Cisco CCENT, CCNA, CCNP (CCIE) © Copyright 2020 Document name : Communication Cisco CCxx.docx Last update: 01.10.2020 Author: Albert Balogh Table of Content Introduction ...................................................................................................................................................... 13 Certification ...................................................................................................................................................... 13 Cisco Certified Entry Network Technician (CCENT®) .................................................................................. 15 Cisco Certified Network Associate Routing and Switching (CCNA®) .......................................................... 16 Cisco Certified Network Professional (CCNP®) ........................................................................................... 16 Cisco Certified Internetwork Expert (CCIE®) ................................................................................................ 17 Cisco Certified Systems Instructor (CCSI®) ................................................................................................. 17 Authorities ........................................................................................................................................................ 17 Network Design Steps ..................................................................................................................................... 18 Cable Questions ........................................................................................................................................... 18 Analyze a Network ....................................................................................................................................... 19 Multinode Core ............................................................................................................................................. 20 Multi-Tier Architecture .................................................................................................................................. 21 Three-Tier Architecture ................................................................................................................................ 22 Two-Tier Architecture ................................................................................................................................... 22 Typical Components of an Enterprise Network ........................................................................................ 23 CORE-Layer (Backbone) ......................................................................................................................... 23 Distribution-Layer ..................................................................................................................................... 25 Access-Layer ............................................................................................................................................ 25 Switch Block ............................................................................................................................................. 25 Leaf-Spine Network Topology ...................................................................................................................... 26 Routing Protocol Considerations ................................................................................................................. 27 Routing Protocol Migration ........................................................................................................................... 27 IPv6 Migration ........................................................................................................................................... 27 Network Summarization ........................................................................................................................... 27 Network Maintenance Plan .......................................................................................................................... 27 Asynchronous Routing ................................................................................................................................. 27 Out of order packets ..................................................................................................................................... 27 Troubleshooting Models ............................................................................................................................... 28 Hierarchical Network Design ........................................................................................................................ 28 Flat Network Topology ................................................................................................................................. 28 OSI-Layers ....................................................................................................................................................... 28 Physical Layer (Layer 1) .............................................................................................................................. 30 Data Link Layer (Layer 2)............................................................................................................................. 30 Network Layer (Layer 3)............................................................................................................................... 30 Transport Layer (Layer 4) ............................................................................................................................ 30 Session Layer (Layer 5) ............................................................................................................................... 30 Presentation Layer (Layer 6) ....................................................................................................................... 31 Application Layer (Layer 7) .......................................................................................................................... 31 INTERNETWORKING ..................................................................................................................................... 32 Network Segmentation ................................................................................................................................. 32 Possible causes of LAN Traffic Congestion ................................................................................................. 32 HUB .............................................................................................................................................................. 32 Switch ........................................................................................................................................................... 32 Configuring Switch.................................................................................................................................... 32 Troubleshooting Switch ............................................................................................................................ 33 Communication Cisco CCxx.docx 01.10.20 1 Autor: Albert Balogh Bridge ........................................................................................................................................................... 33 Router........................................................................................................................................................... 33 Configuring Router ................................................................................................................................... 34 Troubleshooting Router ............................................................................................................................ 34 CEF - Cisco Express Forwarding ............................................................................................................. 34 Brouter.......................................................................................................................................................... 35 Repeaters ..................................................................................................................................................... 35 Token Ring Hub ........................................................................................................................................... 36 Token Ring - Frame Format ..................................................................................................................... 36 IOS License Management ........................................................................................................................... 36 Cisco Wireless LAN Controllers (WLCs) .................................................................................................. 37 Wireless Access Point (AP, IEEE 802.11) ................................................................................................... 37 Cisco Wireless Access Points .................................................................................................................. 37 Same-Layer interaction ................................................................................................................................ 37 Adjacent-Layer interaction ........................................................................................................................... 37 Bandwidth Delay