Configuring Dhcpv6 Snooping Entry Auto Backup; Setting The Maximum Number Of Dhcpv6 Snooping Entries - HPE FlexNetwork 10500 Series Configuration Manual

Configuring DHCPv6 snooping entry auto backup

The auto backup feature saves DHCPv6 snooping entries to a backup file, and allows the DHCPv6
snooping device to download the entries from the backup file at reboot. The entries on the DHCPv6
snooping device cannot survive a reboot. The auto backup helps the security features provide
services if these features (such as IP source guard) must use DHCPv6 snooping entries for user
authentication.
IMPORTANT:
If you disable DHCPv6 snooping with the undo ipv6 dhcp snooping enable command, the device
deletes all DHCPv6 snooping entries, including those stored in the backup file.
To configure DHCPv6 snooping entry auto backup:
Step
1. Enter system view.
2. Configure the DHCPv6
snooping device to back
up DHCPv6 snooping
entries to a file.
3. (Optional.) Manually save
DHCPv6 snooping entries
to the backup file.
4. (Optional.) Set the waiting
time after a DHCPv6
snooping entry change for
the DHCPv6 snooping
device to update the
backup file.
Setting the maximum number of DHCPv6
snooping entries
Perform this task to prevent the system resources from being overused.
To set the maximum number of DHCPv6 snooping entries:
Step
1. Enter system view.
2. Enter interface view.
Command
system-view
ipv6 dhcp snooping
binding database
filename { filename | url
url [ username username
[ password { cipher |
simple } string ] ] }
ipv6 dhcp snooping
binding database
update now
ipv6 dhcp snooping
binding database
update interval interval
Command
system-view
interface interface-type
interface-number
230
Remarks
N/A
By default, the DHCPv6 snooping device
does not back up the DHCPv6 snooping
entries.
With this command executed, the DHCPv6
snooping device backs up DHCPv6 snooping
entries immediately and runs auto backup.
This command automatically creates the file if
you specify a non-existent file.
N/A
The default waiting time is 300 seconds.
The waiting period starts when a DHCPv6
snooping entry is learned, updated, or
removed. The DHCPv6 snooping device
updates the backup file when the specified
waiting period is reached. All changed entries
during the period will be saved to the backup
file.
If no DHCPv6 snooping entry changes, the
backup file is not updated.
Remarks
N/A
N/A