Manual
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161 
Switch can act  as both a  DHCP server  and a DHCP relay. DHCP server  supports not only 
dynamic IP address assignment, but also manual IP address binding (i.e. specify a specific IP 
address to a specified MAC address or specified device ID over a long period. The differences 
and relations between dynamic IP address allocation and manual IP address binding are: 1) IP 
address obtained dynamically can be different every time; manually bound IP address will be 
the same all the time. 2) The lease period of IP address obtained dynamically is the same as 
the lease period of the address pool, and is limited; the lease of manually bound IP address is 
theoretically endless. 3) Dynamically allocated address cannot be bound manually. 4) Dynamic 
DHCP address pool can inherit the network configuration parameters of the dynamic DHCP 
address pool of the related segment.  
23.2 DHCP Server Configuration 
DHCP Sever Configuration Task List: 
Enable/Disable DHCP service 
Configure DHCP Address pool 
Create/Delete DHCP Address pool 
Configure DHCP address pool parameters 
Configure manual DHCP address pool parameters 
Enable logging for address conflicts 
1. Enable/Disable DHCP service 
Command 
Explanation 
Global Mode 
service dhcp 
no service dhcp 
Enable  DHCP  server.  The  no  command 
disables DHCP server. 
2. Configure DHCP Address pool 
(1) Create/Delete DHCP Address pool 
Command 
Explanation 
Global Mode 
ip dhcp pool <name> 
no ip dhcp pool <name> 
Configure  DHCP  Address  pool.  The  no 
operation cancels the DHCP Address pool. 
(2) Configure DHCP address pool parameters 
Command 
Explanation 
DHCP Address Pool Mode 
network-address <network-number> [mask | 
prefix-length] 
Configure the address scope that can be 
allocated to  the  address  pool. The  no 










