A case for stateful forwarding plane
A case for stateful forwarding plane
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DOI：
10.1016/j.comcom.2013.01.005
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发表时间：
2013-04-01
影响因子：
6
通讯作者：
Zhang, Lixia
中科院分区：
文献类型：
--
作者：
Yi, Cheng;Afanasyev, Alexander;Zhang, Lixia
在命名数据网络（NDN）中，报文携带的是数据名称，而不是源地址和目的地址。这种范式的转变导致了一个新的网络转发平面：数据消费者发送兴趣包来请求所需的数据，路由器转发兴趣包并维护所有未决的兴趣状态，然后用于将数据包引导回消费者。保持待处理的兴趣状态，再加上双向的兴趣和数据交换，使NDN路由器的转发过程能够衡量不同路径的性能，快速检测故障并重试备选路径。本文描述了一种NDN转发平面的初步设计，并对其在不利条件下的数据传输性能进行了评估。研究结果表明，该有状态转发平面能够成功规避前缀劫持，避免链路失败，并利用多路径缓解拥塞。我们还比较了NDN与基于ip的解决方案的性能，以突出有状态转发平面的优势。(C) 2013 Elsevier B.V.版权所有
In Named Data Networking (NDN), packets carry data names instead of source and destination addresses. This paradigm shift leads to a new network forwarding plane: data consumers send Interest packets to request desired data, routers forward Interest packets and maintain the state of all pending Interests, which is then used to guide Data packets back to the consumers. Maintaining the pending Interest state, together with the two-way Interest and Data exchange, enables NDN routers' forwarding process to measure performance of different paths, quickly detect failures and retry alternative paths. In this paper we describe an initial design of NDN's forwarding plane and evaluate its data delivery performance under adverse conditions. Our results show that this stateful forwarding plane can successfully circumvent prefix hijackers, avoid failed links, and utilize multiple paths to mitigate congestion. We also compare NDN's performance with that of IP-based solutions to highlight the advantages of a stateful forwarding plane. (C) 2013 Elsevier B.V. All rights reserved.