Routing NX-OS passive-interface default
passive-interface default command is used to make all interfaces participating in a routing protocol enter passive mode by default. Once configured, the active interfaces must be selectively enabled to allow for routing protocol adjacencies to form. This is the case for IGPs such as EIGRP, OSPF, and IS-IS.
NX-OS documentation seems to indicate that this command is only available on the 3k, 7k, and 9k Nexus platforms and not for the 5k platforms for EIGRP and OSPF. It seems to indicate that it is only available for IS-IS. However, this is not the case.
passive-interface default command is available on the 5k platform as well, as of version 5.2(1).