C
HAPTER
45
| IP Interface Commands
ND Snooping
– 1431 –
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
COMMAND MODE
Global Configuration
COMMAND USAGE
â—† Use this command without any keywords to enable ND snooping
globally on the switch. Use the VLAN keyword to enable ND snooping
on a specific VLAN or a range of VLANs.
â—† Once ND snooping is enabled both globally and on the required VLANs,
the switch will start monitoring RA messages to build an address prefix
table as described below:
â–
If an RA message is received on an untrusted interface, it is
dropped. If received on a trusted interface, the switch adds an entry
in the prefix table according to the Prefix Information option in the
RA message. The prefix table records prefix, prefix length, valid
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
Table 202: ND Snooping Commands (Continued)
Command Function Mode
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