What are the infrastructure requirements to upgrade from 100Base-FX Backbone to 10GBase-LR?

Upgrading from 100Base-FX to 10GBase-LR requires several infrastructure enhancements. First, the existing fiber optic cabling must be compatible with 10G speeds, typically requiring multimode or single-mode fiber depending on the distance. Additionally, network switches and routers must support 10GBase-LR interfaces, necessitating hardware upgrades. Lastly, ensure that the optical transceivers are appropriate for 10GBase-LR to facilitate the higher bandwidth and longer distances.