The types of switch optical ports include SFP, 10G SFP+, 25G SFP28, 40G QSFP+, 100G QSFP28, etc. We need to select the right optical module to insert into the switch for normal use. The Switch Resource Management (SRM) feature allows the hardware table size to be changed, so that switch functions can be optimized based on the use of the switch. The DXS-3400 Series is designed for use with two different software images: the Standard Image (SI) and the Enhanced Image (EI). RJ45 ports serve access-layer copper connections; SFP/SFP+ ports enable flexible 1G/10G uplinks; SFP28 delivers 25G for modern data centers; QSFP+ and QSFP28 support high-density 40G/100G spine–leaf. A passive optical network (PON) or Gigabit Passive Optical Network (GPON) is a point-to-multipoint (P2MP) network that uses a combination of active transmission equipments and passive cable components to provide network connectivity to end user's devices. This network is suitable for building. TJ1600 Core Switch is one of the world's largest disaggregated multi-terabit optical switches designed for building high-capacity optical backbone networks, 5G core networks and interconnecting hyper-scale datacenters. The number of standard switch ports is generally 24-48, and most network ports are Gigabit Ethernet or Fast Ethernet ports.