What is the length of 10gb SR?

Understanding the Link Length of 10GB SR

The Cisco 10GBASE-SR Module is designed to deliver high-speed data transmission over multimode fiber optic cables. The length of the link supported by this module varies depending on the type of multimode fiber employed.

Fiber Types and Link Lengths:

• FDDI-grade MMF (Multimode Fiber): The original type of multimode fiber, FDDI-grade MMF supports a link length of up to 26 meters with the 10GBASE-SR Module.
• OM3 MMF (Optimized Multimode Fiber): Designed for higher bandwidth applications, OM3 MMF enables link lengths of up to 300 meters when used with the 10GBASE-SR Module.
• OM4 MMF (Optimized Multimode Fiber): The latest and most advanced type of multimode fiber, OM4 MMF extends the link length to an impressive 400 meters with the 10GBASE-SR Module.

Considerations for Link Length Selection:

When choosing the appropriate multimode fiber for a 10GB SR link, several factors need to be considered:

• Distance requirements: Determine the desired distance for the data transmission.
• Signal attenuation: Multimode fiber experiences signal attenuation, which reduces the strength of the signal over longer distances.
• Budget: OM3 and OM4 MMF are more expensive than FDDI-grade MMF, so cost considerations may influence the choice.

Conclusion:

The length of a 10GB SR link is dictated by the type of multimode fiber used. FDDI-grade MMF supports up to 26 meters, OM3 MMF extends the range to 300 meters, and OM4 MMF enables links of up to 400 meters. Understanding the fiber types and link length limitations is crucial for designing optimal high-speed data transmission systems using the Cisco 10GBASE-SR Module.