Slice-based network transit service: Inter-domain L2 networking on ExoGENI
Slice-based network transit service: Inter-domain L2 networking on ExoGENI
复制标题
基于切片的网络传输服务：ExoGENI 上的域间 L2 网络
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
A. Mandal
中科院分区：
文献类型：
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作者：
Yuanjun Yao;Q. Cao;J. Chase;Paul Ruth;I. Baldin;Yufeng Xin;A. Mandal
Geni Network Testbend设计了通过在链路层（L2）构建虚拟网络的能力来实现网络协议的实验。 GENI用户在其Geni Slices中构建虚拟网络，这些网络跨越了多个Geni聚集体，由网络面料提供商的L2网络电路（例如Internet2）链接。本文概述了外观部署中跨板缝线的新功能。它们使切片所有者能够创建L2链接，跨越Exogeni架子（OpenStack Cloud站点），包括指向其他租户拥有的切片的链接。与Exogeni虚拟网络上的其他操作一样，跨板缝线是动态的，并且可以通过编程控制。用户可以随着时间的推移调整其切片的网络拓扑以及与其他切片的互连。跨板缝线扩大了GENI作为域间网络实验的平台的潜力，包括为其他切片提供高速网络服务的租户切片。本文报告了一个针对Exogeni跨板缝线的简单演示实验：在切片内运行的网络运输服务，代表链接到它的客户切片管理共享电路拓扑，并将客户流量通过其共享网络骨干拓扑路由。该实验表明了跨板缝线的潜力来解决GENI的关键限制：在GENI虚拟网络中使用的高速网络电路的成本和有限的可用性。
The GENI network testbed was designed to enable experimentation with network protocols by offering the capability to construct virtual networks at the link layer (L2). GENI users build virtual networks in their GENI slices that span resources on multiple GENI aggregates, linked by L2 network circuits from network fabric providers (e.g., Internet2). This paper summarizes new features for cross-slice stitching in the ExoGENI deployment. They enable slice owners to create L2 links crossing slice boundaries within ExoGENI racks (OpenStack cloud sites), including links to slices owned by other tenants. Like other operations on virtual networks in ExoGENI, cross-slice stitching is dynamic and programmatically controlled. Users can adapt the network topologies of their slices and their interconnections with other slices over time. Cross-slice stitching expands the potential of GENI as a platform for inter-domain network experimentation, including tenant slices that provide high-speed network-based services to other slices. This paper reports on a simple demonstration experiment for ExoGENI cross-slice stitching: a network transit service that runs within a slice, manages a shared circuit topology on behalf of customer slices that link to it, and routes customer traffic over its shared network backbone topology. This experiment shows the potential of cross-slice stitching to address a key limitation of GENI: the cost and limited availability of high-speed network circuits for use within GENI virtual networks.