Sun-Me Kim

LSP merge in point to multipoint in-band OAM

This paper discusses the P2MP in band OAM framework primarily related to OAM and related management in MPLS-TP networks. The P2MP network MPLS-TP data transfer scheme from the root node to the leaf nodes of the In-band OAM because it supports, MPLS-TP OAM 50ms time, one of the requirements in the OAM packet can be processed.

Implementation of hierarchical QoS mechanism on PBB-TE system

This work investigates how hierarchical quality of service (QoS) could be realized in PBB-TE networks. The QoS mechanism is implemented using two rate three color marker (trTCM) and weighted fair queuing (WFQ) algorithms. We verify the performance of the QoS mechanism by measuring policing accuracies for four hierarchical QoS levels.

Transport SDN architecture for distributed cloud services

Distributed cloud services provide clients with optimal computing and storage resources over many micro datacenters remotely scattered. It requires networking technologies to connect micro datacenters. This paper addresses transport SDN requirements necessary for distributed cloud services, and then suggests architecture of T-SDN controller.

Point-to-Multipoint Services and Hierarchical QoS on PBB-TE System

We have proposed a solution to multicast services and an advanced quality of service (QoS) mechanism on a packet transport system (PTS) based on PBB-TE. The point-to-multipoint (PtMP) connection in the PBB-TE system have been realized by grouping point-to-point (PtP) PTL trunks and mapping a BSI onto the PtP PTL trunks using a multicast backbone destination address. To provide end-to-end QoS of the PtMP services, the hierarchical QoS scheme for backbone service instances and connection-oriented paths has been implemented in the PTS. For providing different capabilities for service selection and priority selection, the PTS offers to customers three basic types of the port-based, C-tagged, and S-tagged service interface defined by the IEEE 802.1ah. To offer to customers different capabilities of the layer 3 applications and services, moreover, an IP-flow service interface have been added. In order to evaluate traffic performance for PtMP services in the PTS, the PtMP throughputs for the link capacity of 1 Gbps at the four service interfaces were measured in the leaves of the ingress edge node, the transit node, and the egress edge node. The throughputs were about 96 % because the B-MAC overhead of 22 bytes occupies 4% of the 512-byte packet. The QoS performance is ability to guarantee an application or a user a required bandwidth, and could be evaluated by the accuracy of policing or shaping. The accuracy of the policing scheme and the accuracy of the shaping scheme were 99% and 99.3% respectively.