week3-Extended Information_Internet Protocols

Internet Protocols

· Building blocks of a network architecture

· Each protocol object has two different interfaces

o service interface: operations on this protocol

o peer-to-peer interface: messages exchanged with peer

· Term “protocol” is overloaded

o specification of peer-to-peer interface

o module that implements this interface

The Design of IPv6

· The Internet could not have been so successful in the past years if IPv4 had contained any major flaw.

· IPv4 was a very good design, and IPv6 should indeed keep most of its characteristics.

· It could have been sufficient to simply increase the size of addresses and to keep everything else unchanged.

· However, 10 years of experience brought lessons.

· IPv6 is built on this additional knowledge. It is not a simple derivation of IPv4, but a definitive improvement.

Resource from: http://www.ee.nthu.edu.tw/english/eindex.html