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URL:
http://www.ietf.org/rfc/rfc2460.txt
IP version 6 (IPv6) [RFC 2460], developed by the
Internet Area of IETF, is a new version of the Internet Protocol, designed as a
successor to IP version 4 (IPv4) [RFC-791]. The primary changes are (i)
extension of the IP address from 32 bytes (IPv4) to 128 bytes (IPv6) to enable
more addressable nodes, (ii) flow labeling, (iii) header simplification, and
(iv) more support for extensions and options. Support of security services such
as message authentication and encryption is also required for any
implementation of IPV6.
Advantages/Strengths: IPv6 has increased
address space and other advantages over IPv4.
Disadvantages/Weaknesses: Because of the
enormous investment in IPv4, and the limited additional benefits of IPv6, IPv6
has not yet been implemented widely, and not much progress has been made in
convincing vendors of the need to convert from V4 to V6.
Keywords:
Internet, network layer, addressing.
Routing Protocols
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