SRAN：通过映射与封装扩展命名数据网络
SRAN: Scaling NDN Routing via Map-and-Attach
AI总结：
研究NDN路由扩展性难题，提出SRAN架构，基于映射与封装原则分离可达性，扩展映射支持多播，利用NDN原生特性实现安全路由等，评估表明其转发状态随拓扑扩展且能实时适应前缀变化。
AI中文摘要：
当转发状态由诸如终端用户或多播组等外部实体驱动时，网络路由扩展性难以实现。命名数据网络（NDN）面临此挑战：按名称获取数据，将转发状态与大量应用名称前缀绑定。本文提出SRAN，一种NDN的可扩展路由与转发架构。基于映射与封装原则，通过在网络边缘将前缀映射到出口路由器，分离名称前缀可达性与拓扑可达性。网络核心仅基于拓扑连接进行路由和转发。SRAN扩展此映射以支持多播，通过适配比特索引显式复制（BIER），将前缀到多个出口映射编码为比特串以实现无状态多播传输。在NDN基础上实现，利用NDN原生安全和数据集同步进行安全路由和前缀状态分发，无需额外协议。在代表性Rocketfuel拓扑上的评估证实，网络转发状态随拓扑而非应用前缀数量扩展，并以最小分发开销实时适应前缀变化。
英文摘要：
Network routing scalability becomes difficult when forwarding state scales with an external identifier space rather than network topology. Named Data Networking (NDN) faces this challenge acutely because routing directly on application name prefixes ties forwarding state to an unbounded namespace. This paper presents SRAN, an intra-domain NDN routing architecture that applies the routing-scalability principle underlying Map-and-Encap through Map-and-Attach: application prefixes are mapped to egress routers, and the resulting mapping information is attached to the original Interest. This enables network routing and forwarding to operate on topological identifiers while keeping NDN Interests intact and preserving native NDN communication semantics, including Interest/Data exchange, in-network caching, and data-centric security. SRAN further uses the same prefix-to-egress mapping to realize Bit Index Explicit Replication (BIER) for scalable NDN Interest multicast. SRAN leverages existing NDN mechanisms to securely maintain prefix-to-router mappings among user-facing routers without introducing new protocols. Evaluation on Rocketfuel topologies shows that routers' forwarding state scales with network topology rather than application-prefix count, while prefix updates are disseminated in real time with low communication overhead.
