CCNA 3 Labs and Study Guide - BINARYBB.INFO – @jagalbraith

34 Switching Basics and Intermediate Routing CCNA 3 Labs and Study Guide
RIP Version 2
RIP was designed to work as a simple Interior Gateway Protocol (IGP) within small and moderate-sized
autonomous systems. The first version of RIP did not support VLSM, but rather simply advertised the
classful network to RIP neighbors. However, the original RIP specification (RFC 1058) provided several
empty fields in the RIP update that are now used by RIP version 2 (RFC 2453). In the following two exercises,
you will compare and contrast RIPv1 and RIPv2. Then, you will complete a research exercise to discover
more details about the two versions of RIP.
Compare and Contrast Exercise
Compare and contrast RIPv1 and RIPv2 by listing the features of each protocol in the following table.
RIPv1 Features RIPv2 Features
Hop count is the metric. Hop count is the metric.
Maximum hop count is 15. Maximum hop count is 15.
Uses hold-down timers to prevent routing loops. Uses hold-down timers to prevent routing loops.
Uses split-horizon to prevent routing loops. Uses split-horizon to prevent routing loops.
Failure to receive updates in a timely manner Failure to receive updates in a timely manner results in
results in removal of routes previously learned removal of routes previously learned from a neighbor.
from a neighbor.
The administrative distance is 120. The administrative distance is 120.
Routing updates are broadcast every Routing updates are multicast every 30 seconds by 30
seconds by default. default.
Capable of load balancing over as many as six Capable of load balancing over as many as six
equal-cost paths—four paths by default. equal-cost paths—four paths by default.
Authentication is not supported. Supports clear-text and Message Digest 5 (MD5)
authentication.
VLSM is not supported— VLSM is supported—sends mask in the update.
it is a classful routing protocol.
Does not support manual route summarization. Supports manual route summarization.
From your preceding list of features, what are the four improvements added to RIPv2?
■ Multicasting of updates
■ Support for simple and MD5 authentication
■ Support for VLS because subnet mask information is sent in updates
■ Support for route summarization
Internet Research
RIP is an open standard, which means the specifications for the format of RIP messages is not proprietary
and can be implemented by any vendor or software developer. When you are not sure about an open standard
such as RIP or OSPF, you can always refer to the original Request For Comments (RFC) for that
standard. For this research exercise, use the Internet to find the RFC for RIPv2 and answer the following
questions.