The IEEE already has a study group working on a 1000Base-F proposal that,while using fiber-optic cable for its physical layer,will retain the CSMA/CD-based media access control layer of previous Ethernet technologies.

• IEEE已有一个研究组在对1000Base-F建议进行研究，该建议在采用光缆作为物理层的同时，仍保留以前以太网技术用的基于CSMA/CD的介质访问控制层。