DHCPv6 configuration commands· 1

DHCPv6 common configuration commands 1

display ipv6 dhcp duid· 1

display ipv6 dhcp option-group· 1

DHCPv6 client configuration commands 3

display ipv6 dhcp client 3

display ipv6 dhcp client statistics 4

ipv6 address dhcp-alloc· 6

ipv6 dhcp client pd· 6

reset ipv6 dhcp client statistics 7

 

DHCPv6 common configuration commands

display ipv6 dhcp duid

Use display ipv6 dhcp duid to display the DHCP unique identifier (DUID) of the local device.

Syntax

display ipv6 dhcp duid [ | { begin | exclude | include } regular-expression ]

Views

Any view

Default command level

1: Monitor level

Parameters

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Examples

# Display the DUID of the device.

<Sysname> display ipv6 dhcp duid

The DUID of this device: 0003-0001-00e0-fc00-5552

display ipv6 dhcp option-group

Use display ipv6 dhcp option-group to display information about DHCPv6 option groups, including static and dynamic option groups.

Syntax

display ipv6 dhcp option-group [ option-group-number ] [ | { begin | exclude | include } regular-expression ]

Views

Any view

Default command level

1: Monitor level

Parameters

option-group-number: Specifies a DHCPv6 option group by its ID, in the range of 1 to 100. If no option group is specified, the command displays information about all DHCPv6 option groups.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Usage guidelines

A dynamic DHCPv6 option group is automatically created by a DHCPv6 client when the client obtains an IPv6 address/prefix and network parameters.

Examples

# Display information about all DHCPv6 option groups.

<Sysname> display ipv6 dhcp option-group

DHCPv6 option group: 1

  Type: Dynamic

  DNS server addresses:

    1::1

  Domain names:

    aaa.com

  SIP server addresses:

    2::1

  SIP server domain names:

    bbb.com

  DS-Lite addresses:

    2::3

  Options:

    Code: 23

      Length: 2 bytes

      Hex: ABCD

    Code: 33

      Length: 2 bytes

      Hex: DEFA

Table 1 Command output

Field	Description
DHCPv6 option group	DHCPv6 option group number.
Type	DHCPv6 option group type: Dynamic.
DNS server addresses	IP address of the DNS server.
Domain names	Domain name suffix.
SIP server addresses	IP address of the SIP server.
SIP server domain names	Domain name of the SIP server.
DS-Lite addresses	IP address of the Address Family Transition Router (AFTR)
Options	User-defined options.
Code	Code of the self-defined option.
Length	Self-defined option string length in bytes.
Hex	Self-defined option content represented by a hexadecimal string.

 

Related commands

·          ipv6 address dhcp-alloc

·          ipv6 dhcp client pd

DHCPv6 client configuration commands

display ipv6 dhcp client

Use display ipv6 dhcp client to display DHCPv6 client information.

Syntax

display ipv6 dhcp client [ interface interface-type interface-number ] [ | { begin | exclude | include } regular-expression ]

Views

Any view

Default command level

1: Monitor level

Parameters

interface interface-type interface-number: Displays the DHCPv6 client information of a specified interface.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Usage guidelines

If no parameters are specified, the command displays DHCPv6 client information of all interfaces.

Examples

# Display the DHCPv6 client information of VLAN-interface 2.

<Sysname> display ipv6 dhcp client interface vlan-interface 2

Vlan-interface2 is in stateless DHCPv6 client mode

State is OPEN

Preferred Server:

    Reachable via address    :  FE80::213:7FFF:FEF6:C818

    DUID                     :  0003000100137ff6c818

    DNS servers              :  1:2:3::5

                                1:2:4::7

    Domain names             :  abc.com

Table 2 Command output

Field	Description
in stateless DHCPv6 client mode	Indicates the client is in the stateless DHCPv6 configuration mode.
State is OPEN	Current state of the DHCPv6 client: ·         INIT—After enabled, the DHCPv6 client enters the INIT state. ·         IDLE—After receiving an RA message with the "M" flag set to 0 and "O" flag set to 1 and enabled with stateless DHCPv6, the DHCPv6 client enters the IDLE state. ·         INFO-REQUESTING—The DHCPv6 client is requesting configuration information. ·         OPEN—The DHCPv6 client successfully obtained configuration parameters and completed stateless configuration based on the obtained parameters.
Preferred Server	Information about the DHCPv6 server selected by the DHCPv6 client.
Reachable via address	Reachable address, which is the link local address of the DHCPv6 server or relay agent.
DUID	DUID of the DHCPv6 server.
DNS servers	DNS server address sent by the DHCPv6 server.
Domain names	Domain name information sent by the DHCPv6 server.

 

display ipv6 dhcp client statistics

Use display ipv6 dhcp client statistics to display DHCPv6 client statistics.

