Configuring Dhcpv6 Snooping - H3C S3100 Series Operation Manual

To do...
Enter Layer-2 Ethernet interface
view
Configure the ports requiring no
user legality check as ND trusted
ports
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...
Enter system view
Enable DHCPv6 snooping
Enter Ethernet interface view
Specify the port as trusted
Configure the maximum number of
DHCPv6 snooping entries an
interface can learn
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.
Use the command
interface interface-type
interface-number
ipv6 nd detection trust
Use the command...
system-view
dhcp-snooping ipv6 enable
interface interface-type
interface-number
dhcp-snooping ipv6 trust
dhcp-snooping ipv6
max-learning-num number
1-20
Remarks
—
Optional
A port is ND untrusted by default
Remarks
—
Required
Disabled by default.
—
Required
Untrusted by default.
Optional
By default, the number of DHCPv6
snooping entries an interface can
learn is unlimited.