程序代写代做代考 IOS ITE PC v4.0 Chapter 1

ITE PC v4.0 Chapter 1

Chapter 2: Static Routing
Routing and Switching Essentials v6.0

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Cisco Networking Academy Program
Routing and Switching Essentials v6.0
Chapter 2: Static Routing

Chapter 2 – Sections & Objectives
2.1 Static Routing Implementation
Explain the advantages and disadvantages of static routing.
Explain the purpose of different types of static routes.
2.2 Configure Static and Default Routes
Configure IPv4 and IPv6 static routes by specifying a next-hop address.
Configure IPv4 and IPv6 default routes.
Configure a floating static route to provide a backup connection.
Configure IPv4 and IPv6 static host routes that direct traffic to a specific host
2.3 Troubleshoot Static and Default Route Issues
Explain how a router processes packets when a static route is configured.
Troubleshoot common static and default route configuration issues.

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2.1 Static Routing Implementation

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Cisco Networking Academy Program
Routing and Switching Essentials v6.0
Chapter 2: Static Routing

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.

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2.1 – Static Routing
2.1.1.1 – Reach Remote Networks

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.

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2.1.1.2 – Why Use Static Routing?

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.

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2.1.1.3 – When to Use Static Routes

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.

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2.1.2 – Types of Static Routes
2.1.2.1 – Static Route Applications

Types of Static Routes
Standard Static Route

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2.1.2.2 Standard Static Route

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.

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2.1.2.3 Default Static Route

Types of Static Routes
Summary Static Route

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2.1.2.4 Summary Static Route

Types of Static Routes
Floating Static Route

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2.1.2.5 Floating Static Route

6.2 Configure Static and Default Routes

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Cisco Networking Academy Program
Routing and Switching Essentials v6.0
Chapter 2: Static Routing

Configure IPv4 Static Routes
ip route Command

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2.2 Configure Static and Default Routes
2.2.1.1 ip route Command

Configure IPv4 Static Routes
Next-Hop Options
The next hop can be identified by an IP address, exit interface, or both. How the destination is specified creates one of the three following route types:
Next-hop route – Only the next-hop IP address is specified.
Directly connected static route – Only the router exit interface is specified.
Fully specified static route – The next-hop IP address and exit interface are specified.

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2.2.1.2 Next-Hop Options

Configure IPv4 Static Routes
Configure a Next-Hop Static Route

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2.2.1.3 Configure a Next-Hop Static Route

Configure IPv4 Static Routes
Configure Directly Connected Static Routes

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2.2.1.4 Configure a Directly Connected Static Route

Configure IPv4 Static Routes
Verify a Static Route

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2.2.1.6 Verify a Static Route

Configure IPv4 Static Routes
Default Static Route

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2.2.2.1 Default Static Route

Configure IPv4 Static Routes
Configure a Default Static Route

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2.2.2.2 Configure a Default Static Route

Configure IPv4 Static Routes
Verify a Default Static Route
Verify a Default Static Route

Verify a Default Static Route

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2.2.2.3 Verify a Default Static Route

Configure IPv6 Static Routes
The ipv6 route Command
Verify a Default Static Route

Verify a Default Static Route

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2.2.3.1 The ipv6 route Command

Configure IPv6 Static Routes
Next-Hop Options
Verify a Default Static Route

Verify a Default Static Route

Next-hop static IPv6 route – Only the next-hop IPv6 address is specified
Directly connected static IPv6 route – Only the router exit interface is specified
Fully specified static IPv6 route – The next-hop IPv6 address and exit interface are specified

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2.2.3.2 Next-Hop Options

Configure IPv6 Static Routes
Configure a Next-Hop Static IPv6 Route
Verify a Default Static Route

Verify a Default Static Route

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2.2.3.3 Configure a Next-Hop Static IPv6 Route

Configure IPv6 Static Routes
Directly Connected Static IPv6 Route
Verify a Default Static Route

Verify a Default Static Route

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2.2.3.4 Configure a Directly Connected Static IPv6 Route

