Configuration procedure
# Enable SAVI.
<SwitchB> system-view [SwitchB] ipv6 savi strict
# Enable IPv6.
[SwitchB] ipv6
# Globally enable DHCPv6 snooping.
[SwitchB] ipv6 dhcp snooping enable
# Assign interfaces Ethernet 1/0/1, Ethernet 1/0/2, and Ethernet 1/0/3 to VLAN 2.
[SwitchB] vlan 2 [SwitchB-vlan2] port ethernet 1/0/1 ethernet 1/0/2 ethernet 1/0/3
# Enable DHCPv6 snooping in VLAN 2.
[SwitchB-vlan2] ipv6 dhcp snooping vlan enable [SwitchB] quit
# Configure interface Ethernet 1/0/1 as a DHCP snooping trusted port.
[SwitchB] interface ethernet 1/0/1 [SwitchB-Ethernet1/0/1] ipv6 dhcp snooping trust [SwitchB-Ethernet1/0/1] quit
# Enable link-local address ND snooping and ND detection.
[SwitchB] ipv6 nd snooping enable link-local [SwitchB] vlan 2 [SwitchB-vlan2] ipv6 nd snooping enable [SwitchB-vlan2] ipv6 nd detection enable [SwitchB-vlan2] quit
# Configure the dynamic IPv6 source guard binding function on downlink ports Ethernet 1/0/2 and Ethernet 1/0/3.
[SwitchB] interface ethernet 1/0/2 [SwitchB-Ethernet1/0/2] ipv6 verify source ipv6-address mac-address [SwitchB-Ethernet1/0/2] quit [SwitchB] interface ethernet 1/0/3 [SwitchB-Ethernet1/0/3] ipv6 verify source ipv6-address mac-address [SwitchB-Ethernet1/0/3] quit