Chapter 7: Static Routing
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Questions and Answers

What is one advantage of static routing over dynamic routing?

  • Static routes automatically adjust to network changes.
  • Static routes use less bandwidth than dynamic routing protocols. (correct)
  • Static routes are easier to configure.
  • Static routes require more CPU cycles to manage.

    • What is the primary purpose of a floating static route?

  • To automatically update routes.
  • To reduce the number of routing table updates.
  • To act as a backup connection. (correct)
  • To increase security of static routes.

    • How does a router learn about remote networks when using static routing?

  • By calculating the shortest path.
  • By exchanging route information with neighboring routers.
  • By receiving updates from a central server.
  • By manual entry into the route table. (correct)

    • Which of the following statements about static routes is incorrect?

    <p>Static routes are automatically adjusted by routers.</p> Signup and view all the answers

    When configuring an IPv4 default route, what is specified?

    <p>A specific next-hop address.</p> Signup and view all the answers

    What is one disadvantage of static routing?

    <p>Static routes require manual updates for network changes.</p> Signup and view all the answers

    Which statement best describes the operation of a router when a static route is established?

    <p>The router may prioritize static routes over dynamic routes.</p> Signup and view all the answers

    What kind of routing is characterized by routes manually defined in the routing table?

    <p>Static routing</p> Signup and view all the answers

    What is a significant drawback of static routing in larger networks?

    <p>It is difficult to maintain and configure.</p> Signup and view all the answers

    When is static routing most appropriately used?

    <p>In smaller networks that are not expected to grow significantly.</p> Signup and view all the answers

    What does a default static route do?

    <p>Matches all packets without specific routing info.</p> Signup and view all the answers

    Which one of the following best describes a stub network?

    <p>A network with a single route and no neighbors.</p> Signup and view all the answers

    What is the purpose of summarizing several networks into one static route?

    <p>To reduce the number of routes advertised.</p> Signup and view all the answers

    What is required for the proper implementation of static routing?

    <p>Comprehensive knowledge of the entire network.</p> Signup and view all the answers

    Which scenario is a typical application of static routes?

    <p>Creating backup routes in a network.</p> Signup and view all the answers

    What is required for a static route that uses a multi-access interface?

    <p>The next hop must be directly connected.</p> Signup and view all the answers

    What routing table entry represents the default static route?

    <p>0.0.0.0/0</p> Signup and view all the answers

    Which command is NOT useful for verifying static routes?

    <p>show ip route summary</p> Signup and view all the answers

    What is the main purpose of route summarization?

    <p>To advertise multiple addresses as a single address.</p> Signup and view all the answers

    What characterizes a floating static route?

    <p>It has a greater administrative distance than other routes.</p> Signup and view all the answers

    Which command would be best to verify a default static route?

    <p>show ip route</p> Signup and view all the answers

    What does a less-specific subnet mask in route summarization do?

    <p>Expands the number of addresses covered by the route.</p> Signup and view all the answers

    Which of the following is NOT a reason to configure a default static route?

    <p>To improve routing efficiency for known networks.</p> Signup and view all the answers

    When configuring a static route, what must the specified exit interface support?

    <p>Directly connected next hops only.</p> Signup and view all the answers

    What is the default administrative distance of a static route?

    <p>1</p> Signup and view all the answers

    What must happen for a static route to be entered in the routing table?

    <p>The exit interface must be configured correctly and in the routing table.</p> Signup and view all the answers

    Which of the following describes a floating static route?

    <p>A static route created to back up a primary route with a higher administrative distance.</p> Signup and view all the answers

    What is the purpose of a default route in a routing table?

    <p>To provide a way to forward packets when there are no specific matches.</p> Signup and view all the answers

    How can multiple static routes be managed in a routing table?

    <p>By configuring them as a single summary route.</p> Signup and view all the answers

    What is the primary function of a floating static route?

    <p>To provide a backup path in case of link failure</p> Signup and view all the answers

    Which command is used to configure a static route in IPv4?

    <p>ip route</p> Signup and view all the answers

    How is a next-hop static route defined?

    <p>By only indicating the next-hop IP address</p> Signup and view all the answers

    In a fully specified static route, what information is defined?

    <p>Both the output interface and the next-hop IP address</p> Signup and view all the answers

    What differentiates a directly attached static route from other types?

    <p>Only the exit interface is specified</p> Signup and view all the answers

    What happens when a packet needs to reach a next-hop IP address?

    <p>The router searches again for a match</p> Signup and view all the answers

    What is a key characteristic of a floating static route in terms of administrative distance?

    <p>It has a higher administrative distance than the primary route</p> Signup and view all the answers

    Which option represents a potential use case for a fully specified static route?

    <p>Sending packets directly to a specified subnet without intermediate routing</p> Signup and view all the answers

    Which command verifies that the routing table is using the floating static route?

    <p>show ip route command</p> Signup and view all the answers

    What is the recommended command to follow traffic flow out the primary route?

