IP addresses should be planned in a unified manner for the entire network. The network should be logically divided according to the principle of autonomy. Subnets should be divided according to regions, equipment distribution and the number of users in the region. Address allocation should meet the needs of various services and be continuous. Static and dynamic allocation should be combined. .Consecutive IP address segments should be allocated for the same services and functions, and a certain address space should be reserved on the basis of meeting existing needs; IPv4 private addresses should not be allocated again, and IPv4 private addresses that have been used should be gradually converted into IPv6 addresses.3) The new PON system should be selected and demonstrated for EPON, 10G-EPON, GPON, XG-PON, etc. According to the technological development trend, a mature, advanced system that is economically suitable for business needs should be selected, and the existing investment should be considered for reconstruction and expansion of the system. ;