dhcpv6-snooping external-storage


dhcpv6-snooping external-storage volume <VOL-NAME> file <FILE-NAME> 
no dhcpv6-snooping external-storage


Configures external storage to be used for backing up IPv6 bindings (used by DHCPv6 snooping) to a file. When configured, the switch stores all the IP bindings in an external storage file so that they are retained after the switch restarts. When the switch restarts, it reads the IPv6 bindings from the configured external storage file to populate its local cache.

The no form of this command disables the saving of IPv6 bindings in an external storage file.

Command context



volume <VOL-NAME>

Specifies the name of the existing external storage volume where the IPv6 bindings file will be saved. Before running the dhcpv6-snooping external-storage volume command, first create the external storage volume using command external-storage <VOLUME-NAME>. See External storage commands in the Command-Line Interface Guide.

file <FILE-NAME>

Specifies the file name to use for storing IPv6 bindings. Maximum 255 characters.


Administrators or local user group members with execution rights for this command.


Configuring IPv6 bindings storage in file ipv6Bindings on existing volume dhcp_snoop:

switch(config)# dhcpv6-snooping external-storage volume dhcp_snoop file ipv6Bindings

Disabling external storage:

switch(config)# no dhcpv6-snooping external-storage