Assigning Addresses With The Bootp Client - Siemens SCALANCE X-300 Configuration Manual

3.4

Assigning addresses with the BOOTP client

How address assignment works
BOOTP (Bootstrap Protocol) is a protocol for the automatic assignment of IP addresses.
This type of address assignment is possible only when there is a BOOTP server in the
network.
A node without an IP address (BOOTP client) sends its MAC address with a BOOTP query
to all devices (MAC broadcast address FF-FF-FF-FF-FF-FF) on the network. The reply from
the server is also sent as a broadcast and contains not only the IP address but also the MAC
address of the client. A client that receives such a reply can recognize whether or not the IP
address is intended for it based on the MAC address.
BOOTP is based on the UDP protocol and uses UDP port 67 for the BOOTP server and port
68 for the client.
BOOTP with an IE switch
When shipped, DCP (and therefore access over the Primary Setup Tool or NCM) and DHCP
are enabled; BOOTP is disabled.
SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22
Assignment of an IP address
3.4 Assigning addresses with the BOOTP client
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