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  • MPLS Configuration Guide for Cisco NCS 6000 Series Routers, Release 5.2.x First Published: 2014-08-25

    Last Modified: 2016-03-01

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  • C O N T E N T S

    P r e f a c e Preface xiii

    Changes to This Document xiii

    Obtaining Documentation and Submitting a Service Request xiii

    C H A P T E R 1 New and Changed MPLS Features 1

    New and Changed MPLS Feature Information 1

    C H A P T E R 2 Implementing MPLS Label Distribution Protocol 3

    Prerequisites for Implementing Cisco MPLS LDP 4

    Information About Implementing Cisco MPLS LDP 4

    Overview of Label Distribution Protocol 4

    Label Switched Paths 4

    LDP Control Plane 4

    Exchanging Label Bindings 5

    LDP Forwarding 6

    LDP Graceful Restart 7

    Control Plane Failure 8

    Phases in Graceful Restart 9

    Recovery with Graceful-Restart 10

    Label Advertisement Control (Outbound Filtering) 11

    Label Acceptance Control (Inbound Filtering) 11

    Local Label Allocation Control 12

    Session Protection 12

    IGP Synchronization 13

    IGP Auto-configuration 14

    LDP Nonstop Routing 14

    IP LDP Fast Reroute Loop Free Alternate 15

    MPLS Configuration Guide for Cisco NCS 6000 Series Routers, Release 5.2.x iii

  • Downstream on Demand 16

    How to Implement MPLS LDP 17

    Configuring LDP Discovery Parameters 17

    Configuring LDP Discovery Over a Link 18

    Configuring LDP Discovery for Active Targeted Hellos 21

    Configuring LDP Discovery for Passive Targeted Hellos 23

    Configuring Label Advertisement Control (Outbound Filtering) 25

    Setting Up LDP Neighbors 26

    Setting Up LDP Forwarding 28

    Setting Up LDP NSF Using Graceful Restart 30

    Configuring Label Acceptance Control (Inbound Filtering) 32

    Configuring Local Label Allocation Control 33

    Configuring Session Protection 34

    Configuring LDP IGP Synchronization: OSPF 35

    Configuring LDP IGP Synchronization: ISIS 36

    Enabling LDP Auto-Configuration for a Specified OSPF Instance 37

    Enabling LDP Auto-Configuration in an Area for a Specified OSPF Instance 39

    Disabling LDP Auto-Configuration 40

    Configuring LDP Nonstop Routing 41

    Configuring LDP Downstream on Demand mode 42

    Configuration Examples for Implementing MPLS LDP 43

    Configuring LDP with Graceful Restart: Example 43

    Configuring LDP Discovery: Example 43

    Configuring LDP Link: Example 44

    Configuring LDP Discovery for Targeted Hellos: Example 44

    Configuring Label Advertisement (Outbound Filtering): Example 44

    Configuring LDP Neighbors: Example 45

    Configuring LDP Forwarding: Example 45

    Configuring LDP Nonstop Forwarding with Graceful Restart: Example 46

    Configuring Label Acceptance (Inbound Filtering): Example 46

    Configuring Local Label Allocation Control: Example 47

    Configuring LDP Session Protection: Example 47

    Configuring LDP IGP Synchronization—OSPF: Example 47

    Configuring LDP IGP Synchronization—ISIS: Example 47

    Configuring LDP Auto-Configuration: Example 48

    MPLS Configuration Guide for Cisco NCS 6000 Series Routers, Release 5.2.x iv

    Contents

  • Configure IP LDP Fast Reroute Loop Free Alternate: Examples 48

    Verify IP LDP Fast Reroute Loop Free Alternate: Example 50

    Additional References 52

    C H A P T E R 3 Implementing RSVP for MPLS-TE 55

    Prerequisites for Implementing RSVP for MPLS-TE 55

    Information About Implementing RSVP for MPLS-TE 56

    Overview of RSVP for MPLS-TE 56

    LSP Setup 56

    High Availability 57

    Graceful Restart 57

    Graceful Restart: Standard and Interface-Based 58

    Graceful Restart: Figure 59

    ACL-based Prefix Filtering 60

    RSVP MIB 60

    Information About Implementing RSVP Authentication 61

    RSVP Authentication Functions 61

    RSVP Authentication Design 61

    Global, Interface, and Neighbor Authentication Modes 62

    Security Association 63

    Key-source Key-chain 64

    Guidelines for Window-Size and Out-of-Sequence Messages 65

    Caveats for Out-of-Sequence 65

    How to Implement RSVP 65

    Configuring Traffic Engineering Tunnel Bandwidth 66

    Confirming DiffServ-TE Bandwidth 66

    Enabling Graceful Restart 67

    Configuring ACL-based Prefix Filtering 68

    Configuring ACLs for Prefix Filtering 68

    Configuring RSVP Packet Dropping 69

    Verifying RSVP Configuration 70

    Enabling RSVP Traps 73

    How to Implement RSVP Authentication 74

    Configuring Global Configuration Mode RSVP Authentication 75

    Enabling RSVP Authentication Using the Keychain in Global Configuration Mode 75

    MPLS Configuration Guide for Cisco NCS 6000 Series Routers, Release 5.2.x v

    Contents

  • Configuring a Lifetime for RSVP Authentication in Global Configuration Mode 76

    Configuring the Window Size for RSVP Authentication in Global Configuration

    Mode 76

    Configuring an Interface for RSVP Authentication 77

    Specifying the RSVP Authentication Keychain in Interface Mode 77

    Configuring a Lifetime for an Interface for RSVP Authentication 78

    Configuring the Window Size for an Interface for RSVP Authentication 80

    Configuring RSVP Neighbor Authentication 81

    Specifying the Keychain for RSVP Neighbor Authentication 81

    Configuring a Lifetime for RSVP Neighbor Authentication 82

    Configuring the Window Size for RSVP Neighbor Authentication 83

    Verifying the Details of the RSVP Authentication 84

    Eliminating Security Associations for RSVP Authentication 84

    Configuration Examples for RSVP 84

    Bandwidth Configuration (Prestandard): Example 85

    Bandwidth Configuration (MAM): Example 85

    Bandwidth Configuration (RDM): Example 85

    Refresh Reduction and Reliable Messaging Configuration: Examples 85

    Refresh Interval and the Number of Refresh Messages Configuration: Example 86

    Retransmit Time Used in Reliable Messaging Configuration: Example 86

    Acknowledgement Times Configuration: Example 86

    Summary Refresh Message Size Configuration: Example 86

    Disable Refresh Reduction: Example 86

    Configure Graceful Restart: Examples 87

    Enable Graceful Restart: Example 87

    Enable Interface-Based Graceful Restart: Example 87

    Change the Restart-Time: Example 87

    Change the Hello Interval: Example 87

    Configure ACL-based Prefix Filtering: Example 88

    Set DSCP for RSVP Packets: Example 88

    Enable RSVP Traps: Example 88

    Configuration Examples for RSVP Authentication 89

    RSVP Authentication Global Configuration Mode: Example 89

    RSVP Authenticatio

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