提出了一種新穎的交叉連接節點，它兼容彈性分組環標準節點的功能。多個彈性分組環通過交叉連接節點互連后，可構建彈性分組多環互連網絡。為保證數據能可靠、高效地進行跨環傳輸，對基于單環架構的標準幀格式進行了擴展定義，并基于擴展的幀格式對交叉連接節點的體系結構、跨環幀轉發算法進行了設計。研究表明，跨環數據能夠可靠、高效地進行傳輸。This paper introduces a new kind of node, namely, RPR-X node, to interconnect multiple Resilient Packet Rings (RPR). To achieve packets cross transmission among RPR sub-networks, and at the same time to guarantee the cross forwarding algorithm to be compatible with the standard forwarding procedure, this paper presents the extended definitions of standard RPR frame, MAC layer reference model of RPR-X node, and the corresponding packet cross forwarding algorithm. Simulation results demonstrate that the proposed method performs well in terms of performance metrics such as network’s throughput and end-to-end delay.