ccnp route 642 902 m3 configuring ospf

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    Module 3Implementing a Scalable Multiarea

    -

    www.netpro.com.vn 2010 Cisco Systems, Inc. All rights reserved. CCNP1 v1.01-1

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    Objectives

    Planning Routing Implementations with OSPFas the Scalable Routin Protocol

    How OSPF Packet Processes Work Improving Routing Performance in a Complex

    Enterprise Network

    Configuring and Verifying OSPF Routing on gur ng an er y ng ou e

    Summarization

    Types

    Configuring and Verifying OSPFu en ca on

    Module Summary

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    Planning RoutingImplementations with OSPF as

    h l l R in Pr l

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    Link-State Protocols

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    Link-State Protocol Data Structures

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    OSPF Areas

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    Area Terminology and Router Types

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    OSPF Adjacencies

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    OSPF Calculation

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    OSPF Metric

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    Building the LSDB

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    Link-State Data Structures: LSA Operation

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    Defining the More Recent LSA

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    LSA Sequence Numbering

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    LSA Sequence Numbers and Maximum Age

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    Planning for OSPF

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    OSPF Implementation Plan

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    Documenting OSPF

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    Example: Planning for Basic OSPF

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    How OSPF Packet Processes Work

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    OSPF Functions

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    OSPF Packet Header Format

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    OSPF Packet Types

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    Neighbor Relationship: The Hello

    Packet

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    OSPF Routing Update Packets

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    Establishing Bidirectional Communication

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    Discovering the Network Routes

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    Adding the Link-State Entries

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    OSPF Neighbor States

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    Flooding Changes in Topology

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    The debug ip ospf packet Command

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    Im rovin Routin Performance ina Complex Enterprise Network

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    OSPF Network Types

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    Point-to-Point Links

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    Multiaccess Broadband Network

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    OSPF Adjacency Over Metro Ethernet andEoMPLS

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    OSPF Adjacency Over MPLS VPN

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    Electing the DR and BDR

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    Setting the Priority for DR Election

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    NBMA Topology

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    DR Election in NBMA Topology

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    Frame Relay Topologies

    OSPF over NBMA Topology Modes of

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    OSPF over NBMA Topology Modes ofOperation

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    Nonbroadcast Mode (NBMA Mode)

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    Steps to Configure NBMA Mode

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    Nonbroadcast Mode Operation

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    NBMA Configuration Example

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    The show ip ospf neighbor Command

    S

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    Using Subinterfaces

    P i P i S bi f

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    Point-to-Point Subinterfaces

    P i t t P i t S bi t f E l

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    Point-to-Point Subinterfaces Example

    M lti i t S bi t f

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    Multipoint Subinterfaces

    Multipoint Subinterfaces Example

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    Multipoint Subinterfaces Example

    Point to Point Mode

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    Point-to-Point Mode

    Point to Point Configuration Example

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    Point-to-Point Configuration Example

    Point to Point Verification Example

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    Point-to-Point Verification Example

    Point-to-Multipoint Mode

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    Point-to-Multipoint Mode

    Point-to-Multipoint Configuration Example

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    Point-to-Multipoint Configuration Example

    Point-to-Multipoint VerificationE l

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    Example

    Point-to-Multipoint Nonbroadcast

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    Point to Multipoint Nonbroadcast

    OSPF over NBMA Topology Summary

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    OSPF over NBMA Topology Summary

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    Configuring and Verifying OSPF

    Initializing Single-Area and Multiarea OSPF

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    g g

    Planning for OSPF

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    g

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    Configuring OSPF for Multiple Areas

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    g g p

    OSPF Router ID

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    Configuration of Loopback Interfaces

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    Setting OSPF Router ID

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    OSPF Router ID Verification

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    Steps to Verify Basic OSPF

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    Example: The show ip ospf Command

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    Example: The show ip ospf interfaceCommand

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    Example: The show ip ospf neighborCommand

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    Example: The show ip route ospf Command

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    LSA Types

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    LSA Type 1: Router LSA

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    LSA Type 2: Network LSA

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    LSA Type 3: Summary LSA

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    LSA Type 4: ASBR Summary LSA

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    LSA Type 5: External LSA

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    LSA Type 7: NSSA External LSA

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    Example of Different LSAs

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    OSPF LSDB: Intra-Area Routing

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    OSPF LSDB: Intra-Area Routing (Cont.)

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    OSPF LSDB: Interarea Routing

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    OSPF LSDB: Interarea Routing (Cont.)

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    OSPF LSDB: External Routes

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    OSPF LSDB: External Routes (Cont.)

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    OSPF LSDB: NSSA

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    OSPF LSDB: NSSA (Cont.)

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    OSPF LSDB: Virtual Link

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    OSPF LSDB: Virtual Link (Cont.)

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    The show ip route Command

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    Calculating Costs for E1 and E2 Routes

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    OSPF LSDB Overload Protection

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    OSPF Passive Interface

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    Design Limitations of OSPF

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    Virtual Links as a Solution

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    OSPF Virtual Link Configuration

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    Virtual Link Verification

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    OSPF Cost

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    Confi urin and Verif in OSPFRoute Summarization

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    Benefits of Route Summarization

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    Interarea Route Summarization

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    Configure Interarea RouteSummarization

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    Configure External RouteSummarization

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    Route Summarization Configuration Example atASBR

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    Default Routes in OSPF

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    Configure OSPF Default Route

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    Default Route Configuration Example

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    Stub and Totally Stub Area Rules

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    OSPF Totally Stubby Areas

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    Routing Table in a Stub Area

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    Routing Table in a Totally Stubby Area

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    NSSA Configuration Example

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    Authentication

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    Configure Simple Password Authentication forOSPF

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    Simple Password Authentication ConfigurationExample

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    Configure OSPF MD5 Authentication

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    Verifying MD5 Authentication

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    Authentication Verification

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    Successful Simple Password AuthenticationVerification

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    Troubleshooting Simple PasswordAuthentication Problems

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    Successful MD5 Authentication Verification

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    Troubleshooting MD5 AuthenticationProblems

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    Module Summary

    Module Summary

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    Module Summary (Cont.)

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