    <p>traceroute command</p> Signup and view all the answers

    When troubleshooting routing issues, which command is NOT commonly used?

    <p>show version</p> Signup and view all the answers

    What must happen for a floating static route to take over routing traffic?

    <p>The preferred route must be lost.</p> Signup and view all the answers

    In which scenario is it more efficient to configure a static route with an exit interface?

    <p>When using point-to-point serial links.</p> Signup and view all the answers

    Which of the following is a characteristic of static routes on multi-access networks?

    <p>They can use both a next-hop IP address and an exit interface.</p> Signup and view all the answers

    Which command would you use to test connectivity to a specific IP address?

    <p>ping</p> Signup and view all the answers

    Study Notes

    Chapter 7: Static Routing

    • Static routing is a method for manually configuring routing tables on routers.
    • It involves manually entering remote network information into the route table.
    • Dynamic routing automatically learns remote routes using a routing protocol.
    • Static routing offers advantages in security and resource usage.
    • Static routes are not advertised over the network, thus improving security.
    • They use fewer CPU cycles and bandwidth compared to dynamic protocols.
    • The path for data transmission is known with static routes, which is a known advantage
    • Static routes are unsuitable for large and expanding networks due to increased maintenance issues

    Chapter 7: Objectives

    • Understand the pros and cons of static routing.
    • Learn about various static route types.
    • Configure IPv4 static routes with a next-hop address.
    • Set up IPv4 default routes.
    • Configure IPv4 summary routes to reduce routing table updates.
    • Implement floating static routes for backup connections.
    • Learn how routers process packets with configured static routes.
    • Troubleshoot static and default route configuration issues.

    Static Routing: Reaching Remote Networks

    • Routers can reach remote networks manually (static routes) or dynamically (dynamic routing protocols).
    • Static routes involve manually entering remote network information into the router's routing table.

    Why Use Static Routing?

    • Static routes offer better security as they aren't advertised over the network.
    • Static routes use less bandwidth and CPU cycles; routing table updates aren't needed..
    • The data path for static routing is known.

    Reasons to Avoid Static Routing

    • Static routing demands substantial time during initial setup and maintenance.
    • Configuration errors are more common, particularly in extensive networks.
    • Network administrators must intervene to update routing information, which is time-consuming.
    • Static routing doesn't scale well with growth; maintenance might become challenging.
    • Configuration necessitates a complete network understanding.

    When to Use Static Routes

    • Ideal for maintaining routing tables in smaller networks that won't significantly expand.
    • Utilized for connecting to or from stub networks. Stub networks are accessed via a single route; the router has no other neighbors.
    • Use a default route to define paths to networks lacking specific match routes in the routing table.

    Types of Static Routes

    • Static routes establish connections to specific networks.
    • Provide a gateway of last resort for stub networks.
    • Improve efficiency by summarizing several contiguous networks into a single static route.
    • Act as backup routes when primary routes fail.

    Standard Static Route

    • Static route, illustrated in a network diagram scenario, allows direct connection to a stub network.

    Default Static Route

    • A default static route matches all packets.
    • It defines the gateway IP address.
    • The router sends any packets lacking a matching learned or static route to the gateway.
    • The address 0.0.0.0/0 designates a default static route, indicating a destination IPv4 address.

    Summary Static Route

    • A summary static route facilitates the representation of multiple networks, facilitating reduced routing-table updates.
    • A single summary route can represent multiple networks, reducing administrative overhead.

    Floating Static Route

    • A floating static route acts as a backup when another route (static or dynamic) isn't available.
    • It's configured with a higher administrative distance compared to other routes.

    Configure IPv4 Static Routes

    • The ip route command configures IPv4 static routes.
    • Use parameters like network address, subnet mask, IP address, or exit interface for specifying routes.

    Next-Hop Options

    • Next-hop routes are configured with only the next-hop IP address; routing table resolution of the exit interface is required.
    • Static routes can be directly attached to a router or fully specified, including the next-hop IP address. Direct attachment is defined by the exit interface and is most applicable to point-to-point connections.

    Troubleshoot Static and Default Route Issues

    • Utilize common IOS (Inter-Operability System) troubleshooting commands: ping, traceroute, show ip route, show ip interface brief, and show cdp neighbors detail.

    Chapter 7: Summary

    • Static routes use a next-hop IP address.
    • Resolving a next-hop IP address involves the routing table specifying an exit interface.
    • Static route configuration is efficient on point-to-point serial links, focusing on exit interfaces.
    • Static routes are usually suitable for multi-access networks (e.g. Ethernet), enabling specification of both IP address and exit interface.
    • Defaults to a "1" administrative distance.

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    Related Documents

    Cisco Networking Academy Chapter 7: Static Routing PDF

    Description

    This quiz covers the key concepts of static routing, including its advantages and disadvantages compared to dynamic routing. You'll learn about various static route types, IPv4 configurations, and strategies for efficient routing table management. Test your understanding of these important networking principles.

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