IPv6

IPv6

-Version of the Internet Protocol(IP) intended to succeedIPv4, which currently directs almost all internet traffic, but it is runningout of addresses.

-It is alsocalled IPng (IP next generation)

Comparison toIPv4

1. Larger address space

- Thelength of an IPv6 address is 128bits, compared to 32bits in IPv4.

- Therefore, it is now possible to support 2^128unique IP addresses, a substantial increase in number of computers that can beaddressed with the help of IPv6 addressing scheme.

2. Stateless address auto configuration (SLAAC)

- Thisfeature allows IPv6 host to configure automatically when connected to a routedIPv6 network.

3. Mandatory network-layer security

- Internet protocol security (IPsec) was originally developed for IPv6, but found widespread deploymentfirst in IPv4, into which it was back-engineered. IPsec is an integral part ofthe base protocol suite in IPv6. IPsec is mandatory in IPv6, but optional forIPv4.

4. Better mobility support

- Thisfeature ensures transport layer connection survivability and allows a computeror a host to remain reachable regardless of its location in an IPv6 networkand, in effect, ensures transport layer connection survivability.