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Nokia 7705 - User Manual

Nokia 7705
594 pages
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© 2022 Nokia.
Use subject to Terms available at: www.nokia.com
7705 SERVICE AGGREGATION
ROUTER | RELEASE 22.10.R1
MPLS Guide
3HE 18686 AAAB TQZZA
Edition: 01
October 2022
MPLS Guide

Table of Contents

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Nokia 7705 Specifications

General IconGeneral
BrandNokia
Model7705
CategoryNetwork Router
LanguageEnglish

Summary

1 Preface

1.1 About This Guide

Describes services and protocol support for MPLS and RSVP-TE on the 7705 SAR.

1.1.1 Audience

Intended for network administrators with networking principles knowledge.

1.1.2 Technical Support

Provides information on contacting Nokia technical support for assistance and documentation updates.

2 7705 SAR MPLS Configuration Process

3 MPLS and RSVP-TE

3.1 Overview

Provides information to configure MPLS and RSVP-TE for the 7705 SAR.

3.2 MPLS

Describes Multiprotocol Label Switching (MPLS) as a label switching technology for connection-oriented paths.

3.2.1 Traffic Engineering for MPLS

Explains how TE maximizes throughput and minimizes delay by routing traffic efficiently.

3.2.5 LSP Types

Details the supported LSP types: static LSPs and signaled LSPs (explicit-path, constrained-path).

3.3 RSVP and RSVP-TE

Introduces Resource Reservation Protocol (RSVP) and its traffic engineering extension (RSVP-TE).

3.4 RSVP-TE Signaling

Introduces RSVP-TE-based signaling for dynamically establishing tunnels.

3.5 LSP Redundancy

Covers protecting primary LSPs with secondary LSPs and supports shared risk link groups (SRLGs).

3.7 RSVP-TE Fast Reroute (FRR)

Provides a mechanism to protect against RSVP-TE signaled LSP failures by reacting to failures as soon as possible.

3.10 RSVP-TE Support for Unnumbered Interfaces

Explains how unnumbered interfaces can be used via RSVP-TE for signaling traffic engineering LSPs.

3.11 PCEP Support for RSVP-TE LSPs

Covers Path Computation Element Communication Protocol (PCEP) support for PCC capabilities for RSVP-TE LSPs.

3.12 Segment Routing with Traffic Engineering (SR-TE)

Discusses SR-TE's ability to perform shortest path routing and source routing using abstract segments.

3.12.2 SR-TE LSP Instantiation

Explains how SR-TE LSP path can be computed by the router or an external TE controller.

3.15 MPLS and RSVP-TE Configuration Process Overview

Displays the process for configuring MPLS and RSVP-TE parameters.

3.17 Configuring MPLS and RSVP-TE with CLI

Offers information to configure MPLS and RSVP-TE using the CLI.

3.18 MPLS Configuration Overview

Explains how MPLS enables routers to forward traffic based on labels.

3.19 Basic MPLS Configuration

Provides MPLS configuration information and examples.

3.20 Common Configuration Tasks

Gives an overview of common configuration tasks for MPLS and provides CLI commands.

3.21 MPLS Configuration Management Tasks

Discusses MPLS configuration management tasks.

3.22 RSVP-TE Configuration Management Tasks

Discusses RSVP-TE configuration management tasks.

3.23 Configuring and Operating SR-TE

Provides information on configuring and operating Segment Routing with Traffic Engineering (SR-TE) LSP.

3.23.1 SR-TE Configuration Prerequisites

Outlines prerequisite parameters for SR-TE configuration.

3.23.2 SR-TE LSP Configuration Overview

Details configuring an SR-TE LSP using CLI.

3.23.3 Configuring Path Computation and Control for SR-TE LSPs

Explains configuring path computation requests and updates to PCE for SR-TE LSPs.

3.23.5 Configuring Adjacency SID Parameters

Explains configuring adjacency hold timers for LFA or remote LFA backup.

3.23.6 Configuring PCC-controlled, PCE-computed, and PCE-controlled SR-TE LSPs

Shows PCEP PCC parameter configuration for PCE peering.

