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| Introduction | |
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| Introduction to Routing and Packet Forwarding Objectives Key Terms Inside the Router | |
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| Routers Are Computers | |
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| Routers Are at the Network Center | |
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| Routers Determine the Best Path | |
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| Router CPU and Memory | |
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| CPU | |
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| RAM | |
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| ROM | |
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| Flash Memory | |
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| NVRAM | |
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| Internetwork Operating System (IOS) | |
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| Router Bootup Process | |
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| Bootup Process | |
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| Command-Line Interface | |
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| Verifying Router Bootup Process | |
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| IOS Version | |
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| ROM Bootstrap Program | |
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| Location of IOS | |
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| CPU and Amount of RAM | |
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| Interfaces | |
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| Amount of NVRAM | |
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| Amount of Flash | |
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| Configuration Register | |
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| Router Ports and Interfaces | |
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| Management Ports | |
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| Router Interfaces | |
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| Interfaces Belong to Different Networks | |
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| Example of Router Interfaces | |
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| Routers and the Network Layer | |
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| Routing Is Forwarding Packets | |
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| Routers Operate at Layers 1, 2, and 3 | |
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| CLI Configuration and Addressing | |
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| Implementing Basic Addressing Schemes | |
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| Populating an Address Table | |
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| Basic Router Configuration | |
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| Host Name and Passwords | |
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| Configuring a Banner | |
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| Router Interface Configuration | |
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| Each Interface Belongs to a Different Network | |
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| Verifying Basic Router Configuration | |
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| Building the Routing Table | |
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| Introducing the Routing Table | |
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| Show ip route Command | |
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| Directly Connected Networks | |
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| Static Routing | |
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| When to Use Static Routes | |
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| Dynamic Routing | |
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| Automatic Network Discovery | |
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| Maintaining Routing Tables | |
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| IP Routing Protocols | |
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| Routing Table Principles | |
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| Asymmetric Routing | |
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| Path Determination and Switching Functions | |
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| Packet Fields and Frame Fields | |
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| Internet Protocol (IP) Packet Format | |
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| MAC Layer Frame Format | |
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| Best Path and Metrics | |
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| Best Path | |
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| Comparing Hop Count and Bandwidth Metrics | |
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| Equal-Cost Load Balancing | |
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| Equal-Cost Paths Versus Unequal-Cost Paths | |
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| Path Determination | |
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| Switching Function | |
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| Path Determination and Switching Function Details | |
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| Path Determination and Switching Function Summary | |
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| Summary | |
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| Labs | |
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| Check Your Understanding | |
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| Challenge Questions and Activities | |
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| To Learn More | |
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| End Notes | |
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| Static Routing Objectives | |
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| Key Terms | |
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| Routers and the Network | |
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| Role of the Router | |
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| Introducing the Topology | |
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| Examining the Connections of the Router | |
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| Router Connections | |
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| Serial Connectors | |
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| Ethernet Connectors | |
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| Router Configuration Review | |
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| Examining Router Interfaces | |
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| Interfaces and Their Statuses | |
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| Additional Commands for Examining Interface Status | |
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| Configuring an Ethernet Interface | |
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| Configuring an Ethernet Interface | |
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| Unsolicited Messages from IOS | |
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| Reading the Routing Table | |
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| Routers Usually Store Network Addresses | |
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| Verifying Ethernet Addresses | |
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| Commands to Verify Interface Configuration | |
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| Ethernet Interfaces Participate in ARP | |
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| Configuring a Serial Interface | |
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| Examining Serial Interfaces | |
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| Physically Connecting a WAN Interface | |
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| Configuring Serial Links in a Lab Environment | |
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| Verifying the Serial Interface Configuration | |
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| Exploring Directly Connected Networks | |
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| Verifying Changes to the Routing Table | |
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| Routing Table Concepts | |
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| Observing Routes as They Are Added to the Routing Table | |
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| Changing an IP Address | |
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| Devices on Directly Connected Networks | |
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| Accessing Devices on Directly Connected Networks | |
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| Pings from R2 to 172.16.3.1 | |
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| Pings from R2 to 192.168.1.1 | |
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| Cisco Discovery Protocol (CDP) | |
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| Network Discovery with CDP | |
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| Layer 3 Neighbors | |
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| Layer 2 Neighbors | |
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| CDP Operation | |
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| Using CDP for Netw | |