display nd snooping prefix

Function

The display nd snooping prefix command displays prefix management entries of users.

Format

display nd snooping [ static | dynamic ] prefix [ verbose ]

Parameters

Parameter	Description	Value
static	Displays statically configured prefix management entries.	-
dynamic	Displays dynamically generated prefix management entries.	-
verbose	Displays details about prefix management entries.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

A device can establish a prefix management table which can be used to implement duplicate address detection for users with IPv6 addresses and establish a dynamic ND snooping binding table. A prefix management entry can be statically configured or dynamically generated.

Dynamic generation: The device obtains an RA packet received from an ND snooping trusted interface and automatically generates a prefix management entry based on the RA packet.
Static configuration: When a gateway device does not send RA packets, you can run the nd snooping static-prefix command to configure a static prefix management entry.

You can run the display nd snooping prefix command to check prefix management entries.

Example

# Display prefix management entries of users.

<HUAWEI> display nd snooping prefix 
prefix-table:                                                                                                                       
Prefix                             Length   Valid-Time  Vlan(O/I)/BD   Prefix-Type                                                     
--------------------------------------------------------------------------------                                                    
FC00:1::                           64       -           10  /24/-      static                                                         
FC00:2::                           64       2592000     1   /-/-       dynamic                                                         
--------------------------------------------------------------------------------                                                    
Prefix table total count:      2          Print count:         2

**Table 1** Description of the **display nd snooping prefix** command output
Item	Description
prefix-table	Prefix management table of users.
Prefix	Prefix. The value is a 32-digit hexadecimal number, in the X:X:X:X:X:X:X:X format.
Length	Prefix length. The value is an integer that ranges from 1 to 128.
Valid-Time	Valid lifetime of a prefix. The value ranges from 0 to 4294967295, in seconds.
Vlan(O/I)/BD	VLAN or BD information in a prefix management entry.
Prefix-Type	Type of a prefix management entry. The value can be: static: The prefix management entry is statically configured. dynamic: The prefix management entry is dynamically generated.
Prefix table total count	Total number of entries in the prefix management table.
Print count	Number of displayed prefix management entries.

# Display prefix management entries of users.

<HUAWEI> display nd snooping prefix verbose
prefix-table:
--------------------------------------------------------------------------------
 Prefix                  : FC00:1::                                                                                                 
 Prefix Length           : 64                                                                                                       
 Valid Lifetime(sec)     : -                                                                                                        
 Preferred Lifetime(sec) : -                                                                                                        
 Interface               : -                                                                                                        
 VLAN ID(Outer/Inner)    : 10/24                                                                                                    
 Prefix Type             : static
--------------------------------------------------------------------------------
 Prefix                  : FC00:2::
 Prefix Length           : 64
 Valid Lifetime(sec)     : 2592000
 Preferred Lifetime(sec) : 2592000
 Interface               : GE0/0/1
 VLAN ID(Outer/Inner)    : 1/-
 Prefix Type             : dynamic
--------------------------------------------------------------------------------
Prefix table total count:      2          Print count:         2

**Table 2** Description of the **display nd snooping prefix verbose** command output
Item	Description
prefix-table	Prefix management table of users.
Prefix	Prefix. The value is a 32-digit hexadecimal number, in the X:X:X:X:X:X:X:X format.
Prefix Length	Prefix length. The value is an integer that ranges from 1 to 128.
Valid Lifetime(sec)	Valid lifetime of a prefix. The value ranges from 0 to 4294967295, in seconds.
Preferred Lifetime(sec)	Preferred lifetime of a prefix. The value ranges from 0 to 4294967295, in seconds.
Interface	Interface information in a prefix management entry.
VLAN ID(Outer/Inner)	VLAN information in a prefix management entry.
Prefix-Type	Type of a prefix management entry. The value can be: static: The prefix management entry is statically configured. dynamic: The prefix management entry is dynamically generated.
Prefix table total count	Total number of entries in the prefix management table.
Print count	Number of printed entries.