4 PCEP

4.1 Introduction to the Path Computation Element (PCE) Communication Protocol (PCEP)

Introduces PCEP as a protocol for communication between WAN SDN controller and network elements.

4.2 Base Implementation of Path Computation Elements (PCE)

Describes the base PCEP implementation using RFC 5440 and its main functions.

4.3 PCEP Session Establishment and Maintenance

Details PCEP operation over TCP, session establishment, and maintenance.

4.4 PCEP Parameters

Covers user-configurable PCEP parameters on the PCC, including timers and message rates.

4.4.1 PCC Configuration

Lists PCC parameters that can be modified while the PCEP session is operational.

4.4.2 Stateful PCE

Explains the main function of stateful PCE for synchronizing LSP state between PCC and PCE.

4.5 PCEP Support for RSVP-TE LSPs

Describes PCEP support for PCC-initiated RSVP-TE LSPs.

4.5.1 RSVP-TE LSP Configuration for a PCC Router

Lists CLI commands to configure RSVP-TE LSPs in a router acting as a PCEP Client (PCC).

4.5.2 Behavior of the LSP Path Update

Details how PCC delegates control of RSVP-TE LSP to PCE for path updates.

4.5.3 Behavior of LSP MBB

Covers MBB support for parameter configuration changes, including PCEP-related commands.

4.6 LSP Path Diversity and Bidirectionality Constraints

Explains PCE path profile usage for requesting path diversity or disjointness for LSPs.

4.7 NSP and VSR-NRC PCE Redundancy

Discusses NSP and VSR-NRC PCE redundancy features.

4.7.1 Feature Configuration

Details CLI command parameters for configuring PCEP session to standby PCE peer.

4.7.2 NSP Ecosystem Redundancy

Illustrates NSP ecosystem and redundancy across separate sites.

5 Label Distribution Protocol

5.1 Label Distribution Protocol

Explains LDP for distributing labels in non-traffic-engineered applications.

5.1.1 LDP and MPLS

Discusses LDP performing dynamic label distribution in MPLS environments.

5.1.2 LDP Architecture

Explains LDP's processes for PDU transmission, timers, and state machines.

5.1.3 LDP Subsystem Interrelationships

Shows relationships between LDP subsystems and other 7705 SAR subsystems.

5.1.4 Execution Flow

Explains LDP activity limited to service-related signaling.

5.1.5 Label Exchange

Explains label exchange initiated by the service manager.

5.1.6 LDP Filters

Covers inbound and outbound LDP label binding filtering.

5.1.7 LDP FEC Statistics

Allows operators to monitor traffic forwarding using LDP SDPs.

5.1.8 Multi-area and Multi-instance Extensions to LDP

Discusses inter-area LSPs required for MPLS connectivity between PE devices.

5.1.9 ECMP Support for LDP

Explains ECMP support for LDP load balancing services using LDP-based LSPs.

5.1.13 LDP Fast Reroute (FRR)

Provides local protection for an LDP FEC by precalculating and downloading primary and backup NHLFEs.

5.1.14 LDP-to-Segment Routing Stitching for IPv4;32 Prefixes (IS-IS)

Provides stitching between LDP FEC and SR node SID route for IPv4 /32 IS-IS prefix.

5.2 LDP Point-to-Multipoint Support

States that 7705 SAR supports point-to-multipoint mLDP.

5.3 Multicast LDP Fast Upstream Switchover

Allows downstream LSR to perform fast switchover to another upstream LSR.

5.4 LDP IPv6

States that 7705 SAR extends LDP control plane and data plane for LDP IPv6 adjacencies and sessions.

5.4.1 Link LDP

Explains LDP IPv6 using 128-bit LSR ID and Hello packets.

5.4.3 FEC Resolution

Describes LDP advertising and withdrawing IPv6 addresses and FECs.

5.4.4 LDP Session Capabilities

Covers LDP advertising FEC types over IPv4 or IPv6 sessions.

5.4.5 LDP Adjacency Capabilities

Defines adjacency-level FEC-type capability advertisement.

5.4.6 IP Address and FEC Distribution

Describes IP address and FEC distribution when LDP LSR initializes session.

5.4.7 IGP and Static Route Synchronization with LDP

Modifies IGP-LDP and static route-to-LDP synchronization features for dual-stack IPv4 or IPv6 LDP interface.

