Inter-DC Connectivity options

Here are the most common 400G optics modules used for inter-DC connectivity.

Optics Type: 400G-LR4

Description: Up to 10km over 1x SM fiber pair, using four 100G PAM4 optical signals muxed on the fiber pair.
Fiber Type & fiber connector: Single-mode fiber, Duplex LC connector
Use Case: For DCI applications for up to 10km.

Optics Type: 400G-LR8
Description: Up to 10km over 1x SM fiber pair, using eight 50G PAM4 optical signals muxed on the fiber pair.
Fiber Type & fiber connector: Single-mode fiber, Duplex LC connector
Use Case: For DCI applications for up to 10km

Optics Type: 400G-ER8
Description: Up to 40km over 1x SM fiber pair, using eight 50G PAM4 optical signals muxed on the fiber pair.
Fiber Type & fiber connector: Single-mode fiber, Duplex LC connector
Use Case: For DCI applications for up to 40km