PLANET WGSW-52040 - Manual (Page 306)

option segment of the message. Then it will forward the reply message with DHCP
configuration information and option 82 information to DHCP SNOOPING.
4）DHCP SNOOPING will peel the option 82 information from the replay message sent by
DHCP server, then the message with DHCP configuration information to perform layer 2
forwarding.
37.2 DHCP Snooping Option 82 Configuration Task
List
1. Enable DHCP SNOOPING
2. Enable DHCP Snooping binding function
3. Enable DHCP Snooping option 82 binding function
4. Configure trust ports
1. Enable DHCP SNOOPING
Command Explanation
Global mode
ip dhcp snooping enable
no ip dhcp snooping enable
Enable or disable DHCP SNOOPING
function.
2. Enable DHCP Snooping binding function
Command Explanation
Global mode
ip dhcp snooping binding enable
no ip dhcp snooping binding enable
Enable or disable DHCP SNOOPING
binding function.
3. Enable DHCP Snooping option 82 function
Command Explanation
Global mode
ip dhcp snooping information enable
no ip dhcp snooping information enable
Enable or disable DHCP SNOOPING
option 82 function.
4. Configure trust ports
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