Networking

Both devices and network architecture should be consider during data center upgrade. With the driven of applications like Cloud, Internet of Things, and virtual data center, it is clear that 10G can no longer satisfy the application needs. Migrating to 40/100G is an urgent problem. Cisco Nexus 9396PX switch, as one of the first member of Cisco Nexus 9000 series platform, can support 40G transmission with flexibility and high density. However, the problem is that many customers do not know how to get there to make full use of these devices. This post will give a detailed description about how to connecting Cisco Nexus 9396PX switch to optimized network architecture. Optimized Network Architecture—Spine-Leaf Architecture The traditional network usually used a three tier network architecture. However, with the migration of 40/100G, a new architecture is taking place of the traditional one with great advantages. This is known as spine-leaf architecture. Compare with the traditional ...

The singlemode QSFP+ and multimode QSFP+ here mean the QSFP+ transceivers which work at different types of optical fibers, ie singlemode QSFP+ will work with singlemode fiber, while multimode QSFP+ will work with multimode fiber. So, what’s the different between them? And what should we notice when using them? Which one should I choose? In this article, we will have a discussion around this topic. Singlemode QSFP+ vs. Multimode QSFP+ Singlemode QSFP+ Singlemode fiber (SMF) has much tighter tolerances for optics used. The core is smaller and the laser wavelength is narrower. This means that SMF has the capability for higher bandwidth and much longer distances in transmission. Singlemode QSFP+ (SMF QSFP+) works mainly in 1310nm wavelength and is mostly used in long distances transmission. There are many different types of Singlemode QSFP+, and different type can achieve different transmission distance, such as 500m, 1km, 2km, 10km and 40km. he color of compatible fiber optic patc...