A Simplified QoS Model for MPLS Networks 


Vol. 30,  No. 4, pp. 235-245, Apr.  2005


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  Abstract

In this paper, a simplified QoS model of MPLS-based backbone network. Conventional scheme proposed by IETF(IETF schem) is to embed a DiffServ model in MPLS network. However, this approach results in overall upgrade of MPLS system and so it is difficult to deploy this approach. Our proposed model, however, uses a Virtual Link which is a set of Label Switched Path(LSP) connected from an Ingress Label Edge Router(LER) to an Egress LER. In this model, Per-Hop-Behavior(PHB) is implemented only at each LSP in ingress LER and Core Label Switch Routers(LSRs) just guarantee each LSP's bandwidth, not service. This bandwidth guarantee service is fully provided by legacy MPLS model. Also we propose flow allocation mechanism and the flow distribution among LSPs of the virtual link by the flow according to the network status. To evaluate the simplified approach, the characteristics of the approach are compared logically with these of IETF's one through simulations.

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  Cite this article

[IEEE Style]

S. Seok and C. Kang, "A Simplified QoS Model for MPLS Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 4, pp. 235-245, 2005. DOI: .

[ACM Style]

Seung-Joon Seok and Chul-Hee Kang. 2005. A Simplified QoS Model for MPLS Networks. The Journal of Korean Institute of Communications and Information Sciences, 30, 4, (2005), 235-245. DOI: .

[KICS Style]

Seung-Joon Seok and Chul-Hee Kang, "A Simplified QoS Model for MPLS Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 4, pp. 235-245, 4. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880