DHCPv6 configuration commands 1

display ipv6 dhcp duid· 1

display ipv6 dhcp relay server-address 1

display ipv6 dhcp relay statistics 2

ipv6 dhcp relay server-address 4

reset ipv6 dhcp relay statistics 5

 

display ipv6 dhcp duid

Syntax

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

View

Any view

Default 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.

Description

Use the display ipv6 dhcp duid command to display the DUID of the local router.

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 relay server-address

Syntax

display ipv6 dhcp relay server-address { all | interface interface-type interface-number } [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

all: Displays all DHCPv6 server address information.

interface interface-type interface-number: Displays DHCPv6 server address information of the 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.

Description

Use the display ipv6 dhcp relay server-address command to display information about DHCPv6 server addresses specified on the DHCPv6 relay agent.

Examples

# Display all the DHCPv6 server address information.

<Sysname> display ipv6 dhcp relay server-address all

Interface: GE3/1/1

Server address(es)                             Output Interface

1::1

FF02::1:2                                      GE3/1/3

 

Interface: GE3/1/2

Server address(es)                             Output Interface

1::1

FF02::1:2                                      GE3/1/3

# Display DHCPv6 server address information of interface GigabitEthernet 3/1/1.

<Sysname> display ipv6 dhcp relay server-address GigabitEthernet 3/1/1

Interface: GE3/1/1

Server address(es)                             Output Interface

1::1

FF02::1:2                                      GE3/1/3

Table 1 Output description

Field	Description
Interface	Interface that serves as the DHCPv6 relay agent
Server address(es)	DHCPv6 server address(es) specified on the interface
Output Interface	Outgoing interface of DHCPv6 packets

 

display ipv6 dhcp relay statistics

Syntax

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

View

Any view

Default 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.

Description

Use the display ipv6 dhcp relay statistics command to display packet statistics on the DHCPv6 relay agent.

Related commands: reset ipv6 dhcp relay statistics.

Examples

# Display packet statistics on the DHCPv6 relay agent.

<Sysname> display ipv6 dhcp relay statistics

Packets dropped               :  4

    Error                     :  4

    Excess of rate limit      :  0

Packets received              :  14

    SOLICIT                   :  0

    REQUEST                   :  0

    CONFIRM                   :  0

    RENEW                     :  0

    REBIND                    :  0

    RELEASE                   :  0

    DECLINE                   :  0

    INFORMATION-REQUEST       :  7

    RELAY-FORWARD             :  0

    RELAY-REPLY               :  7

Packets sent                  :  14

    ADVERTISE                 :  0

    RECONFIGURE               :  0

    REPLY                     :  7

    RELAY-FORWARD             :  7

    RELAY-REPLY               :  0

Table 2 Output description

Field	Description
Packets dropped	Number of discarded packets
Error	Number of discarded error packets
Excess of rate limit	Number of packets discarded due to excess of rate limit
Packets received	Number of received packets
SOLICIT	Number of received solicit packets
REQUEST	Number of received request packets
CONFIRM	Number of received confirm packets
RENEW	Number of received renew packets
REBIND	Number of received rebind packets
RELEASE	Number of received release packets
DECLINE	Number of received decline packets
INFORMATION-REQUEST	Number of received information request packets
RELAY-FORWARD	Number of received relay-forward packets
RELAY-REPLY	Number of received relay-reply packets
Packets sent	Number of sent packets
ADVERTISE	Number of sent advertise packets
RECONFIGURE	Number of sent reconfigure packets
REPLY	Number of sent reply packets
RELAY-FORWARD	Number of sent Relay-forward packets
RELAY-REPLY	Number of sent Relay-reply packets

 

ipv6 dhcp relay server-address

Syntax

ipv6 dhcp relay server-address ipv6-address [ interface interface-type interface-number ]

undo ipv6 dhcp relay server-address ipv6-address [ interface interface-type interface-number ]

View

Interface view

Default level

2: System level

Parameters

ipv6-address: IPv6 address of the DHCPv6 server.

interface interface-type interface-number: Specifies an outgoing interface for DHCPv6 packets.

Description

Use the ipv6 dhcp relay server-address command to enable DHCPv6 relay agent on the interface and specify a DHCPv6 server.

Use the undo ipv6 dhcp relay server-address command to remove the DHCPv6 server from the interface.

By default, DHCPv6 relay agent is disabled and no DHCPv6 server is specified on the interface.

Upon receiving a request from a DHCPv6 client, the interface that operates as a DHCPv6 relay agent encapsulates the request into a Relay-forward message and forwards the message to the specified DHCPv6 server, which then assigns an IPv6 address and other configuration parameters to the DHCPv6 client.

Note that:

·           Executing the ipv6 dhcp relay server-address command repeatedly can specify multiple DHCPv6 servers, and up to eight DHCP servers can be specifed for an interface. After receiving requests from DHCPv6 clients, the DHCPv6 relay agent forwards the reqests to all the specified DHCPv6 servers.

·           If the DHCPv6 server address is a link-local address or link-scoped multicast address on the local link, you need to specify an outgoing interface; otherwise, DHCPv6 packets may fail to be forwarded to the DHCPv6 server.

·           Removing all the specified DHCPv6 server addresses from an interface with the undo ipv6 dhcp relay server-address command disables DHCPv6 relay agent on the interface.

Related commands: display ipv6 dhcp relay server-address.

Examples

# Enable DHCPv6 relay agent on GigabitEthernet 3/1/1, and specify the DHCPv6 server address as 2001:1::3.

<Sysname> system-view

[Sysname] interface GigabitEthernet 3/1/1

[Sysname-GigabitEthernet3/1/1] ipv6 dhcp relay server-address 2001:1::3

reset ipv6 dhcp relay statistics

Syntax

reset ipv6 dhcp relay statistics

View

User view

Default level

1: Monitor level

Parameters

None

Description

Use the reset ipv6 dhcp relay statistics command to clear packets statistics on the DHCPv6 relay agent.

After this command is executed, the packets statistics is displayed as 0 when you use the display ipv6 dhcp relay statistics command.

Related commands: display ipv6 dhcp relay statistics.

Examples

# Clear packet statistics on the DHCPv6 relay agent.

<Sysname> reset ipv6 dhcp relay statistics