An analysis of QoS traffic engineering using CR-LDP protocol over MPLS networks | |
| Author | Dehury, Rajesh Kumar |
| Call Number | AIT RSPR no.TC-01-05 |
| Subject(s) | Telecommunication--Traffic MPLS standard Telecommunication--Switching systems |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | NOTE 520 In an IP networks the way of packet forwarding is destination-based, in which all the forwarding decisions are based only on the destination address of the packets. Thus in a multi-links networks where more than one link is available for packet routing, the shortest paths get congested quickly, while other non-shortest paths are available for packet forwarding. Therefore using Multiprotocol Label Switching (MPLS) techniques, packets are forwarded using pre-configured Label Switching Paths (LSPs) and all the packets are explicitly routed using LSPs. In this research, we study and compare the service received by different types of traffic flows when they share either a link or different LSPs. In MPLS, non-shortest paths links are used to get better utilization of all available link bandwidth. Also the total network throughput improves with proper traffic engineering using non-shortest paths. The performance of different traffic flows i.e. Best-effort traffic and Real Time traffic is simulated using MPLS Network Simulator Tool. We found that, network utilization in the case of MPLS with class based queuing is 0.92 compared to 0.56 in case normal IP routing. Also we verified that percentage of packet loss is 0.27 compared to 42.3. Thus, service classification and proper traffic engineering achieves better throughput over MPLS networks. The results are compared with the same network condition without traffic engineering and service classification. Also it was found that in order to get benefit from traffic engineering, MPLS Label switching Paths should be end-to-end i.e. first router to last router in a MPLS domain networks. |
| Year | 2001 |
| Type | Research Study Project Report (RSPR) |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Erke, Tapio; |
| Examination Committee(s) | Ahmed, Kazi M. ;Teerapat Sanguankotchakorn ; |
| Scholarship Donor(s) | AIT Partial Scholarship; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2001 |