Before changing the DHCPv6 server mode to the DHCPv6 relay agent mode on an interface, use the reset ipv6 dhcp server ip-in-use and reset ipv6 dhcp server pd-in-use commands to remove IPv6 address/prefix bindings.

An interface cannot serve as the DHCPv6 relay agent and the DHCPv6 server at the same time. Do not enable the DHCPv6 relay agent, the DHCPv6 server, and the DHCPv6 client on the same interface.

Examples

# Enable the DHCPv6 server on VLAN-interface 10.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ipv6 dhcp select server

# Enable the DHCPv6 relay agent on VLAN-interface 20.

<Sysname> system-view

[Sysname] interface vlan-interface 20

[Sysname-Vlan-interface20] ipv6 dhcp select relay

Related commands

· display ipv6 dhcp relay server-address

· display ipv6 dhcp server

display ipv6 dhcp duid

Use display ipv6 dhcp duid to display the DUID of the local device.

Syntax

display ipv6 dhcp duid

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Usage guidelines

A DHCP unique identifier (DUID) uniquely identifies a DHCPv6 device (DHCPv6 client, server, or relay agent). A DHCPv6 device adds its DUID in a sent packet.

Examples

# Display the DUID of the local device.

<Sysname> display ipv6 dhcp duid

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

DHCPv6 server commands

address range

Use address range to specify a non-temporary IPv6 address range in a DHCPv6 address pool for dynamic allocation.

Use undo address range to remove the non-temporary IPv6 address range in the address pool.

Syntax

address range start-ipv6-address end-ipv6-address [ preferred-lifetime preferred-lifetime valid-lifetime valid-lifetime ]

undo address range

Default

No non-temporary IPv6 address range is configured.

Views

DHCPv6 address pool view

Predefined user roles

network-admin

mdc-admin

Parameters

start-ipv6-address: Specifies the start IPv6 address.

end-ipv6-address: Specifies the end IPv6 address.

preferred-lifetime preferred-lifetime: Specifies the preferred lifetime for the non-temporary IPv6 addresses. The value ranges from 60 to 4294967295 seconds and defaults to 604800 seconds (seven days).

valid-lifetime valid-lifetime: Specifies the valid lifetime for the non-temporary IPv6 addresses. The value ranges from 60 to 4294967295 seconds and defaults to 2592000 seconds (30 days). The valid lifetime cannot be shorter than the preferred lifetime.

Usage guidelines

When no non-temporary IPv6 address range is specified, all unicast addresses on the subnet specified by the network command in address pool view are assignable. If a non-temporary IPv6 address range is specified, only the IPv6 addresses in the IPv6 address range are assignable.

You can specify only one non-temporary IPv6 address range in an address pool. If you use the address range command multiple times, the most recent configuration takes effect.

The non-temporary IPv6 address range specified by the address range command must be on the subnet specified by the network command.

Examples

# Configure a non-temporary IPv6 address range from 3ffe:501:ffff:100::10 through 3ffe:501:ffff:100::31 in address pool 1.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 1

[Sysname-dhcp6-pool-1] network 3ffe:501:ffff:100::/64

[Sysname-dhcp6-pool-1] address range 3ffe:501:ffff:100::10 3ffe:501:ffff:100::31

Related commands

· display ipv6 dhcp pool

· network

· temporary address range

display ipv6 dhcp pool

Use display ipv6 dhcp pool to display information about a DHCPv6 address pool.

Syntax

display ipv6 dhcp pool [ pool-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

pool-name: Displays information about the specified DHCPv6 address pool. The pool name is a case-insensitive string of 1 to 63 characters. If you do not specify any pool name, the command displays information about all DHCPv6 address pools.

Examples

# Display information about DHCPv6 address pool 1.

<Sysname> display ipv6 dhcp pool 1

DHCPv6 pool: 1

Network: 3FFE:501:FFFF:100::/64

Preferred lifetime 604800, valid lifetime 2592000

Prefix pool: 1

Preferred lifetime 24000, valid lifetime 36000

Addresses:

Range: from 3FFE:501:FFFF:100::1

to 3FFE:501:FFFF:100::99

Preferred lifetime 70480, valid lifetime 200000

Total address number: 153

Available: 153

In-use: 0

Temporary addresses:

Range: from 3FFE:501:FFFF:100::200

to 3FFE:501:FFFF:100::210

Preferred lifetime 60480, valid lifetime 259200

Total address number: 17

Available: 17

In-use: 0

Static bindings:

DUID: 0003000100e0fc000001

IAID: 0000003f

Prefix: 3FFE:501:FFFF:200::/64

Preferred lifetime 604800, valid lifetime 2592000

DUID: 0003000100e0fc00cff1

IAID: 00000001

Address: 3FFE:501:FFFF:2001::1/64

Preferred lifetime 604800, valid lifetime 2592000

DNS server addresses:

