The "passive" command on an OSPF interface prevents the interface from sending or receiving OSPF packets, but allows it to remain in the OSPF database. Review all the details about ospf interface passive through the links we have compiled below and send us your feedback via our contact page.
The passive interface command prevents the router from sending or receiving OSPF packets on the specified interface.
Site:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/xe-3s/ospf-interface-passive.html