H3C has developed four solutions in response to the development trend of all-optical networks: iOptic Ethernet network solution, iOptic Passive Optical LAN (POL) network solution based on the Ethernet Passive Optical Network (EPON) technology, iOptic PON+Ethernet. H3C has developed four solutions in response to the development trend of all-optical networks: iOptic Ethernet network solution, iOptic Passive Optical LAN (POL) network solution based on the Ethernet Passive Optical Network (EPON) technology, iOptic PON+Ethernet. All-optical networks use optical signals to complete all network communication functions, eliminating the need for optical-electrical conversion within the network, thereby bypassing the challenge of improving the information processing rate of electronic devices. Compared to traditional copper. Optical modules are widely used in switches, network cards, routers, and other communication equipment. Reading optical module information during use helps understand its real-time operating status, allowing you to locate the cause of link abnormalities more quickly. The port types of H3C CR series core routers are SFP, SFP+, XFP, QSFP+, CFP2, QSFP28 optical interfaces, which can be matched with 1. 25G SFP series optical modules.