CCNA 3 Module 3 Single-Area OSPF - SpaceAgeTimes.com

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29 Οκτ 2013 (πριν από 4 χρόνια και 9 μέρες)

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CCNA 3 Chapter 3


Single
-
Area OSPF

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Objectives


Link
-
state routing protocol


Single
-
area OSPF concepts


Single
-
area OSPF configuration

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Overview of Link
-
State and
Distance Vector Routing

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Link
-
State Routing Features


Respond quickly to network changes.


Send triggered updates only when network change occurrs.


Send periodic updates known as link
-
state refreshes.


Use a hello mechanism to determine neighbors’ reachability.

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How Routing Information Is Maintained

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Link
-
State
Routing
Algorithms

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Advantages and Disadvantages of
Link
-
State Routing

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Comparing Distance Vector and
Link
-
State Routing

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Single
-
Area OSPF Concepts

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OSPF Overview

OSPF is becoming the preferred IGP protocol
when compared with RIPv1 and RIPv2
because it is scalable.

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OSPF Terminology

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Comparing OSPF with Distance
Vector Routing Protocols

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Shortest Path Algorithm

The best path is the lowest
-
cost path
.

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OSPF Network Types

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OSPF Hello Protocol

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Steps in the Operation of OSPF

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Single
-
Area OSPF Configuration

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Configuring the OSPF Routing Process

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Configuring the OSPF Routing Process

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Configuring OSPF Loopback
Address and Router Priority

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Configuring Router Priority

The priorities can be set to any value from 0 to 255. A value of 0 prevents

that router from being elected. A router with the Highest OSPF priority will win
the election for DR
.

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Modifying OSPF Cost Metric

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Configuring OSPF Authentication


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Configuring OSPF Timers

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OSPF, Propagating a Default Route

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Common OSPF Configuration Issues

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Verifying OSPF Configuration


show ip protocol


show ip route


show ip ospf interface


shop ip ospf


show ip ospf neighbor detail


show ip ospf database


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The
debug and clear Commands for
OSPF Verification