Does the optical splitter output external IP addresses

In a PON network, multiple users connected through the same optical splitter can appear to share the same external IP address if NAT is used, but each user typically has a unique internal IP.Understanding Optical Splitters in PONOptical splitters are passive devices that divide a single optical signal from an Optical Line Terminal (OLT) into multiple outputs for Optical Network Terminals (ONTs) at users' premises . They can be deployed in two main architectures:Centralized splitters: Located near the OLT in a central office or Fiber Distribution Hub (FDH), allowing easier reconfiguration and management .Distributed or cascaded splitters: Placed in closures or pedestals in the field, often with fixed connections that are not easily reconfigurable . The splitter itself is a passive optical device and does not assign IP addresses; it only distributes the optical signal to multiple endpoints.IP Addressing ImplicationsExternal IP: The external (public) IP address is assigned by the Internet Service Provider (ISP) at the network gateway, typically at the OLT or a router connected to the OLT. Multiple ONTs behind the same splitter can share the same external IP if the ISP uses Network Address Translation (NAT), which maps multiple internal IPs to a single public IP.Internal IP: Each ONT or user device usually has a unique internal IP address within the local network. This ensures proper routing and avoids conflicts even if the external IP is shared.Centralized vs Distributed Splitters: Centralized splitters allow easier reassignment of ONTs to different OLT ports, which can affect internal IP management but does not inherently change the external IP assignment. Distributed splitters are fixed, so internal IPs are more static, but external IP sharing still depends on the ISP's NAT configuration.Key ConsiderationsBandwidth Sharing: All users connected through the same splitter share the same optical signal, so network performance can be affected by the number of active users.Security and Isolation: Even if the external IP is shared, internal IPs and VLANs can provide isolation between users.Dynamic IP Assignment: ISPs may assign dynamic external IPs, so the same ONT may have different external IPs over time, independent of the splitter architecture. In summary, the optical splitter does not determine IP addresses. Multiple users connected through the same splitter can share the same external IP via NAT, while maintaining unique internal IPs for proper routing and network management .