Network identities for components (e.g., server blades) of a multi-domain computer system (e.g., a server blade system) are stored in a connection framework (e.g., a carrier for the server blades) and copies thereof are stored in two or more support units (e.g., service processors for the carrier). These multiple copies can then be used to ensure the integrity of network identities that are allocated to the system units by the support units.