WAN Technologies - univ-pau.fr

1 1 2004, Cisco Systems, Inc. All rights Technologies Based onCCNA 4 SlidesCompiled & modified by C. Pham222 2004, Cisco Systems, Inc. All rights Networks (WANs)333 2004, Cisco Systems, Inc. All rights Network (MANs)444 2004, Cisco Systems, Inc. All rights Determination555 2004, Cisco Systems, Inc. All rights Any internetwork must include the following:Consistent end-to-end addressingAddresses that represent network topologiesBest path selectionDynamic or static routingSwitching666 2004, Cisco Systems, Inc. All rights : core of WAN Technologies Routers send packets from oneinterface/network to another cisco777 2004, Cisco Systems, Inc. All rights TopologyStar TopologyFull-Mesh TopologyPartial-Mesh Topology888 2004, Cisco Systems, Inc.

2 All rights Internal Components999 2004, Cisco Systems, Inc. All rights Internal Components101010 2004, Cisco Systems, Inc. All rights Components of a 2600 Router111111 2004, Cisco Systems, Inc. All rights Connections on a 2600 Router121212 2004, Cisco Systems, Inc. All rights External Connections131313 2004, Cisco Systems, Inc. All rights or Terminal ConsoleConnection141414 2004, Cisco Systems, Inc. All rights Connection to Console orAuxiliary Port151515 2004, Cisco Systems, Inc. All rights Technology161616 2004, Cisco Systems, Inc. All rights Service Providers171717 2004, Cisco Systems, Inc. All rights Layer: WANs181818 2004, Cisco Systems, Inc.

3 All rights Types191919 2004, Cisco Systems, Inc. All rights Serial WAN Connectors202020 2004, Cisco Systems, Inc. All rights Serial Connections212121 2004, Cisco Systems, Inc. All rights Line Types and Bandwidth222222 2004, Cisco Systems, Inc. All rights Service Unit/Data Service 2004, Cisco Systems, Inc. All rights Transmission242424 2004, Cisco Systems, Inc. All rights Standards252525 2004, Cisco Systems, Inc. All rights Encapsulation262626 2004, Cisco Systems, Inc. All rights Data-Link Protocols272727 2004, Cisco Systems, Inc. All rights Switching282828 2004, Cisco Systems, Inc. All rights Switching292929 2004, Cisco Systems, Inc.

4 All rights Link Options303030 2004, Cisco Systems, Inc. All rights Link Options313131 2004, Cisco Systems, Inc. All rights Dialup323232 2004, Cisco Systems, Inc. All rights 2004, Cisco Systems, Inc. All rights withstandard serialinterface,connected to aterminal adapterRouter with nativeISDN BRI U or S/Tinterface or PRI343434 2004, Cisco Systems, Inc. All rights Line Leased lines are not only used to provide directpoint-to-point connections between EnterpriseLANS, they can also be used to connectindividual branches to a packet 2004, Cisco Systems, Inc. All rights with provides a low bit rate,shared-variable capacity thatmay either be switched orpermanent363636 2004, Cisco Systems, Inc.

5 All rights Relay Most Frame Relay connections are based on PVCs ratherthan SVCs. It implements no error or flow control. This leads toreduced latency. Frame Relay provides permanent shared mediumbandwidth connectivity that carries both voice and 2004, Cisco Systems, Inc. All rights Asynchronous Transfer Mode (ATM) is atechnology capable of transferring voice, video,and data through private and public networks. It is built on a cell based architecture rather thanon a frame-based 2004, Cisco Systems, Inc. All rights DSL uses existing twisted-pair telephone lines totransport high-bandwidth data DSL service is considered broadband, as it usesmultiple frequencies within the same physicalmedium to transmit data393939 2004, Cisco Systems, Inc.

6 All rights TechnologySplitter The local loop connects the splitter to the DSLAM DSLAM connected to ISP using ATM technology Voice and data use separate frequency ranges(voice 0-4 Khz, data 20 Khx 1 Mhz)404040 2004, Cisco Systems, Inc. All rights Modem Enhanced Cable Modems enable two-way. High speed data transmissionsusing the same coaxial lines thattransmit cable 2004, Cisco Systems, Inc. All rights Data Network Architecture424242 2004, Cisco Systems, Inc. All rights WAN434343 2004, Cisco Systems, Inc. All rights Operate at the Lower ThreeLevels of the OSI Model444444 2004, Cisco Systems, Inc. All rights WAN Traffic Types454545 2004, Cisco Systems, Inc.

7 All rights In WAN Design464646 2004, Cisco Systems, Inc. All rights Design Model The links connecting the various sites in anarea that provide access to the enterprisenetwork are called the access links oraccess layer of the WAN. Traffic between areas is distributed by thedistribution links, and is moved onto thecore links for transfer to other regions,when 2004, Cisco Systems, Inc. All rights of the Hierarchical Approach Scalability: networks can grow without sacrificingcontrol or manageability Ease of Implementation: clear functionality at eachlayer Ease of troubleshooting: Isolation of problems in thenetwork is easier Predicatability network modelling and caapacityplannng easier Protocol Support: mixing current and futureapplications and protocols is easier Manageability: all the above improve themanageability of the network484848 2004, Cisco Systems, Inc.

8 All rights for WAN Connectivity494949 2004, Cisco Systems, Inc. All rights Hierarchy505050 2004, Cisco Systems, Inc. All rights the Internet as an Enterprise WAN Enterprise WANs will haveconnections to the Internet. This poses security problems but also provides analternative for inter-branch traffic. VPN Technologies can solve security issues515151 2004, Cisco Systems, Inc. All rights Model525252 2004, Cisco Systems, Inc. All rights 2004, Cisco Systems, Inc. All rights