Chapter 27
| IP Interface Commands
ND Snooping
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packet to the target host. If it receives an NA packet in response, it knows that the
target still exists and updates the lifetime of the binding; otherwise, it deletes the
binding.
This section describes commands used to configure ND Snooping.
ipv6 nd snooping This command enables ND snooping globally or on a specified VLAN or range of
VLANs. Use the no form to disable this feature.
Syntax
[no] ipv6 nd snooping [vlan {vlan-id | vlan-range}]
vlan-id - VLAN ID. (Range: 1-4094)
vlan-range - A consecutive range of VLANs indicated by the use a hyphen,
or a random group of VLANs with each entry separated by a comma.
Default Setting
Disabled
Table 159: ND Snooping Commands
Command Function Mode
ipv6 nd snooping Enables ND snooping globally or on a specified VLAN or
range of VLANs
GC
ipv6 nd snooping auto-detect Enables automatic validation of binding table entries by
periodically sending NS messages and awaiting NA
replies
GC
ipv6 nd snooping auto-detect
retransmit count
Sets the number of times to send an NS message to
determine if a binding is still valid
GC
ipv6 nd snooping auto-detect
retransmit interval
Sets the interval between sending NS messages to
determine if a binding is still valid
GC
ipv6 nd snooping prefix
timeout
Sets the time to wait for an RA message before deleting
an entry in the prefix table
GC
ipv6 nd snooping max-
binding
Sets the maximum number of address entries which can
be bound to a port
IC
ipv6 nd snooping trust 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
IC
clear ipv6 nd snooping
binding
Clears all entries in the address binding table PE
clear ipv6 nd snooping prefix Clears all entries in the prefix table PE
show ipv6 nd snooping Shows configuration settings for ND snooping PE
show ipv6 nd snooping
binding
Shows entries in the binding table PE
show ipv6 nd snooping prefix Show entries in the prefix table PE
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