An Automated Traffic Engineering Algorithm for MPLS-Diffserv Domain
Junaid Ahmed Zubairi · 2002
Traffic Engineering seeks to optimize the handling of the traffic in a network such that the capacity in various parts is utilized efficiently. IETF has developed new protocols and techniques to meet the emerging traffic requirements and to manage and control the network and its services. With MPLS, Diffserv, RSVP-TE/CR-LDP, SLA and COPS in place, manual provisioning of the network is impossible and it is expected that several algorithms will be developed to automate traffic engineering. In this paper, an efficient dynamic link-coloring algorithm is proposed to engineer QoS paths within a Diffserv aware MPLS domain. This algorithm applies a set of rules across the domain to allocate LSP's to traffic trunks based on the Diffserv classes of service and dynamic link metrics. Initial results of applying the algorithm to meet the demands of traffic sets consisting of several LSP requests with varying classes of service are presented.