MPLS: Understanding

Course Code: GEN5026      Days: 2
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England
Berkshire
Windsor (SL4) 09/10/08 £ 945
Windsor (SL4) 24/11/08 £ 945
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Course Overview

The objective of this course is to Introduce the concepts, vocabulary and terminology associated with MPLS. The course is presented as a mixture of discussion and teaching sessions.

Audience

Technical Specialists, Consultants, Designers and Implementors who need a good understanding of MPLS and how it could be deployed.

Skills Gained

  • Introduce the concepts, vocabulary and terminology associated with MPLS.
  • Explain how MPLS provides QoS in an IP environment.
  • Understand how labels are distributed through LDP.
  • Describe the main message and packets used by MPLS.
  • Discuss common deployments of MPLS.
  • Understand how MPLS interacts with other technologies such as ATM, Frame Relay, etc.
  • Understand how MPLS can be used for VPNs and Traffic Engineering
  • Describe generalised MPLS (GMPLS)

Prerequisites

Internetworking with TCP/IP (ETS308) and IP QoS (ETS365).

Course Outline

Setting the Scene

  • What is MPLS?
  • Where has it come from?
    • Toshiba Cell Switch Router
    • IBM's ARIS
    • Ipsilon's IP Switching
    • Cisco's Tag Switching
  • Objectives of MPLS
  • Benefits of MPLS
  • MPLS Standards

MPLS Operation

  • Terminology
  • Basic Operation
  • FECs
    • FEC Aggregation
  • LSPs and Label Stacks
  • LSP Control
  • Ordered
  • Independent
    • Packet Forwarding
    • Routing Issues
    • MPLS Header
  • Label Format
  • Penultimate Pop Hopping
  • Label Merging
  • Multicast Support

Label Distribution Protocol

  • LDP Operation
  • LDP Sessions
  • Label Distribution Methods
    • Downstream Unsolicited
    • Downstream on Demand
  • Label Retention
    • Conservative Label Retention
    • Liberal Label Retention
  • LDP Packet Format
  • LDP Messages
    • Notification
    • Hello
    • Keep Alive
    • Address/Address Withdraw
    • Label Mapping/Label Request
    • Label Withdraw
    • Label Release
  • LDP Message Format
    • TLV Encoding
  • Alternatives to LDP

Cell Mode MPLS

  • ATM Signalling Points
  • MPLS and ATM
  • ATM Label Encapsulation
  • ATM Label Swapping
  • Cell Interleaving
    • VC Merging
    • Downstream-on-Demand
  • Loop Detection
    • Using LDP
    • Using Path Vectors
  • TTL Calculation
  • Cell Mode vs Frame Mode

MPLS and QoS

  • MPLS and Differentiated Services
    • Supporting DiffServ
  • MPLS and RSVP
    • RSVP Support
  • MPLS and ECN

Constraint Based Routing

  • What is CBR?
  • CBR Traffic Parameters
  • Components of CBR
    • CSPF
    • CR-LDP
    • RSVP Extensions
  • Explicit Routing with RSVP
  • Explicit Routing with CR-LDP
  • Path Pre-emption
  • Fast Re-route
  • CR-LDP Messages & TLVs
  • CR-LDP vs RSVP

MPLS Traffic Engineering

  • Why we need it
  • Explicit Routes and CBR
    • Soft & Hard Explicit Routes
  • QoS in Traffic Engineering
  • Constraint Based Fast Re-routing
  • MPLS and VPNs VPN Definition
  • VPN Models
    • Overlay Model
    • Peer Model
  • Typical VPN Hierarchies
  • VPN Packet Forwarding
  • VPN-IP Addresses
  • BGP VPN Extensions

GMPLS

  • What is it?
  • Why do we need it?
  • MPLS and Optical Networking
    • Basic Operation
    • Add/Drop Optical Multiplexors
    • DWDM
    • Label Switching

Implementing MPLS

  • Where to Use MPLS?
  • MPLS and VPNs
  • Voice over MPLS
  • MPLS and Ethernet
  • MPLS and the Martini drafts
  • MPLS and the Kompella Drafts
  • Implementation Challenges
  • Examples
  • MPLS Maintenance Framework
    • Routing Recovery
    • Protection Switching
    • Post Recovery
    • Maintenance Issues

Follow On Courses

MPLS VPNs (ETS384)


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