3 nd snooping example, Nooping, Xample – PLANET XGS3-24040 User Manual
Page 209

Chapter 28 DHCP Configuration
27-3
4. Set the trust port of the switch
Command
Explanation
Global mode
ipv6 nd snooping trust
no ipv6 nd snooping trust
Set the trust port of the switch.
27.3 ND Snooping Example
Typical example:
The application environment of ND Snooping, the figure is as follows:
Figure 7-1 ND Snooping typical configuration
The configuration explanation:
SW2 is layer 3 switch, it connect to the layer 2 switch SW1, and enable IPv6 function and RA function;
SW1 is layer 2 switch, it enables IPv6 function and ND Snooping, and enable the control function of ND
snooping on the ports which connect three PC nodes.
PC1, PC2, PC3 are three PCs, each PC installed IPv6 protocol and directly connect SW1, the direct ports are
1/1, 1/2, 1/3. Layer 2 switch SW1 enabled ND Snooping. PC1, PC2 and PC3 correctly receive RA router
advertisement packets from SW2. According to the link prefix 2001::/64 of RA packets, three PCs create IPv6
addresses automatically, they are:
PC1: FE80::2AA:FF:FE9A:4CA2, 2001::2AA:FF:FE9A:4CA2, 2001::23:4A:1122:C411;
PC2: FE80::2BB:FF:FE9A:4CA2, 2001::2BB:FF:FE9A:4CA2, 2001::32:4B:2211:11C4;