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| Introduction | p. xxix |
| Concepts | |
| Networking in the Enterprise | p. 3 |
| Objectives | p. 3 |
| Key Terms | p. 3 |
| Describing the Enterprise Network | p. 4 |
| Supporting the Business Enterprise | p. 5 |
| Traffic Flow in the Enterprise Network | p. 5 |
| Enterprise Campus | p. 8 |
| Enterprise Edge | p. 8 |
| Service Provider Edge | ... MOREp. 10 |
| Enterprise LANs and WANs | p. 10 |
| Intranets and Extranets | p. 12 |
| Identifying Enterprise Applications | p. 12 |
| Traffic Flow Patterns | p. 12 |
| Applications and Traffic on an Enterprise Network | p. 13 |
| Network Traffic Prioritization | p. 14 |
| Data Traffic | p. 14 |
| Voice and Video Traffic | p. 14 |
| Supporting Remote Workers | p. 15 |
| Teleworking | p. 15 |
| Virtual Private Networks | p. 16 |
| Summary | p. 18 |
| Activities and Labs | p. 18 |
| Check Your Understanding | p. 19 |
| Challenge Questions and Activities | p. 20 |
| Exploring the Enterprise Network Infrastructure | p. 21 |
| Objectives | p. 21 |
| Key Terms | p. 21 |
| Describing the Current Network | p. 22 |
| Enterprise Network Documentation | p. 22 |
| Business Continuity Plan | p. 24 |
| Business Security Plan | p. 25 |
| Network Maintenance Plan | p. 25 |
| Service-Level Agreement | p. 25 |
| Network Operations Center (NOC) | p. 26 |
| Telecommunication Room Design and Considerations | p. 29 |
| Supporting the Enterprise Edge | p. 31 |
| Service Delivery at the Point of Presence | p. 31 |
| Security Considerations at the Enterprise Edge | p. 32 |
| Connecting the Enterprise Network to External Services | p. 33 |
| Reviewing Routing and Switching | p. 34 |
| Router Hardware | p. 35 |
| Out-of-Band Management | p. 37 |
| In-Band Management | p. 38 |
| Basic Router CLI show Commands | p. 38 |
| Basic Router Configuration Using CLI | p. 46 |
| Switch Hardware | p. 48 |
| Basic Switch CLI Commands | p. 50 |
| Summary | p. 59 |
| Activities and Labs | p. 59 |
| Check Your Understanding | p. 60 |
| Challenge Questions and Activities | p. 63 |
| Switching in an Enterprise Network | p. 65 |
| Objectives | p. 65 |
| Key Terms | p. 65 |
| Describing Enterprise-Level Switching | p. 67 |
| Switching and Network Segmentation | p. 67 |
| Multilayer Switching | p. 68 |
| Layer 2 | p. 69 |
| Layer 3 | p. 69 |
| Types of Switching | p. 69 |
| Store-and-Forward | p. 70 |
| Cut-Through Switching | p. 70 |
| Switch Security | p. 70 |
| Preventing Switching Loops | p. 71 |
| Redundancy in a Switched Network | p. 72 |
| Multiple Frame Transmissions | p. 74 |
| MAC Database Instability | p. 75 |
| Spanning Tree Protocol (STP) | p. 75 |
| Blocking | p. 77 |
| Listening | p. 77 |
| Learning | p. 77 |
| Forwarding | p. 77 |
| Disabled | p. 77 |
| Root Bridges | p. 78 |
| Spanning Tree in a Hierarchical Network | p. 79 |
| PortFast | p. 80 |
| UplinkFast | p. 80 |
| BackboneFast | p. 81 |
| STP Diagnostic show Commands | p. 81 |
| Rapid Spanning Tree Protocol (RSTP) | p. 85 |
| Configuring VLANs | p. 85 |
| Virtual LAN | p. 85 |
| Static VLANs | p. 86 |
| Dynamic VLANs | p. 87 |
| Configuring a Virtual LAN | p. 87 |
| Identifying VLANs | p. 91 |
| Trunking and Inter-VLAN Routing | p. 92 |
| Trunk Ports | p. 92 |
| Access Port | p. 93 |
| Trunk Port | p. 93 |
| Extending VLANs Across Switches | p. 94 |
| Inter-VLAN Switching | p. 95 |
| Maintaining VLANs on an Enterprise LAN | p. 97 |
| VLAN Trunking Protocol (VTP) | p. 97 |
| VTP Modes | p. 98 |
| VTP Revision Numbers | p. 98 |
| VTP Message Types | p. 99 |
| Configuring VTP | p. 99 |
| VLAN Support for IP Telephony and Wireless | p. 102 |
| VLAN Best Practices | p. 103 |
| Summary | p. 105 |
| Activities and Labs | p. 105 |
| Check Your Understanding | p. 106 |
| Challenge Questions and Activities | p. 108 |
| Addressing in an Enterprise Network | p. 109 |
| Objectives | p. 109 |
| Key Terms | p. 109 |
| Using a Hierarchical IP Network Address Scheme | p. 110 |
| Flat and Hierarchical Networks | p. 110 |
| Hierarchical Network Addressing | p. 112 |
| Using Subnetting to Structure the Network | p. 115 |
| Using VLSM | p. 116 |
| Subnet Mask | p. 117 |
| Table of Contents provided by Publisher. All Rights Reserved. |
Allan Reid is the curriculum lead for CCNA and a CCNA and CCNP® instructor at the Centennial College CATC in Toronto, Canada.
Jim Lorenz is an instructor and curriculum developer for the Cisco Networking Academy.
Cheryl Schmidt is a professor of Network Engineering Technology at Florida Community College at Jacksonville.