Operation Manual - DHCP 
Quidway S5600 Series Ethernet Switches-Release 1510  Chapter 2  
DHCP Server Configuration
 
Huawei Technologies Proprietary 
2-5 
2.2.2  Enabling DHCP 
You need to enable DHCP before performing other DHCP-related configurations, 
which takes effect only after DHCP is enabled. 
Table 2-2 Enable DHCP 
Operation  Command  Description 
Enter system view 
system-view 
— 
Enable DHCP 
dhcp enable 
Required 
By default, DHCP is enabled 
 
  Note: 
To prevent malicious attacks to unused sockets and enhance security, S5600 series 
Ethernet switches provide the following functions: 
z  When DHCP is enabled, sockets UDP 67 and UDP 68 used by DHCP are enabled. 
z  When DHCP is disabled, sockets UDP 67 and UDP 68 are disabled at the same 
time. 
The preceding functions are implemented as follows: 
z  After you enable DHCP by using the dhcp enable command, if the DHCP server 
and DHCP relay are not configured, sockets UDP 67 and UDP 68 will not be 
enabled. If the DHCP server and DHCP relay are configured, sockets UDP 67 and 
UDP 68 will be enabled. 
z  After you disable DHCP by using the undo dhcp enable command, even if the 
DHCP server and DHCP relay are configured, sockets UDP 67 and UDP 68 will be 
disabled. 
 
2.2.3  Configuring Global Address Pool Mode on Interface(s) 
You can configure the global address pool mode on the specified or all interfaces of a 
DHCP server. After that, when the DHCP server receives DHCP packets from DHCP 
clients through these interfaces, it assigns IP addresses in the global address pool to 
the DHCP clients.   
Table 2-3 Configure the global address pool mode on interface(s) 
Operation  Command  Description 
Enter system view 
system-view 
—