What is the maximum length for 10GBASE-SR?

The maximum length for 10GBASE-SR, which is a short-range optical Ethernet standard designed for high-speed data transmission over multimode fiber, is indeed 400 meters. This specification pertains to the use of OM3 multimode fiber, which is capable of supporting transmission distances up to 400 meters at the 10GBASE-SR rate.

In practical applications, 10GBASE-SR is primarily utilized in data centers and for intra-building connections where short distances are required. This standard can also extend to 300 meters when using OM2 fiber. The 10GBASE-SR is therefore well-suited for short-range connections due to its ability to deliver high bandwidth over the defined distance without significant loss of signal quality.

While there are other options that specify longer distances, they do not represent the specifications of the 10GBASE-SR standard. For example, the other lengths cited apply to different standards or fiber types not used for 10GBASE-SR. Understanding these distance limitations is crucial for network design and ensuring that the appropriate technologies are selected for specific environments within data transmission settings.