Chapter 27
| IP Interface Commands
ND Snooping
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ipv6 nd snooping trust This command configures a port as a trusted interface from which prefix
information in RA messages can be added to the prefix table, or NS messages can
be forwarded without validation. Use the no form to restore the default setting.
Syntax
[no] ipv6 nd snooping trust
Default Setting
Not trusted
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
â—† In general, interfaces facing toward to the network core, or toward
routers supporting the Network Discovery protocol, are configured as
trusted interfaces.
â—† RA messages received from a trusted interface are added to the prefix
table and forwarded toward their destination.
â—† NS messages received from a trusted interface are forwarded toward
their destination. Nothing is added to the dynamic user binding table.
Example
Console(config)#interface ethernet 1/1
Console(config-if)#ipv6 nd snooping trust
Console(config-if)#
clear ipv6 nd
snooping binding
This command clears all entries in the dynamic user address binding table.
Syntax
clear ipv6 nd snooping binding
Command Mode
Privileged Exec
Example
Console#clear ipv6 nd snooping binding
Console#show ipv6 nd snooping binding
MAC Address IPv6 Address Lifetime VLAN Interface
-------------- -------------------------------------- ---------- ---- ---------
Console#
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