MPLS Fundamentals

ISBN-10: 1587051974

ISBN-13: 9781587051975

Edition: 2007

Authors: Luc De Ghein
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Description: A comprehensive introduction to all facets of MPLS theory and practice Helps networking professionals choose the suitable MPLS application and design for their network Provides MPLS theory and relates to basic IOS configuration examples The Fundamentals Series from Cisco Press launches the basis to readers for understanding the purpose, application, and management of technologies MPLS has emerged as the new networking layer for service providers throughout the world. For many service providers and enterprises MPLS is a way of delivering new applications on their IP networks, while consolidating data and voice networks. MPLS has grown to be the new default network layer for service providers and is finding its way into enterprise networks as well. This book focuses on the building blocks of MPLS (architecture, forwarding packets, LDP, MPLS and QoS, CEF, etc.). This book also reviews the different MPLS applications (MPLS VPN, MPLS Traffic Engineering, Carrying IPv6 over MPLS, AToM, VPLS, MPLS OAM etc.). You will get a comprehensive overview of all the aspects of MPLS, including the building blocks, its applications, troubleshooting and a perspective on the future of MPLS.

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Book details

List price: $79.00
Copyright year: 2007
Publisher: Cisco Press
Publication date: 11/21/2006
Binding: Paperback
Pages: 672
Size: 7.50" wide x 9.25" long x 1.50" tall
Weight: 2.860
Language: English

Luc De Ghein, CCIE No. 1897, is a Customer Support Engineer in the escalation team for Cisco Systems in EMEA. Luc has been in the networking industry since 1994 and has been with Cisco since 1996. His responsibilities for the past six and a half years include the mediation of challenging networking problems, as well as providing education for routing technologies, MPLS, and network design. Since 2000, Luc has specialized in the area of MPLS technologies. Before moving to his current position, Luc was a TAC engineer specializing in routing.

Introduction
Fundamentals of MPLS
The Evolution of MPLS
Definition of MPLSPre-MPLS Protocols
Benefits of MPLS Bogus Benefit
The Use of One Unified Network Infrastructure Better IP over ATM Integration
BGP-Free Core
Peer-to-Peer VPN Model Versus Overlay VPN Model0
Overlay VPN Model0
Peer-to-Peer VPN Model Optimal Traffic Flow
Traffic Engineering
History of MPLS in Cisco IOS Tag Switching to MPLS
MPLS Applications
Summary
Chapter Review Questions
MPLS Architecture
Introducing MPLS Labels
Label Stacking Encoding of MPLS
MPLS and the OSI Reference Model
Label Switch Router
Label Switched Path
Forwarding Equivalence Class
Label Distribution Piggyback the Labels on an Existing IP
Routing Protocol
Running a Separate Protocol for Label
Distribution Label
Distribution with LDP
Label Forwarding Instance Base
MPLS Payload
MPLS Label Spaces
Different MPLS Modes
Label Distribution Modes
Label Retention Modes
LSP Control Modes
Summary
Chapter Review Questions
Forwarding Labeled Packets
Forwarding of Labeled Packets
Label Operation
IP Lookup Versus Label
Lookup Load Balancing Labeled Packets Unknown Label
Reserved Labels
Implicit NULL Label
Explicit NULL Label
Router Alert Label
OAM Alert Label
Unreserved Labels
TTL Behavior of Labeled Packets
TTL Behavior in the Case of IP-to-Label or Label-to-IP
TTL Behavior in the Case of Label-to-Label TTL Expiration
MPLS MTU
MPLS
MTU Command Giant and Baby Giant Frames
Giant Frames on Switches
MPLS Maximum Receive Unit
Fragmentation of MPLS Packets
Path MTU Discovery
Summary
Chapter Review Questions
Label Distribution Protocol
LDP Overview
LDP Operation
The Discovery of LSRs That Are Running LDP
LDP Session Establishment and Maintenance
Number of LDP Sessions
Advertising of Label Mappings
Label Withdrawing Housekeeping by Means of Notification
Targeted LDP Session
LDP Authentication
Controlling the Advertisement of Labels via LDP
MPLS LDP Inbound Label Binding Filtering
LDP Autoconfiguration
MPLS LDP-IGP Synchronization
How MPLS LDP-IGP Synchronization
Works MPLS
LDP-IGP Synchronization Configuration
MPLS LDP Session Protection
Summary
Chapter Review Questions
MPLS and ATM Architecture
Brief Introduction to ATM
Label Encoding
Label Advertisement Downstream-on-Demand Label
Advertisement LDP Control Mode for ATM
LDP for LC-ATM Label Space Loop Detection by LDP
Loop Detection by Hop Count TLV
TTL Manipulation Loop Detection by Path Vector TLV
LDP Address Messages Blocking Label Requests
Aggregate Labels
VC-Merge
Non MPLS-Aware ATM Switches
Label Switch Controller
Multi-Virtual Circuit Tagged Bit Rate MPLS CoS
Frame Mode ATM
Reducing the Number of LVCs
Summary
Chapter Review Questions
Cisco Express Forwarding
Overview of Cisco IOS Switching Methods
Process Switching
Fast Switching
CEF Switching
Why Is CEF Needed in MPLS Networks?
What Are the Components of CEF?
The Adjacency Table The CEF Table
Operation of CEF
Distributed CEF (DCEF)
CEF Switching Packets in Hardware
Load Balancing in CEF
Unequal Cost Load Balancing
Labeling IP Packets by CEF
Load Balancing Labeled Packets
Troubleshooting CEF
Summary
Chapter Review Questions
Advanced MPLS Topics
MPLS VPN
Introduction to MPLS VPN
Definition of a VPN
VPN Models
MPLS VPN Model
Architectural Overview of MPLS VPN
Virtual Routing Forwarding RD RTs
VPNv4 Route Propagation in the MPLS
VPN Network Packet Forwarding in an MPLS
VPN Network BGP
BGP Multiprotocol Extensions and Capabilities
BGP Extended Community: RT VPNv4 Routes BGP
Carrying the Label RRs
RR Group
BGP Route Selection
BGP Multipath
Using Multiple RDs
Packet Forwarding
PE-CE Routing Protocols
Connected Routes
Static Routing RIP Version 2 OSPF
OSPF VRF Configuration
OSPF Metric Propagation BGP Extended Communities for OSPF
OSPF Network Design Sham Link Down Bit and Domain Tag EI
GRP Configuration
Pre-Bestpath POI EI
GRP PE-CE with Backdoor Links
IS-IS eBGP Autonomous System Override allowas-in
Hub-and-Spoke
SOOVRF Access
Internet Access
Internet in a VPN
Internet Access Through the Global Routing Table
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