This article discusses the process of checking TX/RX optical power for Juniper Routers and Cisco Routers. It focuses on the display of diagnostics data and alarms for Gigabit Ethernet optical transceivers (SFP, SFP+, XFP, QSFP+, or CFP) installed in EX Series Switches. Juniper Networks® has platforms ranging from the Juniper Networks CTP Series Circuit to Packet Platforms, BX Series Multi-Access Gateways, E Series Broadband Services Routers, M Series Multiservice Edge Routers, MX Series 3D Universal Edge Routers, to the T Series Core Routers. These platforms. AI clusters and cloud data centers demand faster, more efficient data transmission with minimal power loss. The following sections provide an overview of these different optics. Reading internal transceiver data helps monitor link status, optical power, temperature and coding compatibility between modules and switches. Figure 1 Schematic of Transceiver Connected to Switch 1. Checking TX / RX optical power for Juniper Routers For checking transmission links, it is good to know how to find out the optical power for troubleshooting and making sure the desired or optimal range is meet.