Configuring Option 18 And Option 37; Configuring Dhcpv6 Snooping Entry Auto Backup - HPE FlexNetwork MSR Series Comware 7 Layer 3 - Ip Services Configuration Manuals

Step
5. Return to system view.
6. Enter interface view.
7. (Optional.) Enable recording
of client information in
DHCPv6 snooping entries.

Configuring Option 18 and Option 37

Step
1. Enter system view.
2. Enter interface view.
3. Enable support for Option
18.
4. (Optional.) Specify the
content as the interface ID.
5. Enable support for Option
37.
6. (Optional.) Specify the
content as the remote ID.

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
Command
quit
interface interface-type
interface-number
ipv6 dhcp snooping binding
record
Command
system-view
interface interface-type
interface-number
ipv6 dhcp snooping option
interface-id enable
ipv6 dhcp snooping option
interface-id [ vlan vlan-id ] string
interface-id
ipv6 dhcp snooping option
remote-id enable
ipv6 dhcp snooping option
remote-id [ vlan vlan-id ] string
remote-id
Command
system-view
ipv6 dhcp snooping
binding database
301
Remarks
N/A
This interface must connect to the
DHCPv6 client.
By default, DHCPv6 snooping
does not record client information.
Remarks
N/A
N/A
By default, Option 18 is not
supported.
By default, the DHCPv6 snooping
device uses its DUID as the
content for Option 18.
By default, Option 37 is not
supported.
By default, the DHCPv6 snooping
device uses its DUID as the
content for Option 37.
Remarks
N/A
By default, the DHCPv6 snooping device
does not back up the DHCPv6 snooping