DHCP-Server issues reserved ip address to any device?

[Stefan Guenther]

Hello,
 
 I have created the following entry in the configuration file:

host hpl320 
 { 
 hardware ethernet 00:14:38:9A:62:73;
 fixed-address hp1320.in-put.de;
 }

When this device isn't active and the ip address is free, the dhcp server
might assign the address to any other device, which is asking for an ip
address. 

Is it possible to generally reserve an ip address for a advice and therefore
prohibit the assign to any other device?

Thanks for any hint or advice,

Stefan