| DIASEAM:一种MPLS网络中新的组播转发机制 |
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| 引用本文： | 胡雪南,周廷显,王永建.DIASEAM:一种MPLS网络中新的组播转发机制[J].南京理工大学学报(自然科学版),2006,30(1):61-64. |
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| 作者姓名： | 胡雪南 周廷显 王永建 |
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| 作者单位： | 哈尔滨工业大学,通信技术研究所,黑龙江,哈尔滨,150001 |
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| 摘 要： | 在多协议标签交换网络中，ATM标签交换路由器上的VC合并技术能够增强组播转发的扩展能力。为降低VC合并技术对附加缓存的需求，该文在SEAM转发机制的基础上提出了一种新的组播转发机制——动态标识符分配的SEAM转发机制DIASEAM（Dynamic Identifier Allocation SEAM）。通过为每个连接分配多个连接标识符，DIASEAM机制能够充分利用VPI／VCI标识符空间，大大节省ATM标签交换路由器的附加缓存。仿真结果表明：和基于传统VC合并技术的SEAM机制相比较，DIASEAM转发机制体现了更优越的性能，ATM-LSR附加缓存的需求和数据包的延迟显著降低。
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| 关 键 词： | 多协议标签交换 组播 VC合并 |
| 文章编号： | 1005-9830(2006)01-0061-04 |
| 收稿时间： | 2005-03-10 |
| 修稿时间： | 2005-11-28 |
DIASEAM: New Multicast Forwarding Mechanism in MPLS Networks |
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| HU Xue-nan,ZHOU Ting-xian,WANG Yong-jian.DIASEAM: New Multicast Forwarding Mechanism in MPLS Networks[J].Journal of Nanjing University of Science and Technology(Nature Science),2006,30(1):61-64. |
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| Authors: | HU Xue-nan ZHOU Ting-xian WANG Yong-jian |
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| Institution: | Communication Research Center, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | In multiprotocal label switch network,VC-merge is presented as the most likely implementation to offer scalable multicast forwarding at ATM-LSR.Based on SEAM,a new multicast forwarding mechanism DIASEAM(Dynamic Identifier Allocation SEAM) is proposed to minimize the need for additional buffer at ATM-LSR. By dynamically allocating the number of connection identifier per connection,DIASEAM causes a large reduction in the additional buffer requirements and an effective utilization of the VPI/VCI space.The simulation results show that there is a remarkable reduction in buffer requirements and packet delay for DIASEAM in contrast to SEAM based on traditional VC-merge technique. |
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| Keywords: | multiprotocol label switch multicast VC-merge |
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