Provided are a method and device for managing a Dynamic Host Configuration Protocol (DHCP) server and a method and device for managing a DHCP relay. The methods comprises that: a Common Information Model (CIM)-based DHCP server and/or a CIM-based DPCH relay class is defined; and a network management system configures and manages, by a CIM management application mechanism, the DHCP server which implements the DHCP server class and/or on the DHCP relay which implements the DHCP relay class. By the present disclosure, a problem caused by the fact that at least one of DHCP server configuration and/or the DHCP relay configuration is implemented by manual configuration in the related art is solved, and configuration efficiency is improved.
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