Command Reference Guide

492 | Dynamic Host Configuration Protocol (DHCP)
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ip dhcp relay information-option
c e s
Enable Option 82.
Syntax
ip dhcp relay information-option [remote-id | trust-downstream]
Parameters
Command Modes
CONFIGURATION
Default
Disabled
Command
History
show ip dhcp snooping
c e s
Display the contents of the DHCP binding table or display the interfaces configured with IP
Source Guard.
Syntax
show ip dhcp snooping [binding | source-address-validation]
Parameters
Command Modes
EXEC
EXEC Privilege
Default
None
Command
History
Related
Commands
remote-id
Configure the system to enable remote-id string in Option 82.
trust-downstream
Configure the system to trust Option 82 when it is received from the
previous-hop router.
Version 8.3.5.3. Introduced on S55.
Version 8.3.3.8 Introduced on S60.
Version 8.3.7.0 Introduced on S4810.
Version 8.3.1.0 Introduced on E-Series.
Version 7.8.1.0 Introduced on C-Series and S-Series.
binding
Display the binding table.
source-address-validation
Display the interfaces configured with IP Source Guard.
Version 8.3.1.0 Introduced on E-Series.
Version 7.8.1.0 Introduced on C-Series and S-Series
clear ip dhcp snooping Clear the contents of the DHCP binding table.