This selects which discovery protocol, if any, the device uses to automatically discover remote FCIP entities -- either SLPv2, Service Location Protocol, or none, meaning no automatic discovery is used. Choosing none means all remote FCIP entities and links must be configured statically, which is more admin overhead but avoids depending on SLP being reachable and functional on the IP network in between. A storage team connecting two SAN fabrics over a simple point-to-point FCIP tunnel across a dedicated circuit might set this to none(2) and configure the remote entity statically, rather than relying on SLPv2 discovery across a more complex routed IP path.