Reference Guide
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.3.1.0 Introduced on the E-Series.
Version 8.2.1.0 Introduced on the C-Series and S-Series.
Related 
Commands
show ip dhcp snooping — displays the contents of the DHCP binding table.
ip dhcp relay
Enable Option 82.
S4820T
Syntax
ip dhcp relay information-option [remote-id | trust-downstream]
Parameters
remote-id Configure the system to enable the remote-id string in option-82.
trust-downstream Configure the system to trust Option 82 when it is received from the 
previous-hop router.
Defaults Disabled
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, refer to the 
relevant 
FTOS Command Line Reference Guide
.
The following is a list of the FTOS version history for this command.
Version 9.2(0.2) Introduced on the Z9000.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.7.0 Introduced on the S4810.
Version 8.3.1.0 Introduced on the E-Series.
Version 7.8.1.0 Introduced on the C-Series and S-Series.
ip dhcp snooping
Enable DHCP snooping globally.
S4820T
Syntax
[no] ip dhcp snooping
Defaults Disabled
Command Modes CONFIGURATION
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