2::2

Domain name:

aaa.com

SIP server addresses:

5::1

SIP server domain names:

bbb.com

Table 1 Command output

Field	Description
DHCPv6 pool	Name of the DHCPv6 address pool.
Network	IPv6 subnet for dynamic IPv6 address allocation.
Prefix pool	Prefix pool referenced by the address pool.
Preferred lifetime	Preferred lifetime in seconds.
valid lifetime	Valid lifetime in seconds.
Addresses	Non-temporary IPv6 address range.
Range	IPv6 address range for dynamic allocation.
Total address number	Total number of IPv6 addresses.
Available	Total number of available IPv6 addresses.
In-use	Total number of assigned IPv6 addresses.
Temporary addresses	Temporary IPv6 address range for dynamic allocation.
Static bindings	Static bindings configured in the address pool.
DUID	Client DUID.
IAID	Client IAID. If no IAID is configured, this field displays Not configured.
Prefix	IPv6 address prefix.
Address	Static IPv6 address.
DNS server addresses	DNS server address.
Domain name	Domain name.
SIP server addresses	SIP server address.
SIP server domain names	Domain name of the SIP server.

display ipv6 dhcp prefix-pool

Use display ipv6 dhcp prefix-pool to display information about a prefix pool.

Syntax

display ipv6 dhcp prefix-pool [ prefix-pool-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

prefix-pool-number: Displays detailed information about a prefix pool specified by its number in the range of 1 to 128. If you do not specify any prefix pool, the command displays brief information about all prefix pools.

Examples

# Display brief information about all prefix pools.

<Sysname> display ipv6 dhcp prefix-pool

Prefix-pool Prefix Available In-use Static

1 5::/64 64 0 0

# Display detailed information about prefix pool 1.

<Sysname> display ipv6 dhcp prefix-pool 1

Prefix: 5::/64

Assigned length: 70

Total prefix number: 64

Available: 64

In-use: 0

Static: 0

Table 2 Command output

Field	Description
Prefix-pool	Prefix pool number.
Prefix	Prefix specified in the prefix pool.
Available	Number of available prefixes.
In-use	Number of assigned prefixes.
Static	Number of statically bound prefixes.
Assigned length	Length of assigned prefixes.
Total prefix number	Number of prefixes.

display ipv6 dhcp server

Use display ipv6 dhcp server to display DHCPv6 server configuration information.

Syntax

display ipv6 dhcp server [ interface interface-type interface-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface interface-type interface-number: Displays DHCPv6 server configuration information on the specified interface. If you do not specify any interface, the command displays DHCPv6 server configuration information on all interfaces.

Examples

# Display DHCPv6 server configuration information on all interfaces.

<Sysname> display ipv6 dhcp server

Interface Pool

Vlan-interface2 1

Vlan-interface3 global

# Display DHCPv6 server configuration information on the interface VLAN-interface 2.

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

Using pool: 1

Preference value: 0

Allow-hint: Enabled

Rapid-commit: Disabled

Table 3 Command output

Field	Description
Interface	Interface enabled with DHCPv6 server.
Pool	Address pool applied to the interface. If no address pool is applied to the interface, global is displayed. The DHCPv6 server selects a global address pool to assign a prefix, an address, and other configuration parameters to a client.
Using pool	Address pool applied to the interface. If no address pool is applied to the interface, global is displayed. The DHCPv6 server selects a global address pool to assign a prefix, an address, and other configuration parameters to a client.
Preference value	Server preference in the DHCPv6 Advertise message. The value ranges from 0 to 255. The bigger the value is, the higher preference the server has.
Allow-hint	Indicates whether desired address/prefix assignment is enabled.
Rapid-commit	Indicates whether rapid address/prefix assignment is enabled.

display ipv6 dhcp server conflict

Use display ipv6 dhcp server conflict to display information about IPv6 address conflicts.

Syntax

display ipv6 dhcp server conflict [ address ipv6-address ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

address ipv6-address: Displays conflict information for the specified IPv6 address. If you do not specify any IPv6 address, this command displays information about all IPv6 address conflicts.

Usage guidelines

The DHCPv6 server creates IP address conflict information in the following conditions:

· The DHCPv6 client sends a DECLINE packet to the DHCPv6 server to inform the server of an IPv6 address conflict.

· The DHCPv6 server discovers that the only assignable address in the address pool is its own IPv6 address.