Configure IPv6 Static Routes
Fully Specified Static IPv6 Route
Verify a Default Static Route

Verify a Default Static Route

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2.2.3.5 Configure a Fully Specified Static IPv6 Route

Configure IPv6 Static Routes
Verify IPv6 Static Routes
Verify a Default Static Route

Verify a Default Static Route

In addition to ping and traceroute, commands to verify static routes include:
show ipv6 route
show ipv6 route static
show ipv6 route network

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2.2.3.6 Verify IPv6 Static Routes

Configure IPv6 Default Routes
Default Static IPv6 Route
Verify a Default Static Route

Verify a Default Static Route

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2.2.4.1 Default Static IPv6 Route

Configure IPv6 Default Routes
Configure a Default Static IPv6 Route
Verify a Default Static Route

Verify a Default Static Route

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2.2.4.2 Configure a Default Static IPv6 Route

Configure IPv6 Default Routes
Verify a Default IPv6 Static Route
Verify a Default Static Route

Verify a Default Static Route

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2.2.4.3 Verify a Default Static Route

Configure IPv6 Default Routes
Floating Static Routes
Verify a Default Static Route

Verify a Default Static Route

Floating static routes have an administrative distance greater than the administrative distance of another static route or dynamic routes.
The static route “floats” and is not used when the route with the better administrative distance is active.
If the preferred route is lost the floating static route can take over.

Configure IPv6 Default Routes
Configure an IPv4 Floating Static Route
Verify a Default Static Route

Verify a Default Static Route

Configure IPv6 Default Routes
Test the IPv4 Floating Static Route
Verify a Default Static Route

Verify a Default Static Route

To test a floating static route:
Use the show ip route command to verify that the routing table is using the default static route.
Use the traceroute command to follow the traffic flow out the primary route.
Disconnect the link or shutdown the primary interface(s). In the curriculum example the serial interfaces on R2 are shutdown.
Use a show ip route command to verify that the routing table is using the floating static route.
Use a traceroute command to follow the traffic flow out the backup route.

Configure Static Host Routes
Automatically Installed Host Routes
Verify a Default Static Route

Verify a Default Static Route

A host route is an IPv4 address with a 32-bit mask or an IPv6 address with a 128-bit mask.
Automatically installed when an IP address is configured on the router.
The local routes are marked with “L” in the output of the routing table.

Configure Static Host Routes
Configure IPv4 and IPv6 Static Host Routes
Verify a Default Static Route

Verify a Default Static Route

Configure Static Host Routes
Configure IPv4 and IPv6 Static Host Routes
Verify a Default Static Route

Verify a Default Static Route

6.2 Troubleshoot Static and Default Route Issues

Troubleshoot IPv4 Static and Default Route Configuration
Troubleshoot a Missing Route
Verify a Default Static Route

IOS troubleshooting commands include:
ping
Extended ping enables you to specify the source IP address for the ping packets.
traceroute
show ip route
show ip interface brief
show cdp neighbors detail

Packet Processing with Static Routes
Solve a Connectivity Problem
Verify a Default Static Route

Finding a missing (or misconfigured) route requires using the right tools in a methodical manner.
Use the ping command to confirm the destination can’t be reached.
A traceroute would also reveal the closest router (or hop) that fails to respond as expected. In this case, the router would then send an Internet Control Message Protocol (ICMP) destination unreachable message back to the source.
The next step is to investigate the routing table using the show ip route command. Look for missing or misconfigured routes.
Incorrect static routes are a common cause of routing problems.

2.4 Chapter Summary

Explain the advantages and disadvantages of static routing.
Explain the purpose of different types of static routes.
Configure IPv4 and IPv6 static routes by specifying a next-hop address.
Configure IPv4 and IPv6 default routes.
Configure a floating static route to provide a backup connection.
Configure IPv4 and IPv6 static host routes that direct traffic to a specific host.
Explain how a router processes packets when a static route is configured.
Troubleshoot common static and default route configuration issues.
Chapter Summary
Summary

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