SANtricity 11 Manuals (CA08872-010)

Generate a link-local address
The device generates a link-local address, which has 10 bits, followed by 54 zeros, and followed by the 64-bit interface ID.

Test the uniqueness of a link-local address
The node tests to make sure that the link-local address that it generates is not already in use on the local network. The node sends a neighbor solicitation message by using the ND protocol. In response, the local network listens for a neighbor advertisement message, which indicates that another device is already using the link-local address. If so, either a new link-local address must be generated or auto-configuration fails, and another method must be used.

Assign a link-local address
If the device passes the uniqueness test, the device assigns the link-local address to its IP interface. The link-local address can be used for communication on the local network but not over the Internet.

Contact the router
The node tries to contact a local router for more information about continuing the configuration. This contact is performed either by listening for router advertisement messages sent periodically by the routers or by sending a specific router solicitation message to ask a router for information about what to do next.

Provide direction to the node
The router provides direction to the node about how to proceed with auto-configuration. Alternatively, the router tells the host how to determine the global Internet address.

Configure the global address
The host configures itself with its globally unique Internet address. This address is generally formed from a network prefix provided to the host by the router.