HPE 5920 series

277
Usage guidelines
Use the DHCPv6 snooping feature together with trusted port configuration. Before trusted ports are
configured, all ports on the DHCPv6 snooping device are untrusted and discard all responses sent
from DHCPv6 servers.
When DHCPv6 snooping is disabled, the device forwards all responses from DHCPv6 servers.
Examples
# Enable DHCPv6 snooping.
<Sysname> system-view
[Sysname] ipv6 dhcp snooping enable
ipv6 dhcp snooping log enable
Use ipv6 dhcp snooping log enable to enable DHCPv6 snooping logging.
Use undo ipv6 dhcp snooping log enable to restore the default.
Syntax
ipv6 dhcp snooping log enable
undo ipv6 dhcp snooping log enable
Default
DHCPv6 snooping logging is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
This command enables the DHCPv6 snooping device to generate DHCPv6 snooping logs and send
them to the information center. For information about the log destination and output rule
configuration in the information center, see Network Management and Monitoring Configuration
Guide.
As a best practice, disable this feature if the log generation affects the device performance.
Examples
# Enable DHCPv6 snooping logging.
<Sysname> system-view
[Sysname] ipv6 dhcp snooping log enable
ipv6 dhcp snooping max-learning-num
Use ipv6 dhcp snooping max-learning-num to set the maximum number of DHCPv6 snooping
entries for an interface to learn.
Use undo ipv6 dhcp snooping max-learning-num to restore the default.
Syntax
ipv6 dhcp snooping max-learning-num number
undo ipv6 dhcp snooping max-learning-num