Technology - IP Routing & Addressing Crisis 6 - APT & Ivip

Synopsis

We discuss and compare APT (A Practical Transit mapping service) and Ivip (Internet Vastly Improved Plumbing) which together with LISP are the major proposals for a new routing and addressing architecture to provide multihoming, traffic engineering and portability for end-user networks without directly involving the BGP routing system.

Table of Contents

• 1. SynopsiS
• 2. APT
  • 2.1 BGP for mapping distribution
  • 2.2 ITRs and Default Mappers
• 3. Ivip
  • 3.1.1 Functional elements
  • 4. Challenges for all proposals
  • 4.2 Mobility
  • 4.3 Security and robustness
  • 4.4 Tunneling overhead
    • 4.4.1 IP-in-IP and UDP encapsulation
    • 4.4.2 Overhead for short packets
  • 4.5 Maximum Transmission Unit and fragmentation
    • 4.5.1 IPv4 fragmentation and reassembly
    • 4.5.2 RFC 1191 Path MTU Discovery
    • 4.5.3 Sprite-mtu
    • 4.5.4 RFC 4821 PMTUD
    • 4.5.5 IPTM
• 5. Related reports