Chapter 36  DHCP Relay Commands 
A DHCP Relay is a device that forwards DHCP packets between clients and servers. DHCP 
Relay forward requests and replies between clients and servers when they are not on the same 
physical subnet. 
36.1  ip dhcp relay 
Description 
The ip dhcp relay command is used to enable DHCP Relay function globally. 
To disable DHCP Relay function, please use no ip dhcp relay command. 
Syntax 
ip dhcp relay 
no ip dhcp relay 
Command Mode 
Global Configuration Mode 
Privilege Requirement 
Only Admin, Operator and Power User level users have access to these 
commands. 
Example 
Enable DHCP Relay function globally: 
T2500G-10TS(config)# ip dhcp relay 
36.2  ip dhcp relay information option 
Description 
The ip dhcp relay information option command is used to enable option 82 
support in DHCP Relay. To disable this function, please use no ip dhcp relay 
information option command. 
Syntax 
ip dhcp relay information option 
no ip dhcp relay information option 
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