Syntax

display ipv6 dhcp client statistics [ interface interface-type interface-number ] [ | { begin | exclude | include } regular-expression ]

Views

Any view

Default command level

1: Monitor level

Parameters

interface interface-type interface-number: Displays the DHCPv6 client statistics of a specified interface.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Usage guidelines

If no parameters are specified, the command displays DHCPv6 client statistics of all interfaces.

Examples

# Display DHCPv6 client statistics of VLAN-interface 2.

<Sysname> display ipv6 dhcp client statistics interface vlan-interface 2

Interface                    :  Vlan-interface2

Packets Received             :  1

         Reply               :  1

         Advertise           :  0

         Reconfigure         :  0

         Invalid             :  0

Packets Sent                 :  5

         Solicit             :  0

         Request             :  0

         Confirm             :  0

         Renew               :  0

         Rebind              :  0

         Information-request :  5

         Release             :  0

         Decline             :  0

Table 3 Command output

Field	Description
Interface	Interface that serves as the DHCPv6 client.
Packets Received	Number of received packets.
Reply	Number of received reply packets.
Advertise	Number of received advertise packets.
Reconfigure	Number of received reconfigure packets.
Invalid	Number of invalid packets.
Packets Sent	Number of sent packets.
Solicit	Number of sent solicit packets.
Request	Number of sent request packets.
Confirm	Number of sent confirm packets.
Renew	Number of sent renew packets.
Rebind	Number of sent rebind packets.
Information-request	Number of sent information request packets.
Release	Number of sent release packets.
Decline	Number of sent decline packets.

 

Related commands

reset ipv6 dhcp client statistics

ipv6 address dhcp-alloc

Use the ipv6 address dhcp-alloc command to configure an interface to use DHCPv6 for IP address acquisition.

Use the undo ipv6 address dhcp-alloc command to cancel an interface from using DHCPv6.

Syntax

ipv6 address dhcp-alloc [ option-group group-number | rapid-commit ] *

undo ipv6 address dhcp-alloc

Default

An interface does not use DHCPv6 for IP address acquisition.

Views

Interface view

Default command level

2: System level

Parameters

option-group option-group-number: Enables the DHCPv6 client to create a dynamic DHCPv6 option group for saving the network parameters, and assigns an ID to the dynamic DHCPv6 option group, in the range of 1 to 100. If no option group ID is specified, the DHCPv6 client does not create any dynamic DHCPv6 option group.

rapid-commit: Enables rapid address and prefix assignment.

Examples

# Configure VLAN-interface 10 to use DHCPv6 for address acquisition, enable rapid address assignment, and specify the ID for the DHCPv6 option group as 1. When the client obtains network parameters, it creates an option group and saves the parameters in the group.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ipv6 address dhcp-alloc rapid-commit option-group 1

ipv6 dhcp client pd

Use ipv6 dhcp client pd to configure an interface to use DHCPv6 for IPv6 prefix acquisition.

Use undo ipv6 dhcp client pd to cancel an interface from using DHCPv6.

Syntax

ipv6 dhcp client pd prefix-number [ option-group group-number | rapid-commit ] *

undo ipv6 dhcp client pd

Default

An interface does not use DHCPv6 for IPv6 prefix acquisition.

Views

Interface view

Default command level

2: System level

Parameters

prefix-number: Specifies an IPv6 prefix ID, in the range of 1 to 1024. The client, after obtaining an IPv6 prefix, automatically assigns it the specified ID.

option-group option-group-number: Enables the DHCPv6 client to create a dynamic DHCPv6 option group for saving the network parameters, and assigns an ID to the dynamic DHCPv6 option group, in the range of 1 to 100. If no option group ID is specified, the DHCPv6 client does not create any dynamic DHCPv6 option group.

rapid-commit: Enables rapid address and prefix assignment.

Examples

# Configure VLAN-interface10 to use DHCPv6 for IPv6 prefix acquisition. Specify the prefix ID as 1, enable the DHCPv6 client to create a dynamic DHCPv6 option group with the ID 1, and enable rapid address and prefix assignment.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ipv6 dhcp client pd 1 rapid-commit option-group 1

reset ipv6 dhcp client statistics

Use reset ipv6 dhcp client statistics to clear DHCPv6 client statistics.

Syntax

reset ipv6 dhcp client statistics [ interface interface-type interface-number ]

Views

User view

Default command level

1: Monitor level

Parameters

interface interface-type interface-number: Clears DHCPv6 client statistics of a specified interface.

Usage guidelines

If no parameters are specified, the command clears DHCPv6 client statistics of all interfaces.

After this command is executed, the packets statistics are displayed as 0 for the display ipv6 dhcp client statistics command output.

Examples

# Clear DHCPv6 client statistics of all interfaces.

<Sysname> reset ipv6 dhcp client statistics

Related commands

display ipv6 dhcp client statistics