3HE10790AAAATQZZA01_V1_7450 ESS 7750 SR and 7950 XRS MPLS Guide R14.0.R1.pdf - MPLS GUIDE RELEASE 14.0.R1 Alcatel-Lucent 7450 ETHERNET SERVICE SWITCH

3HE10790AAAATQZZA01_V1_7450 ESS 7750 SR and 7950 XRS MPLS Guide R14.0.R1.pdf

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Unformatted text preview: MPLS GUIDE RELEASE 14.0.R1 Alcatel-Lucent 7450 ETHERNET SERVICE SWITCH 7750 SERVICE ROUTER 7950 EXTENSIBLE ROUTING SYSTEM MPLS GUIDE RELEASE 14.0.R1 Alcatel-Lucent – Proprietary & Confidential Contains proprietary/trade secret information which is the property of Alcatel-Lucent. Not to be made available to, or copied or used by anyone who is not an employee of Alcatel-Lucent except when there is a valid nondisclosure agreement in place which covers such information and contains appropriate non-disclosure and limited use obligations. Copyright 2016 © Alcatel-Lucent. All rights reserved. Alcatel-Lucent assumes no responsibility for the accuracy of the information presented, which is subject to change without notice. Alcatel, Lucent, Alcatel-Lucent and the Alcatel-Lucent logo are trademarks of Alcatel-Lucent. All other trademarks are the property of their respective owners. Copyright 2016 Alcatel-Lucent. All rights reserved. Disclaimers Alcatel-Lucent products are intended for commercial uses. Without the appropriate network design engineering, they must not be sold, licensed or otherwise distributed for use in any hazardous environments requiring fail-safe performance, such as in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, direct life-support machines, or weapons systems, in which the failure of products could lead directly to death, personal injury, or severe physical or environmental damage. The customer hereby agrees that the use, sale, license or other distribution of the products for any such application without the prior written consent of AlcatelLucent, shall be at the customer's sole risk. The customer hereby agrees to defend and hold Alcatel-Lucent harmless from any claims for loss, cost, damage, expense or liability that may arise out of or in connection with the use, sale, license or other distribution of the products in such applications. This document may contain information regarding the use and installation of non-Alcatel-Lucent products. Please note that this information is provided as a courtesy to assist you. While Alcatel-Lucent tries to ensure that this information accurately reflects information provided by the supplier, please refer to the materials provided with any non-Alcatel-Lucent product and contact the supplier for confirmation. Alcatel-Lucent assumes no responsibility or liability for incorrect or incomplete information provided about non-Alcatel-Lucent products. However, this does not constitute a representation or warranty. The warranties provided for Alcatel-Lucent products, if any, are set forth in contractual documentation entered into by Alcatel-Lucent and its customers. This document was originally written in English. If there is any conflict or inconsistency between the English version and any other version of a document, the English version shall prevail. Table of Contents Getting Started...................................................................................................................................... 13 About This Guide................................................................................................................................................13 Alcatel-Lucent Router Configuration Process.....................................................................................................13 MPLS and RSVP .................................................................................................................................. 15 In This Chapter ...................................................................................................................................................15 MPLS..................................................................................................................................................................16 MPLS Label Stack.........................................................................................................................................17 Label Values ............................................................................................................................................18 MPLS Entropy Label and Hash Label ...........................................................................................................19 Inserting and Processing the Entropy Label ............................................................................................21 Egress LER ..............................................................................................................................................22 Mapping Entropy Label and Entropy Label Capability at LSP Stitching Points........................................23 Entropy Label on OAM Packets ...............................................................................................................23 Label Switching Routers................................................................................................................................23 LSP Types................................................................................................................................................24 Bidirectional Forwarding Detection for MPLS LSPs ......................................................................................25 Bootstrapping the BFD Session ...............................................................................................................26 LSP BFD Configuration ............................................................................................................................26 Enabling and Implementing Limits for LSP BFD on a Node ....................................................................27 BFD Configuration on RSVP-TE LSPs ....................................................................................................27 MPLS Facility Bypass Method of MPLS Fast Re-Route (FRR)................................................................29 Manual Bypass LSP .................................................................................................................................29 Uniform FRR Failover Time ....................................................................................................................33 MPLS/RSVP on Broadcast Interface .......................................................................................................33 Automatic Bandwidth Allocation for RSVP LSPs .....................................................................................34 RSVP..................................................................................................................................................................42 Using RSVP for MPLS ..................................................................................................................................44 RSVP Traffic Engineering Extensions for MPLS......................................................................................45 Hello Protocol ...........................................................................................................................................45 MD5 Authentication of RSVP Interface ....................................................................................................45 Configuring Authentication using Keychains ............................................................................................46 Reservation Styles ........................................................................................................................................47 RSVP Message Pacing ............................................................................................................................48 RSVP Overhead Refresh Reduction .............................................................................................................48 RSVP Graceful Restart Helper ......................................................................................................................49 Enhancements to RSVP control plane congestion control ............................................................................49 RSVP LSP Statistics .....................................................................................................................................50 P2MP RSVP-TE LSP Statistics .....................................................................................................................51 Configuring RSVP P2MP LSP Egress Statistics ......................................................................................52 Configuring RSVP P2MP LSP Ingress Statistics .....................................................................................53 Configuring Implicit Null ...........................................................................................................................54 Using Unnumbered Point-to-Point Interface in RSVP ...................................................................................55 Operation of RSVP FRR Facility Backup over Unnumbered Interface ....................................................57 MPLS Transport Profile ......................................................................................................................................58 MPLS-TP Model ............................................................................................................................................59 MPLS Guide 3 Table of Contents MPLS-TP Provider Edge and Gateway .........................................................................................................60 VLL Services ............................................................................................................................................60 Spoke-SDP Termination ..........................................................................................................................61 MPLS-TP LSR ...............................................................................................................................................63 Detailed Descriptions of MPLS-TP ................................................................................................................63 MPLS-TP LSPs ........................................................................................................................................63 MPLS-TP on Pseudowires .......................................................................................................................64 MPLS-TP Maintenance Identifiers.................................................................................................................64 Generic Associated Channel....................................................................................................................68 MPLS-TP Operations, Administration and Maintenance (OAM) ..............................................................69 PW Control Channel Status Notifications (Static Pseudowire Status Signaling)......................................73 PW Control Channel Status Request Mechanism ...................................................................................75 Pseudowire Redundancy and Active / Standby Dual Homing .................................................................75 Lock Instruct and Loopback for MPLS-TP Pseudowires ..........................................................................76 MPLS-TP LSP Protection.........................................................................................................................77 Switching Static MPLS-TP to Dynamic T-LDP Signaled PWs ......................................................................80 Alarm Indication Signal (AIS) ........................................................................................................................81 Configuring MPLS-TP ..................................................................................................................................82 Configuration Overview ............................................................................................................................83 Node-Wide MPLS-TP Parameter Configuration ......................................................................................83 Node-Wide MPLS-TP Identifier Configuration .........................................................................................84 Static LSP and Pseudowire (VC) Label and Tunnel Ranges ...................................................................85 Interface Configuration for MPLS-TP .......................................................................................................86 LER Configuration for MPLS-TP ..............................................................................................................88 Intermediate LSR Configuration for MPLS-TP LSPs ...............................................................................95 MPLS-TP Show Commands .........................................................................................................................96 Static MPLS Labels ..................................................................................................................................96 MPLS-TP Tunnel Configuration ...............................................................................................................96 MPLS-TP Path configuration ...................................................................................................................98 MPLS-TP Protection ..............................................................................................................................101 MPLS TP Node Configuration ................................................................................................................102 MPLS-TP Interfaces ...............................................................................................................................104 MPLS-TP Debug Commands .....................................................................................................................104 Traffic Engineering ...........................................................................................................................................106 TE Metric (IS-IS and OSPF) ........................................................................................................................107 Admin Group Support on Facility Bypass Backup LSP ...............................................................................107 Procedures at Head-End Node ..............................................................................................................108 Procedures at PLR Node .......................................................................................................................108 Diff-Serv Traffic Engineering .......................................................................................................................110 Mapping of Traffic to a Diff-Serv LSP.....................................................................................................111 Admission Control of Classes ................................................................................................................111 RSVP Control Plane Extensions ............................................................................................................116 IGP Extensions ......................................................................................................................................116 Diff-Serv TE Configuration and Operation .............................................................................................116 Diff-Serv TE LSP Class Type Change under Failure ..................................................................................120 LSP Primary Path Retry Procedures......................................................................................................120 Bandwidth Sharing Across Class Types ................................................................................................123 Downgrading the CT of Bandwidth Sharing LSP Paths .........................................................................124 Upgrading the CT of Bandwidth Sharing LSP Paths..............................................................................125 4 MPLS Guide Table of Contents Advanced MPLS/RSVP Features.....................................................................................................................125 Extending RSVP LSP to use Loopback Interfaces Other Than router-id ....................................................126 LSP Path Change........................................................................................................................................127 Manual LSP Path Switch .............................................................................................................................128 Make-Before-Break (MBB) Procedures for LSP/Path Parameter Configuration Change ...........................128 Automatic Creation of RSVP-TE LSP Mesh................................................................................................129 RSVP-TE LSP Shortcut for IGP Resolution ................................................................................................131 Using LSP Relative Metric with IGP Shortcut ........................................................................................133 ECMP Considerations ............................................................................................................................134 Handling of Control Packets...................................................................................................................134 Forwarding Adjacency............................................................................................................................135 LDP Forwarding over IGP Shortcut........................................................................................................136 Handling of Multicast Packets ................................................................................................................136 RSVP-TE LSP Signaling using LSP Template ............................................................................................138 Shared Risk Link Groups ............................................................................................................................138 Enabling Disjoint Backup Paths .............................................................................................................139 SRLG Penalty Weights for Detour and Bypass LSPs ............................................................................141 Static Configurations of SRLG Memberships.........................................................................................142 TE Graceful Shutdown ................................................................................................................................144 Soft Preemption of Diff-Serv RSVP LSP .....................................................................................................144 Least-Fill Bandwidth Rule in CSPF ECMP Selection ..................................................................................144 Inter-Area TE LSP (ERO Expansion Method) .............................................................................................145 Area Border Node FRR Protection for Inter-Area LSP...........................................................................145 Inter-Area LSP support of OSPF Virtual Links .......................................................................................149 Area Border Node FRR Protection for Inter-Area LSP...........................................................................149 Automatic Creation of...
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  • Fall '19
  • Configuration management, Multiprotocol Label Switching, Alcatel-Lucent, TE LSP

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