Browse Prior Art Database

RPR Broadcast Domains

IP.com Disclosure Number: IPCOM000124283D
Original Publication Date: 2005-May-20
Included in the Prior Art Database: 2005-May-20
Document File: 1 page(s) / 43K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

The main idea is to reduce the traffic load on ring spans and tributary links, which are not intended to receive certain type of traffic. It also improves the "spatial bandwidth reuse" concept on a RPR (Resilient Packet Ring) network. Additionally, it makes possible to define broadcast domains for broadcast/unknown unicast traffic for a specific Close User Group (CUG). Topology discovery mechanism can be enhanced in a way that each station has a configurable parameter, to define whether other stations broadcast table would contain it. The result of this configuration is then propagated over the network using a specific bit of the topology discovery packets. On processing of topology packets the referred parameter is checked and the inclusion of the initiator's node ID in the broadcast table is decided. The overhead caused by this processing and its propagation through the network is negligible. The advantages introduced by this idea are the increasing of the available ring bandwidth in situations where it would be reduced due to unwanted broadcast/unknown unicast traffic. Another advantage is the avoidance of undesired flooding of unknown unicast traffic towards the client ports. In specific network configurations the proper use of this functionality would reduce the occupied bandwidth, hence it would ease the use of premium applications requiring high bandwidth.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 64% of the total text.

Page 1 of 1

S

RPR Broadcast Domains

Idea: Gonçalo Crispim, PT-Lisbon

The main idea is to reduce the traffic load on ring spans and tributary links, which are not intended to receive certain type of traffic. It also improves the "spatial bandwidth reuse" concept on a RPR (Resilient Packet Ring) network. Additionally, it makes possible to define broadcast domains for broadcast/unknown unicast traffic for a specific Close User Group (CUG).

Topology discovery mechanism can be enhanced in a way that each station has a configurable parameter, to define whether other stations broadcast table would contain it. The result of this configuration is then propagated over the network using a specific bit of the topology discovery packets. On processing of topology packets the referred parameter is checked and the inclusion of the initiator's node ID in the broadcast table is decided. The overhead caused by this processing and its propagation through the network is negligible.

The advantages introduced by this idea are the increasing of the available ring bandwidth in situations where it would be reduced due to unwanted broadcast/unknown unicast traffic. Another advantage is the avoidance of undesired flooding of unknown unicast traffic towards the client ports. In specific network configurations the proper use of this functionality would reduce the occupied bandwidth, hence it would ease the use of premium applications requiring high bandwidth.

A specific application example would be to h...