Abstract
This new Biennial Report covers the Routing and Addressing Problem (ROAP):
Border Gateway Protocol, global BGP routing table, multihomed and transit
routers in the Default Free Zone, exhaustion of fresh IPv4 address space,
Provider Aggregatable (PA) and Provider Independent (PI) address space,
Internet scaling problems, Internet Architecture Board Workshop on Routing and
Addressing (RAWS), Regional Internet Registry (RIR) IPv6 end-user PI space
allocation policy, Route Aggregation, improving IPv4 address space
utilisation, Forwarding Information Base (FIB) technologies, Ternary Content
Addressable Memory (TCAM), TCAM update time and power consumption problems,
Tree-Bitmap Algorithm, Routing Information Base (RIB), BGP stability and
convergence, path hunting, Minimum Route Advertisement Interval (MRAI) Timer,
Flap Damping, Path Length Damping, Root Cause Notification, Ingress Tunnel
Routers (ITRs), Egress Tunnel Routers (ETRs), LISP-NERD, LISP-CONS, eFIT-APT,
Ivip, multihoming service restoration, ‘push' and ‘pull'
approaches to mapping database distribution.
This handbook also contains discussion of:
- Improvements to BGP.
- Locator-ID separation and tunneling protocols.
- Needs of ISPs and end-users requiring portability, multihoming and traffic
engineering.
- Tension between multihoming upstream diversity and route aggregation.
- Comparison of IP-based tunneling locator-ID separation protocols.
- Implications of IP-based solutions for security, packet overhead, Path MTU
(Maximum Transmission Unit) Discovery and packet fragmentation.
- Reachability of from hosts in networks which have not adopted the new
architecture.
Table of Contents
1. TCP, UDP & SCTP
- 1.1 Introduction
- 1.2 TCP/IP packets
- 1.2.1 IPv4 header
- 1.2.2 Routing
- 1.2.3 UDP packet
- 1.2.4 TCP
- 1.3 IP Addresses
- 1.3.1 Overview
- 1.3.2 TCP and UDP port numbers
- 1.3.3 Stream Control Transmission Protocol (SCTP)
- 1.3.4 Network and broadcast address
- 1.4 Transition to IPv6
- 1.4.1 IPv6 islands in an IPv4 sea
- 1.4.2 Dual stack networks
- 1.4.3 Avoiding Network Address Translation (NAT)
- 1.4.4 IPv6 benefits
2. IP Routing & Addressing Crisis
- 2.1 User requirements
- 2.1.1 Introduction
- 2.1.2 Routing and Addressing Problem (ROAP)
- 2.1.3 Needs and desires
- 2.1.4 Route aggregation and address utilisation
- 2.1.5 Multihoming
- 2.2 Forwarding Information Base (FIB)
- 2.2.1 FIB rules
- 2.2.2 Costs and limitations of three FIB technologies
- 2.2.3 The ideal of ‘flat routing'
- 2.3 RIB & BGP
- 2.3.1 Introduction
- 2.3.2 The BGP routing system
- 2.3.3 Routers in the Default Free Zone (DFZ)
- 2.3.4 Routing Information Base (RIB)
- 2.3.5 BGP stability
- 2.4 Goals and BGP solutions
- 2.4.1 Introduction
- 2.4.2 IAB, IETF, IRTF and other organisations
- 2.4.3 Goals and solutions
- 2.4.4 Improving BGP
- 2.5 LISP - Locator-ID-Separation
- 2.5.1 Introduction
- 2.5.2 Postal redirection analogy
- 2.5.3 Locator-Identifier Separation Protocol (LISP)
- 2.6 APT & Ivip
- 2.6.1 APT
- 2.6.2 Ivip Internet Vastly Improved Plumbing (Ivip)
- 2.6.3 Challenges for all proposals
3. Glossary of Abbreviations
EXHIBITS:
- Exhibit 1 - An 8 address TCP/IP subnet
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