Nokia 7705 SAR-W Series - Preface; About This Guide

MPLS Guide
3HE 18686 AAAB TQZZA © 2022 Nokia.
Use subject to Terms available at: www.nokia.com
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Table of Contents
1 Preface...........................................................................................15
1.1 About This Guide.......................................................................................15
1.1.1 Audience....................................................................................................15
1.1.2 Technical Support......................................................................................16
2 7705 SAR MPLS Configuration Process.....................................17
3 MPLS and RSVP-TE......................................................................19
3.1 Overview....................................................................................................20
3.2 MPLS.........................................................................................................21
3.2.1 Traffic Engineering for MPLS ....................................................................21
3.2.1.1 TE Metric and IGP Metric ..........................................................................22
3.2.2 MPLS Label Stack .....................................................................................23
3.2.2.1 Label Values..............................................................................................24
3.2.3 MPLS Entropy Labels................................................................................26
3.2.3.1 Overview of Entropy Labels.......................................................................26
3.2.3.2 Inserting and Processing the Entropy Label..............................................29
3.2.3.3 Entropy Label on OAM Packets ................................................................31
3.2.3.4 Segment Routing Entropy Label and IPSec, ESPI Hashing, and
NGE...........................................................................................................31
3.2.3.5 Entropy Label Configuration ......................................................................31
3.2.4 Label Edge and Label Switch Routers ......................................................33
3.2.5 LSP Types .................................................................................................34
3.3 RSVP and RSVP-TE .................................................................................36
3.3.1 RSVP-TE Overview ...................................................................................36
3.3.1.1 Using RSVP-TE for MPLS.........................................................................38
3.3.1.2 RSVP-TE Extensions for MPLS ................................................................38
3.3.1.3 Hello Protocol ............................................................................................39
3.3.1.4 Authentication............................................................................................40
3.3.1.5 Non-Router ID Addresses as Destinations and Hops ...............................42
3.3.2 RSVP LSP and LDP FEC Statistics ..........................................................43
3.3.2.1 Configuring RSVP LSP Statistics at Ingress LER .....................................44
3.3.2.2 Configuring RSVP LSP Statistics at Egress LER ......................................45
3.3.2.3 Configuring LDP FEC Statistics.................................................................46
3.4 RSVP-TE Signaling ...................................................................................48
3.4.1 General Attributes of RSVP-TE.................................................................48
3.4.1.1 Bidirectional Forwarding Detection............................................................49
3.4.1.2 Timers........................................................................................................49
3.4.1.3 LSP Resignal Limit ....................................................................................50
3.4.1.4 RSVP-TE Message Pacing .......................................................................50
3.4.1.5 RSVP-TE Overhead Refresh Reduction ...................................................51
3.4.1.6 RSVP-TE Reservation Styles ....................................................................52
3.4.1.7 Implicit Null Label ......................................................................................52
3.4.1.8 RSVP-TE Entropy Labels ..........................................................................53
3.5 LSP Redundancy.......................................................................................54