5.4.8 BFD Operation

Explains BFD operation over LDP interface tracking IPv4 and IPv6 prefixes and LDP peer address.

5.4.9 Services Using SDP with an LDP IPv6 FEC

States that 7705 SAR supports SDPs of type LDP with far-end options using IPv6 addresses.

5.4.10 Mirror Services

Covers configuring spoke SDP bound to LDP IPv6 LSP for forwarding mirrored packets.

5.4.11 OAM Support with LDP IPv6

States that MPLS OAM tools LSP ping and LSP trace can operate with LDP IPv6.

5.4.12 Interoperability

Discusses interoperability with implementations compliant with RFC 5036 for IPv4 LDP control plane.

5.4.13 Upgrading from IPv4 to IPv6

Recommends steps for smooth transition from IPv4 to IPv6.

5.5 LDP Process Overview

Displays the process to provision basic LDP parameters.

5.6 Configuration Notes

Refers to 7705 SAR Services Guide for signaling information.

5.7 Configuring LDP with CLI

Provides information to configure LDP using the command line interface.

5.8 LDP Configuration Overview

Explains LDP instantiation and default parameters.

5.9 Basic LDP Configuration

Provides LDP configuration information and examples of common tasks.

5.10 Common Configuration Tasks

Gives an overview of common configuration tasks to configure LDP.

5.10.1 Enabling LDP

States LDP must be enabled for the protocol to be active, and MPLS must also be enabled.

5.10.2 Configuring Graceful Restart Helper Parameters

Covers configuring graceful restart helper parameters for LDP.

5.10.3 Applying Import and Export Policies

Explains inbound and outbound filtering policies for label bindings.

5.10.4 Configuring Interface Parameters

Details configuring LDP interface parameters.

5.10.5 Specifying Targeted Session Parameters

Covers specifying targeted session parameters for LDP.

5.10.6 Specifying Peer Parameters

Explains specifying LDP peer parameters.

5.10.8 Configuring LDP Support for LDP-to-SR Stitching

Explains configuring export-tunnel-table for LDP-to-SR stitching.

5.10.9 Enabling LDP Signaling and Services

Covers enabling LDP signaling and services for targeted sessions.

5.11 LDP Configuration Management Tasks

Discusses LDP configuration management tasks.

5.11.1 Disabling LDP

Explains disabling LDP protocol and reverting parameters to defaults.

5.11.2 Modifying Targeted Session Parameters

Covers modifying targeted session parameters.

5.11.3 Modifying Interface Parameters

Details modifying LDP interface parameters.

5.12 LDP Command Reference

Provides LDP command reference.

5.12.1 Command Hierarchies

Lists LDP command hierarchies.

5.12.1.1 LDP Commands

Lists global, interface, session, and peer LDP commands.

5.12.1.2 Show Commands

Lists show commands for LDP discovery, FEC egress stats, FEC originate, interface, and session.

5.12.2 Command Descriptions

Provides descriptions for LDP configuration, show, monitor, clear, and debug commands.

5.12.2.1 Configuration Commands (LDP)

Lists generic, global, interface, session, and targeted session configuration commands.

5.12.2.2 LDP Global Commands

Lists LDP global commands like ldp and aggregate-prefix-match.

5.12.2.3 Interface Parameters Commands

Details LDP interface parameters commands.

5.12.2.4 Session Parameters Commands

Lists LDP session parameters commands.

5.12.2.5 Targeted Session Commands

Covers LDP targeted session commands.

5.12.2.2 Show Commands (LDP)

Lists show commands for LDP discovery.

5.12.2.2.1 Show Router LDP Commands

Lists show commands for LDP discovery, FEC egress stats, FEC originate, interface, and session.

5.12.2.2.2 Show LDP Bindings Commands

Lists show commands for LDP bindings.

6 List of Acronyms

7 Supported Standards and Protocols

Security Standards

Lists security standards compliance for 7705 SAR.

Telecom Standards

Lists telecom standards compliance for 7705 SAR.

Protocol Support

Lists supported protocols including ATM, BFD, BGP, DHCP, Differentiated Services, etc.

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