Manual
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197 
3. Enable DHCP Snooping binding ARP function 
4. Enable DHCP Snooping option82 function 
Command 
Explanation 
Globe mode 
ip dhcp snooping information enable 
no ip dhcp snooping information 
enable 
Enable/disable  DHCP  Snooping  option  82 
function. 
5. Set the private packet version 
Command 
Explanation 
Globe mode 
ip user private packet version two 
no ip user private packet version two 
To configure/delete the private packet version. 
6. Set DES encrypted key for private packets  
Command 
Explanation 
Globe mode 
enable trustview key 0/7 <password> 
no enable trustview key 
To configure/delete DES encrypted key for private 
packets. 
7. Set helper server address 
Command 
Explanation 
Globe mode 
ip user helper-address A.B.C.D [port 
<udpport>] source <ipAddr> 
(secondary|) 
no ip user helper-address (secondary|) 
Set or delete helper server address. 
8. Set trusted ports 
Command 
Explanation 
Globe mode 
ip dhcp snooping binding arp 
no ip dhcp snooping binding arp 
 Enable or disable the dhcp snooping binding ARP 
function. 
Command 
Explanation 
Port mode 
ip dhcp snooping trust 
Set or delete the DHCP snooping trust attributes of 










