2 StaticRouting-students-cisco .ppt
- 1. © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 1 Instructor Materials Chapter 2: Static Routing CCNA Routing and Switching Introduction to Networks v6.0
- 2. © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 3 Chapter 2: Static Routing Routing and Switching Essentials v6.0
- 3. © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 4 2.1 Static Routing Implementation
- 4. Presentation_ID 5 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Static Routing Reach Remote Networks A router can learn about remote networks in one of two ways: • Manually - Remote networks are manually entered into the route table using static routes. • Dynamically - Remote routes are automatically learned using a dynamic routing protocol.
- 5. Presentation_ID 6 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Static Routing Why Use Static Routing? Static routing provides some advantages over dynamic routing, including: Static routes are not advertised over the network, resulting in better security. Static routes use less bandwidth than dynamic routing protocols, no CPU cycles are used to calculate and communicate routes. The path a static route uses to send data is known.
- 6. Presentation_ID 7 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Static Routing When to Use Static Routes Static routing has three primary uses: Providing ease of routing table maintenance in smaller networks. Routing to and from stub networks. A stub network is a network accessed by a single route, and the router has no other neighbors. Using a single default route to represent a path to any network that does not have a more specific match with another route in the routing table.
- 7. Presentation_ID 8 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Types of Static Routes Static Route Applications Static Routes are often used to: Connect to a specific network. Provide a Gateway of Last Resort for a stub network. Reduce the number of routes advertised by summarizing several contiguous networks as one static route. Create a backup route in case a primary route link fails.
- 8. Presentation_ID 9 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Types of Static Routes Standard Static Route
- 9. Presentation_ID 10 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Types of Static Routes Default Static Route A default static route is a route that matches all packets. A default route identifies the gateway IP address to which the router sends all IP packets that it does not have a learned or static route. A default static route is simply a static route with 0.0.0.0/0 as the destination IPv4 address.
- 10. © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 11 6.2 Configure Static