Dynamic Routing Overview /

Dynamic Routing Overview 

Introduction to routing protocols

6.2.1

This page will introduce routing protocols and how they are used.
Routing protocols are different from routed protocols in both function and task.
A routing protocol is the communication used between routers. A routing protocol allows routers to share information about networks and their proximity to each other. Routers use this information to build and maintain routing tables.
Examples of routing protocols are as follows:

• Routing Information Protocol (RIP)
• Interior Gateway Routing Protocol (IGRP)
• Enhanced Interior Gateway Routing Protocol (EIGRP)
• Open Shortest Path First (OSPF)

A routed protocol is used to direct user traffic. A routed protocol provides enough information in its network layer address to allow a packet to be forwarded from one host to another based on the addressing scheme.
Examples of routed protocols are as follows:

• Internet Protocol (IP)
• Internetwork Packet Exchange (IPX)

The next page will describe autonomous systems.

Troubleshooting static route configuration

Troubleshooting static route configuration 

6.1.6

This page will show students how to troubleshoot a static route configuration.
On an earlier page, students configured static routes on Hoboken to access networks on Sterling and Waycross. In this configuration, nodes on the Sterling 172.16.1.0 network cannot reach nodes on the Waycross 172.16.5.0 network.
From privileged EXEC mode on the Sterling router, ping to a node on the 172.16.5.0 network. The ping fails. Now use the traceroute command from Sterling to the address that was used in the ping statement. Note where the traceroute fails. The traceroute indicates that the ICMP packet was returned from Hoboken but not from Waycross. This implies that the trouble exists either on Hoboken or Waycross.
Telnet to the Hoboken router. Try again to ping the node on the 172.16.5.0 network connected to the Waycross router. This ping should succeed because Hoboken is directly connected to Waycross.
The Lab Activities on this page will teach students how to configure static routes for data transfer without dynamic routing protocols.
This page concludes this lesson. The next lesson will explain dynamic routing. The first page provides an overview of routing protocols.

Verifying static route configuration

Verifying static route configuration 

6.1.5 

This page will teach students the process that is used to verify static route configurations.
After static routes are configured it is important to verify that they are present in the routing table and that routing is working as expected. The command show running-config is used to view the active configuration in RAM to verify that the static route was entered correctly. The show ip route command is used to make sure that the static route is present in the routing table.
Use the following steps to verify static route configuration:

• Enter the show running-config command in privileged mode to view the active configuration.
• Verify that the static route has been correctly entered. If the route is not correct, it will be necessary to go back into global configuration mode to remove the incorrect static route and enter the correct one.
• Enter the command show ip route.
• Verify that the route that was configured is in the routing table.

The Lab Activity will show students how to verify default static route configurations.
The next page will teach students how to troubleshoot a static route configuration