When DHCP snooping receives DHCP
packets, it will process these packets
according to whether Option 82 included,
processing strategy of user configuration
and fill pattern, and then forward them to
DHCP server. Three strategies are
available: replace, keep and drop.
Three strategies are available for this device:
Replace: When DHCP relay receives DHCP packets with Option 82, the previous Option 82 information
will be replaced by the default contents on this device and forwarded. When DHCP relay receives DHCP
packets without Option 82, the default contents on this device will be added into Option 82.
Keep: When DHCP relay receives DHCP packets with Option 82, the previous Option 82 information will
be kept and forwarded. When DHCP relay receives DHCP packets without Option 82, the default
contents on this device will be added into Option 82.
Drop: When DHCP relay receives DHCP packets with Option 82, the previous Option 82 information will
be discarded. When DHCP relay receives DHCP packets without Option 82, the default contents in this
device will be added into Option 82.
User Binding
Click Device Management -> DHCP Snooping -> User Binding to enter interface below:
Fields on the screen are described below: