New Feature Manual - DHCP 
Quidway S3900 Series Ethernet Switches-Release 1510 
Chapter 2  DHCP Relay Configuration C
ommands
 
Huawei Technologies Proprietary 
2-2 
2.1.2  dhcp-relay hand 
Syntax 
dhcp-relay hand { enable | disable } 
View 
System view 
Parameter 
None 
Description 
Use the dhcp relay hand enable command to enable the DHCP relay handshake 
function.  
Use the dhcp relay hand disable command to disable the DHCP relay handshake 
function.  
By default, the DHCP relay handshake function is enabled. 
Example 
# Disable the DHCP relay handshake function. 
<Quidway> system-view 
System View: return to User View with Ctrl+Z. 
[Quidway] dhcp relay hand disable 
2.1.3  dhcp relay information enable 
Syntax 
dhcp relay information enable 
undo dhcp relay information enable 
View 
System view 
Parameter 
None 
Description 
Use the dhcp relay information enable command to enable option 82 supporting on 
a DHCP relay, through which you can enable the DHCP relay to insert option 82 into 
DHCP request packets sent to a DHCP server.