The Internet “Crisis” - The Transition to IPv6

Bryant Newby

English 5164/26/06

9:30 MWF

Road Map

● Networking background● What is TCP/IP?● IPv4 problems● IPv6● Affect on you?● Transitioning technologies● Questions

Layered Networking

What is a Network Protocol?

● A communications mechanism● Many flavors

IPX/SPX OSPF Big two

● UDP Connectionless

● TCP/IP

Internet: TCP/IP

● Connection oriented● End to end mechanism● Networking layer● “Loaded”

Protocol suite Router configuration End user configuration

Internet Protocol Version 4

● “Fast”● Scalable● Problems:

Complexity Addressing Scheme

● (demo addressing)

Problem

● Finite space 32 bits

● Class allocation schemes● Problem scale (crisis?)

Solution - IPv6

● Grand allocation schemes● New technologies

Neighbor identification QoS

● Reduced Complexity Scalability

● Maturity

Version Comparison

● IPv4 IPv6

Addressing Comparison

IPv4 IPv6

Raw # 2 ̂ 128

In use 1.4 billion

Reserved 1.4 billion

Available 1.4 billion

4.3 billion (2̂ 32)

Does it affect you?

● Installation● Transparency● Research● Test beds● Transition

technologies

Transitioning mechanisms

● 6 to 4● 4 to 6● DTTS● Expensive

Review

● Protocols run computer communication● IPv4 has problems● IPv6 will gradually replace● Transitioning mechanisms will make nearly

transparent● Potential problem● YOU might need to address problem.

Any 1337 Queries?