H3C Technologies H3C S12500 Series Switches - Manual (Page 203)

189
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the port as trusted. ipv6 dhcp snooping trust
By default, all ports of the device
with DHCPv6 snooping globally
enabled are untrusted.
Configuring the maximum number of DHCPv6
snooping entries an interface can learn
Perform this optional task to prevent an interface from learning too many DHCPv6 snooping entries and
to save system resources.
To configure the maximum number of DHCPv6 snooping entries an interface can learn:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the maximum
number of DHCPv6 snooping
entries that the interface can
learn.
ipv6 dhcp snooping
max-learning-num number
Optional.
By default, the number of DHCPv6
snooping entries learned by an
interface is not limited.
Displaying and maintaining DHCPv6 snooping
Task Command Remarks
Display DHCPv6 snooping
trusted ports. display ipv6 dhcp snooping trust [ | { begin |
exclude | include } regular-expression ]
Available in any view.
Display DHCPv6 snooping
entries.
display ipv6 dhcp snooping user-binding
{ ipv6-address | dynamic } [ | { begin | exclude |
include } regular-expression ]
Available in any view.
Clear DHCPv6 snooping
entries. reset ipv6 dhcp snooping user-binding
{ ipv6-address | dynamic } Available in user
view.
DHCPv6 snooping configuration example
IMPORTANT:
By default, Ethernet, VLAN, and aggregate interfaces are down. To configure such an interface, bring the
interface up by executing the undo shutdown command.