Siemens SCALANCE X-200 사용자 설명서

Configuration / diagnostics using remote mechanisms 

 

6.1 Assignment of an IP address 

 

SCALANCE X-200 

154

 

Operating Instructions, 12/2011, A5E00349864-19 

6.1.3 

Configuration with DHCP 

The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows the dynamic 

configuration of IP addresses and provides additional information.  
During initial startup, the network node registers with a server that provides the DHCP 

service. The server assigns a free IP address so that at the next startup, a connection is not 

absolutely necessary. 

Properties of DHCP 

●  The use of DHCP is not restricted to the startup phase. DHCP can also be used during 

operation. 

●  The IP address remains valid for a period set by the DHCP server known as the "lease 

time". When this expires, the DHCP server must be requested to assign an IP address 

again.  

●  Generally, there is no fixed address assignment; in other words, when a client requests 

an IP address again, it is normally assigned a different address. It is, however, possible to 

configure the DHCP server so that it makes a fixed address assignment. 

RFC - Request for Comments 

The following RFC can be downloaded from the Internet: 
RFC 2131 - Dynamic Host Configuration Protocol