Document Type

Article

Date

2001

Embargo Period

2-2-2011

Keywords

scalabilty, resource reservation, aggregation, QoS, Diffserv

Language

English

Disciplines

Computer Sciences

Description/Abstract

This paper describes interdomain resource reservation through a third-party agent called a Bandwidth Management Point (BMP). The BMP of each domain is responsible for admission control, dynamic bandwidth provisioning, DSCP assignment, policy control, etc. We also propose that each domain be free to choose its own intradomain resource reservation protocol.This model solves two significant problems of today's Internet: interdomain dynamic resource provisioning, and scalability of the backbone. The BMP makes bulk reservations with each possible destination domain on behalf of hosts in its domain, and end hosts can join or leave the reservation without being involved with communication protocol between the domains. Reservations are based on the destination domain IP prefix and DSCP, and are dynamically updated according to aggregated traffic demand. Thus, unlike RSVP, the number of control states that backbone routers keep and the number of reservation setup messages between domains are reduced linearly with the number of domains. Since individual hosts are not involved with the interdomain reservation process, there is a corresponding saving in time.

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