Showing papers by "Ahmed Helmy published in 1995"
Journal Article•
TL;DR: The robustness exibility and scaling properties of this architecture make it well suited to large heterogeneous inter networks, and it uses soft state mechanisms to adapt to underlying network conditions and group dynamics.
Abstract: Existing multicast routing mechanisms were intended for use within regions where a group is widely represented or bandwidth is universally plentiful When group members and senders to those group members are distributed sparsely across a wide area these schemes are not e cient data packets or membership report information are periodically sent over many links that do not lead to receivers or senders respectively This characteristic lead us to develop a multicast routing architecture that e ciently establishes distribution trees across wide area internets where many groups will be sparsely represented and where bandwidth is not uniformly plentiful due to the distances and multiple administrations traversed E ciency is evaluated in terms of the state control message processing and data packet processing required across the entire network in order to deliver data packets to the members of the group The architecture also includes a more traditional dense mode of operation for use within campus networks or other regions characterized by plentiful bandwidth The Protocol Independent Multicast PIM architecture a maintains the traditional IP multicast service model of receiver initiated membership b can be con gured to adapt to di erent multicast group and network characteristics c is not dependent on a speci c unicast routing protocol and d uses soft state mechanisms to adapt to underlying network conditions and group dynamics The robustness exibility and scaling properties of this architecture make it well suited to large heterogeneous inter networks This document motivates and describes the PIM architecture A companion document describes the protocol mechanisms for both sparse and dense modes PIM draft ietf idmr pim arch ps
55 citations
01 Jan 1995
TL;DR: It is not appropriate to use Internet Drafts as reference material or to cite them other than as a \working draft" or \work in progress.
Abstract: Force (IETF), its Areas, and its Working Groups. (Note that other groups may also distribute working documents as Internet Drafts). Internet Drafts are draft documents valid for a maximum of six months. Internet Drafts may be updated, replaced, or obsoleted by other documents at any time. It is not appropriate to use Internet Drafts as reference material or to cite them other than as a \working draft" or \work in progress." Please check the I-D abstract listing contained in each Internet Draft directory to learn the current status of this or any other Internet Draft.
6 citations