Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.7 - Page 382

ipv6 dhcp snooping database Use the ipv6 dhcp snooping database command to configure the persistent location of the DHCP snooping database. This can be a local or remote file on a TFTP server. Syntax ipv6 dhcp snooping database {local | tftp://hostIP/filename} no ipv6 dhcp snooping database Default Configuration By default, the local database is used. Command Modes Global Configuration mode User Guidelines The DHCP binding database is persistently stored on a configured external server or locally in flash, depending on the user configuration. A row-wise checksum is placed in the text file that is stored on the configured TFTP server. On switch startup, the switch reads the text file and uses the contents to build the DHCP snooping database. If the calculated checksum value equals the stored checksum, the switch uses the entries from the binding file and populates the binding database. Checksum failure or a connection problem to the external configured server causes the switch to lose the bindings and may cause connectivity loss for hosts if IPSG or DAI is enabled. ipv6 dhcp snooping database write-delay Use the ipv6 dhcp snooping database write-delay command to configure the time period between successive writes of the binding database. The binding database is used to persistently store the DHCP bindings. Use the no form of the command to return the write delay to the default value. Syntax ipv6 dhcp snooping database write-delay seconds Layer 2 Switching Commands 382