Experimental Demonstration of Segment Routing
Experimental Demonstration of Segment Routing
复制标题
DOI：
10.1109/jlt.2015.2473656
复制
发表时间：
2016
影响因子：
4.7
通讯作者：
A. Sgambelluri;F. Paolucci;A. Giorgetti;F. Cugini;P. Castoldi
中科院分区：
文献类型：
--
作者：
A. Sgambelluri;F. Paolucci;A. Giorgetti;F. Cugini;P. Castoldi
段路由（SR）技术最近被提出，用于在不依赖信令协议的情况下执行有效的路由策略。到目前为止，SR技术在科学界受到的关注有限。本文给出了两种SR实现，并在两个不同的网络测试平台上成功地进行了演示。第一个实现侧重于软件定义网络（SDN）场景，其中节点由OpenFlow交换机组成，SR控制器是专门设计的OpenFlow控制器的增强版本。第二种实现包括一种新的路径计算元素（PCE）场景，其中节点由商用IP/MPLS路由器组成，SR控制器是PCE解决方案的新扩展版本。这两种实现都已成功地应用于演示动态流量重路由。特别是，通过在入口节点上强制不同的段列表配置，可以有效地实现重路由，而不会丢失数据包，也不需要使用信令协议。在不同的段列表条件下，这两种实现都获得了有效的可伸缩性性能。
Segment routing (SR) technology has been recently proposed to enforce effective routing strategies without relying on signaling protocols. So far, the SR technology has received limited attention within the scientific community. In this paper, two SR implementations are presented and successfully demonstrated in two different network testbeds. The first implementation focuses on a software defined networking (SDN) scenario where nodes consist of OpenFlow switches and the SR controller is a specifically designed enhanced version of an OpenFlow controller. The second implementation includes a novel path computation element (PCE) scenario where nodes consist of commercially available IP/MPLS routers and the SR controller is a new extended version of a PCE solution. Both implementations have been successfully applied to demonstrate dynamic traffic rerouting. In particular, by enforcing different segment list configurations at the ingress node, rerouting is effectively achieved with no packet loss and without requiring the use of signaling protocols. Effective scalability performance is achieved in both proposed implementations, under different segment list conditions.