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Dynamic routing protocols can help
simplify the life of a network administrator. Dynamic routing
makes it possible to avoid the time-consuming and exacting process
of configuring static routes. Dynamic routing also makes it
possible for routers to react to changes in the network and to
adjust their routing tables accordingly, without the intervention
of the network administrator. However, dynamic routing can cause
problems. Some of the problems associated with dynamic distance
vector routing protocols are discussed in this module, along with
some of the steps that designers of the protocols have taken to
solve the problems.
Routing Information Protocol (RIP)
is a distance vector routing protocol that is used in thousands of
networks throughout the world. The fact that RIP is based on open
standards and is very simple to implement makes it attractive to
some network administrators, although RIP lacks the power and
features of more advanced routing protocols. Because of its
simplicity, RIP is a good beginning protocol for the networking
student. This module also introduce RIP configuration and
troubleshooting.
Like RIP, Interior Gateway Routing
Protocol (IGRP) is a distance vector routing protocol. Unlike RIP,
IGRP is a Cisco-proprietary protocol rather than a standards-based
protocol. While remaining very simple to implement, IGRP is a more
complex routing protocol than RIP and it is able to use a number
of factors to determine the best route to a destination network.
This module will introduce IGRP configuration and troubleshooting.
Students completing this module should be able to:
- Describe how routing loops can
occur in distance vector routing
- Describe several methods used by
distance vector routing protocols to ensure that routing
information is accurate
- Configure RIP
- Use the
ip classless
command
- Troubleshoot RIP
- Configure RIP for load balancing
- Configure static routes for RIP
- Verify RIP
- Configure IGRP
- Verify IGRP operation
- Troubleshoot IGRP
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