MEMBERS: -ASHISH KARPE

NITESH ACHARYASARVESH SAWANT

AMOL BHAMARE

GUIDED BY: -PROF.V.V. AGARWAL

Migration From IPv4 to IPv6

Overview..!

Requirements for transition to an IPv6 network.

Strategies towards migration to an IPv6 network.

Requirements..!

As IPv4 Address space is exhausted, the need for changing to IP next generation IP. IPv6 is obvious.

Ports being about to get extinct So need to make sure that new intermediate technologies need to be developed.

Small scale institution would be feasible with these strategies without much financial and functional changes in the network models

Strategies..!

Dual stack strategy

Tunneling strategy

Header Translation strategy

Dual stack strategy…!

Application

TCP/UDP

IPv4 IPv6

Link Layer

•The dual stack happens in the network layer, which contains both IPv4 and IPv6.•A large enterprise network includes many IPv4 networks and thousands of IPv4 nodes. •Therefore, the transition from IPv4 to IPv6 does not require upgrades on all nodes at the same time; IPv4 and IPv6 will coexist for some time. As a result, enterprises can apply dual stack method to transit to IPv6.

Tunneling strategy…!

There are two types of tunnels Manual tunnels Automatic tunnels

Automatic Tunnels: Automatic means that tunnel configuration is carried out with no additional

management.

Below are the types of automatic tunneling. 6to4 (RFC 3056) 6RD (RFC 5569) Teredo (RFC 4380) ISATAP (RFC4214) TSP (RFC 5572)

Manual Tunneling Manual tunnels are manually configured but

configuration is required at the both ends of the tunnel. Manual tunnels are good for implementation but from

configuration perspective they are little bit more tedious to work with.

By using manual tunnel , ISP can configures all tunnels, so is in control of its

deployment. This is the current approach used by many NRENs

(National research and education network, US)(including UKERNA and Renater)

Header Translation..!

The meaning of translation is to convert directly protocols from IPv4 to IPv6 or vice versa, which might result in transforming those two protocol headers and payload.

Translation methods: StateFul StateLess

There are three types of translation strategies acceptably used NAT-PT NAT64( IVI/Stateless NAT) with DNS64 NAT64(Statefull NAT) with DNS64

Review..!

One of the biggest challenges in the deployment of IPv6 is how to migrate IPv4-based infrastructures to those supporting IPv6.

We expect to rely on these transition strategies as the Internet shifts from the traditional IPv4 to an IPv6-based Internet while retaining both IPv4 and IPv6 throughout the transition phase

Thank You.!!