Besides, you can configure the circuit ID to
be a string of up to 63 characters.
Switch(config-if-PORT-PORT)#
ip dhcp snooping option
Enable the selected interfaces’ DHCP
Option 82 / DHCPv6 Option 37 relay agent.
Switch(config-if-PORT-PORT)#
ip dhcp snooping trust
Enable the selected interfaces as DHCP
Option 82 / DHCPv6 Option 37 trust ports.
Switch(config-if-PORT-PORT)#
ip dhcp snooping server-trust
Enable the selected interfaces as
DHCP/DHCPv6 server trust ports.
Note : A port / ports cannot be
configured as option 82 trust and server
trust at the same time.
Switch(config)# interface
[port_list]
Enter several discontinuous port numbers
separated by commas or a range of ports
with a hyphen. For example:1,3 or 2-4
Switch(config-if-PORT-PORT)#
no ip dhcp snooping circuit
Disable the selected interfaces’ DHCP
Option 82 / DHCPv6 Option 37 Manual
Circuit Id.
Switch(config-if-PORT-PORT)#
no ip dhcp snooping circuit
formatted
Disable the Formatted Option 82 / DHCPv6
Option 37 Circuit Id for the selected
interfaces.
Switch(config-if-PORT-PORT)#
no ip dhcp snooping circuit id
Clear DHCP Option 82 / DHCPv6 Option
37 Circuit Id.
Switch(config-if-PORT-PORT)#
no ip dhcp snooping option
Disable the selected interfaces’ DHCP
Option 82 / DHCPv6 Option 37 relay agent.
Switch(config-if-PORT-PORT)#
no ip dhcp snooping trust
Reset the selected interfaces back to non-
DHCP Option 82 / DHCPv6 Option 37 trust
ports.
Switch(config-if-PORT-PORT)#
no ip dhcp snooping server-trust
Reset the selected interfaces back to non-
DHCP/DHCPv6 server trust ports.
Examples of DHCP & Interface
Switch(config)# interface 1-3
Enter several discontinuous port numbers
separated by commas or a range of ports
with a hyphen. For example:1,3 or 2-4
Switch(config-if-1-3)# ip dhcp snooping
option
Enable the selected interfaces’ DHCP
Option 82 / DHCPv6 Option 37 relay agent.
Switch(config-if-1-3)# ip dhcp snooping trust
Configure the selected interfaces as DHCP
Option 82 / DHCPv6 Option 37 trust ports.