Philosophy of

1
Philosophy of REALIPv6 network operation

• Shin Miyakawa
• NTT Multimedia Communications Laboratories
• Palo Alto, California, USA
• IPv6 summit in Osaka Japan / December 2000

2
Speakers position

• As an IPv6 fundamentalist purposely
• This presentation does not represent companys
  views nor opinions

3
What is the best practice to operate IPv6 network
?

• We need to be careful about
• Available implementation
• Legacy
• Standardization
• We need to think about plans despite unclear
  situation
• For now, the next year and few years later
• We must have concrete philosophy.

4
Philosophy of the design

• IMHO, the concept of the design of IPv6 is
• Big enough address space with simple structure
• that provides us with
• Original End-to-End environment
• A lot of benefits from NAT free network
• Fast processing

It is so simple and functional enough.
5
Philosophy of the operation

• Same as design
• should be just SIMPLE so that its
• IN-EXPENSIVE
• STABLE
• SCALABLE
• Think simple !

6
IPv6 network operation

• Pure IPv6 network Application Gateway(s) to
  IPv4 network is the way to go.
• Routing protocol, E-mail, DNS etc, etc. for v6
  should be on v6.
• Those for v4 should remain on v4.
• dual stack operation???... I suspect...
• Just for edge of the network only where it is
  needed.
• We can not do this for now
• actually we can do this if we use only KAME...
• but anyway within few years

7
Taking care about legacy

• Co-existence with IPv4
• NAT hides usage of private address
• Application GW hides usage of IPv6
• SAMETHING! So, use IPv6 wherever NAT is needed!
• It is painful to add new protocol onto existing
  network
• simply avoid as much as you can
• That is just like put new wine in old bottles
• Create new network and move onto it
• If you need to access legacy, use AGW

8
Operate ISP network and IX

• Logically, we should have separate systems for v4
  and v6
• Note that they can share same hardware and links
• IPv6 network can simulate IPv4 network but not
  vice versa

9
Conclusion

• To design, install and operate IPv6 network,
  lets think SIMPLE to achieve
• IN-EXPENSIVE,
• STABLE and
• SCALABLE network
• Pure IPv6 is the goal. Definitely.
• It seems strange ? But it is!