H3C Technologies H3C S3100 Series Switches - Manual (Page 923)

1-20
To do… Use the command Remarks
Enter Layer-2 Ethernet interface
view interface interface-type
interface-number
—
Configure the ports requiring no
user legality check as ND trusted
ports
ipv6 nd detection trust
Optional
A port is ND untrusted by default
When configuring the ND detection, configure at least one of the following three: the IPv6 static binding
entry, DHCPv6 snooping, or ND snooping. Otherwise, all the ND packets received from ND untrusted
ports are discarded.
Configuring DHCPv6 Snooping
Among the S3100 series Ethernet switches, only the S3100-EI series support DHCPv6 Snooping.
Configuring DHCPv6 snooping
Follow these steps to configure DHCPv6 snooping:
To do… Use the command… Remarks
Enter system view system-view —
Enable DHCPv6 snooping dhcp-snooping ipv6 enable
Required
Disabled by default.
Enter Ethernet interface view
interface interface-type
interface-number
—
Specify the port as trusted dhcp-snooping ipv6 trust
Required
Untrusted by default.
Configure the maximum number of
DHCPv6 snooping entries an
interface can learn
dhcp-snooping ipv6
max-learning-num number
Optional
By default, the number of DHCPv6
snooping entries an interface can
learn is unlimited.
You need to specify the ports connected to the valid DHCPv6 servers as trusted to ensure that DHCPv6
clients can obtain valid IPv6 addresses. The trusted port and the port connected to the DHCPv6 client
must be in the same VLAN.