment assigning names in an ip environment the domain name system dynamic dns names ipv name resolution summary review questions design scenario chapter selecting switching and routing protocols making decisions as part of the top-down network designprocess selecting switching protocols switching and the osi layers transparent bridging selecting spanning tree protocol enhancements portfast uplinkfast and backbonefast unidirectional link detection loopguard protocols for transporting vlan information ieee .q dynamic trunk protocol vlan trunking protocol selecting routing protocols characterizing routing protocols distance-vector routing protocols link-state routing protocols routing protocol metrics hierarchical versus nonhierarchical routing protocols interior versus exterior routing protocols classful versus classless routing protocols dynamic versus static and default routing on-demand routing scalability constraints for routing protocols routing protocol convergence ip routing routing information protocol enhanced interior gateway routing protocol open shortest path first intermediate system-to-intermediate system border gateway protocol using multiple routing protocols in an internetwork routing protocols and the hierarchical design model redistribution between routing protocols integrated routing and bridging a summary of routing protocols summary review questions design scenario chapter developing network security strategies network security design identifying network assets analyzing security risks analyzing security requirements and tradeoffs developing a security plan developing a security policy components of a security policy developing security procedures maintaining security security mechanisms physical security authentication authorization accounting (auditing) data encryption public/private key encryption packet filters firewalls intrusion detection and prevention systems modularizing security design securing internet connections securing public servers securing e-commerce servers securing remote-access and vpns securing remote-access technologies securing vpns securing network services and network management securing server farms securing user services securing wireless networks authentication in wireless networks data privacy in wireless networks summary review questions design scenario chapter developing network management strategies network management design proactive network management network management processes fault management configuration management accounting management performance management security management network management architectures in-band versus out-of-band monitoring centralized versus distributed monitoring selecting network management tools and protocols selecting tools for network management simple network management protocol management information bases (mib) remote monitoring (rmon) cisco discovery protocol cisco netflow accounting estimating network traffic caused by network management summary review questions design scenario summary for part ii part iii physical network design chapter selecting technologies and devices for campusnetworks lan cabling plant design cabling topologies building-cabling topologies campus-cabling topologies types of cables lan technologies ethernet basics ethernet and ieee . ethernet technology choices half-duplex and full-duplex ethernet -mbps ethernet gigabit ethernet -gbps ethernet selecting internetworking devices for a campus networkdesign criteria for selecting campus internetworking devices optimization features on campus internetworking devices example of a campus network design background information for the campus network design project business goals technical goals network applications user communities data stores (servers) current network at wvcc traffic characteristics of network applications summary of traffic flows performance characteristics of the current network network redesign for wvcc optimized ip addressing and routing for the campus backbone wireless network improved performance and security for the edge of thenetwork summary review questions design scenario chapter selecting technologies and devices for enterprisenetworks remote-access technologies ppp multilink ppp and multichassis multilink ppp password authentication protocol and challenge handshake authentication protocol cable modem remote access challenges associated with cable modem systems digital subscriber line remote access other dsl implementations ppp and adsl selecting remote-access devices for an enterprise network design selecting devices for remote users selecting devices for the central site wan technologies systems for provisioning wan bandwidth leased lines synchronous optical network frame relay frame relay hub-and-spoke topologies and subinterfaces frame relay congestion control mechanisms frame relay traffic control frame relay/atm interworking atm ethernet over atm metro ethernet selecting routers for an enterprise wan design selecting a wan service provider example of a wan design background information for the wan design project business and technical goals network applications user communities data stores (servers) current network traffic characteristics of the existing wan wan design for klamath paper products summary review questions design scenario summary for part iii part iv testing, optimizing, and documenting your networkdesign chapter testing your network design using industry tests building and testing a prototype network system determining the scope of a prototype system testing a prototype on a production network writing and implementing a test plan for your network design developing test objectives and acceptance criteria determining the types of tests to run documenting network equipment and other resources writing test scripts documenting the project timeline implementing the test plan tools for testing a network design types of tools examples of network testing tools ciscoworks internetwork performance monitor wandl network planning and analysis tools opnet technologies ixia tools netiq voice and video management solution netpredict’s netpredictor summary review questions design scenario chapter optimizing your network design optimizing bandwidth usage with ip multicast technologies ip multicast addressing internet group management protocol multicast routing protocols distance vector multicast routing protocol protocol independent multicast reducing serialization delay link-layer fragmentation and interleaving compressed real-time transport protocol optimizing network performance to meet quality of service requirements ip precedence and type of service ip differentiated services field resource reservation protocol common open policy service protocol classifying lan traffic cisco ios features for optimizing network performance switching techniques classic methods for layer packet switching netflow switching cisco express forwarding queuing services first-in, first-out queuing priority queuing custom queuing weighted fair queuing class-based weighted fair queuing low-latency queuing random early detection weighted random early detection traffic shaping committed access rate summary review questions design scenario chapter documenting your network design responding to a customer’s request for proposal contents of a network design document executive summary project goal project scope design requirements business goals technical goals user communities and data stores network applications current state of the network logical design physical design results of network design testing implementation plan project schedule project budget return on investment design document appendix summary review questions design scenario glossary index
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