Philosophy Philosophy of of

“REAL”“REAL”IPv6 network operationIPv6 network operation

Shin MiyakawaShin MiyakawaNTT Multimedia Communications LaboratoriesNTT Multimedia Communications Laboratories

Palo Alto, California, USAPalo Alto, California, USA

IPv6 summit in Osaka Japan / December 2000IPv6 summit in Osaka Japan / December 2000

Speaker’s positionSpeaker’s position

As an “IPv6 fundamentalist” purposelyAs an “IPv6 fundamentalist” purposely

This presentation does not represent This presentation does not represent company’s views nor opinionscompany’s views nor opinions

What is the best practice to What is the best practice to operate IPv6 network ?operate IPv6 network ?

We need to be careful aboutWe need to be careful about– Available implementationAvailable implementation– LegacyLegacy– StandardizationStandardization

We need to think about plans despite We need to think about plans despite unclear situationunclear situation– For now, the next year and few years laterFor now, the next year and few years later

We must have concrete philosophy.We must have concrete philosophy.

Philosophy of the designPhilosophy of the design IMHO, the concept of the design of IPv6 is;IMHO, the concept of the design of IPv6 is;

– Big enough address space with simple structureBig enough address space with simple structure– that provides us withthat provides us with

• Original “End-to-End” environmentOriginal “End-to-End” environment• A lot of benefits from NAT free networkA lot of benefits from NAT free network• Fast processingFast processing

It is so simple and functional enough.

Philosophy of the operationPhilosophy of the operation

Same as designSame as design– should be just SIMPLE so that it’sshould be just SIMPLE so that it’s

• IN-EXPENSIVEIN-EXPENSIVE• STABLESTABLE• SCALABLESCALABLE

Think simple !Think simple !

IPv6 network operationIPv6 network operation ““Pure IPv6 network + Application Gateway(s) to IPv4 Pure IPv6 network + Application Gateway(s) to IPv4

network” is the way to go.network” is the way to go.– Routing protocol, E-mail, DNS etc, etc. for v6 should be on Routing protocol, E-mail, DNS etc, etc. for v6 should be on

v6. v6. • Those for v4 should remain on v4.Those for v4 should remain on v4.

– dual stack operation???... I suspect...dual stack operation???... I suspect...• Just for edge of the network only where it is needed.Just for edge of the network only where it is needed.

We can not do this for now We can not do this for now • actually we can do this if we use only KAME...actually we can do this if we use only KAME...

– but anyway within few yearsbut anyway within few years

Taking care about legacyTaking care about legacy Co-existence with IPv4Co-existence with IPv4

– NAT hides usage of private addressNAT hides usage of private address– Application GW hides usage of IPv6Application GW hides usage of IPv6

• SAMETHING! So, use IPv6 wherever NAT is needed!SAMETHING! So, use IPv6 wherever NAT is needed!

It is painful to add new protocol onto existing networkIt is painful to add new protocol onto existing network– simply avoid as much as you cansimply avoid as much as you can– That is just like “put new wine in old bottles”That is just like “put new wine in old bottles”– Create new network and move onto itCreate new network and move onto it– If you need to access legacy, use AGWIf you need to access legacy, use AGW

Operate ISP network and IXOperate ISP network and IX

Logically, we should have separate Logically, we should have separate systems for v4 and v6systems for v4 and v6– Note that they can share same hardware Note that they can share same hardware

and linksand links IPv6 network can simulate IPv4 network IPv6 network can simulate IPv4 network

but not vice versabut not vice versa

To design, install and operate IPv6 To design, install and operate IPv6 network, let’s think SIMPLE to achievenetwork, let’s think SIMPLE to achieve– IN-EXPENSIVE,IN-EXPENSIVE,– STABLE andSTABLE and– SCALABLE networkSCALABLE network

Pure IPv6 is the goal. Definitely.Pure IPv6 is the goal. Definitely.– It seems strange ? But it is!It seems strange ? But it is!

ConclusionConclusion