Examples

# Display information about all address conflicts.

<Sysname> display ipv6 dhcp server conflict

IPv6 address Detect time

2001::1 Apr 25 16:57:20 2007

1::1:2 Apr 25 17:00:10 2007

Table 4 Command output

Field	Description
IPv6 address	Conflicted IPv6 address.
Detect time	Time when the conflict was discovered.

Related commands

reset ipv6 dhcp server conflict

display ipv6 dhcp server expired

Use display ipv6 dhcp server expired to display lease expiration information.

Syntax

display ipv6 dhcp server expired [ address ipv6-address | pool pool-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

address ipv6-address: Displays lease expiration information for the specified IPv6 address.

pool pool-name: Displays lease expiration information for the address pool specified by its name, a case-insensitive string of 1 to 63 characters.

Usage guidelines

If you do not specify any parameter, the command displays lease expiration information for all IPv6 address pools.

DHCPv6 assigns the expired IPv6 addresses to DHCPv6 clients when all available addresses have been assigned.

Examples

# Display all lease expiration information.

<Sysname> display ipv6 dhcp server expired

IPv6 address DUID Lease expiration

2001:3eff:fe80:4caa: 3030-3066-2e65-3230-302e- Apr 25 17:10:47 2007

37ee:7:1 3130-3234-2d45-7468-6572-

6e65-7430-2f31

Table 5 Command output

Field	Description
IPv6 address	Expired IPv6 address.
DUID	Client DUID bound to the expired IPv6 address.
Lease expiration	Time when the lease expired.

Related commands

reset ipv6 dhcp server expired

display ipv6 dhcp server ip-in-use

Use display ipv6 dhcp server ip-in-use to display binding information for assigned IPv6 addresses.

Syntax

display ipv6 dhcp server ip-in-use [ address ipv6-address | pool pool-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

address ipv6-address: Displays binding information for the specified IPv6 address.

pool pool-name: Displays binding information for the IPv6 address pool specified by its name, a case-insensitive string of 1 to 63 characters.

Usage guidelines

If you do not specify any parameter, the command displays binding information for all assigned IPv6 addresses.

Examples

# Display binding information for all assigned IPv6 address.

<Sysname> display ipv6 dhcp server ip-in-use

Pool: 1

IPv6 address Type Lease expiration

2:1::1 Auto(O) Jul 10 19:45:01 2008

Pool: 2

IPv6 address Type Lease expiration

1:1::2 Static(F) Not available

Pool: 3

IPv6 address Type Lease expiration

1:2::1f1 Static(O) Oct 9 09:23:31 2008

# Display binding information about all assigned IPv6 addresses for the specified DHCPv6 address pool.

<Sysname> display ipv6 dhcp server ip-in-use pool 1

Pool: 1

IPv6 address Type Lease expiration

2:1::1 Auto(O) Jul 10 22:22:22 2008

3:1::2 Static(C) Jan 1 11:11:11 2008

# Display binding information for the specified IPv6 address.

<Sysname> display ipv6 dhcp server ip-in-use address 2:1::3

Pool: 1

Client: FE80::C800:CFF0:FE18:0

Type: Auto(O)

DUID: 00030001CA000C180000

IAID: 0x00030001

IPv6 address: 2:1::3

Preferred lifetime 400, valid lifetime 500

Expires at Jul 10 09:45:01 2008 (288 seconds left)

Table 6 Command output

Field	Description
Pool	DHCPv6 address pool.
IPv6 address	IPv6 address assigned.
Type	IPv6 address binding types: · Static(F)—Free static binding whose IPv6 address has not been assigned. · Static(O)—Offered static binding whose IPv6 address has been selected and sent by the DHCPv6 server in a DHCP-OFFER packet to the client. · Static(C)—Committed static binding whose IPv6 address has been assigned to the client. · Auto(O)—Offered dynamic binding whose IPv6 address has been dynamically selected by the DHCPv6 server and sent in a DHCP-OFFER packet to the DHCPv6 client. · Auto(C)—Committed dynamic binding, whose IP address has been dynamically assigned to the DHCPv6 client.
Lease-expiration	Time when the lease of the IPv6 address will expire. If the lease expires after the year 2100, this field displays Expires after 2100. For an unassigned static binding, this field displays Not available.
Client	IPv6 address of the DHCPv6 client. For an unassigned static binding, this field is blank.
DUID	Client DUID.
IAID	Client IAID. For an unassigned static binding without IAID specified, this field displays N/A.
Preferred lifetime	Preferred lifetime in seconds of the IPv6 address.
valid lifetime	Valid lifetime in seconds of the IPv6 address.
Expires at	Time when the lease of an IPv6 address will expire. If the lease expires after the year 2100, this field displays Expires after 2100.

Related commands

reset ipv6 dhcp server ip-in-use

display ipv6 dhcp server pd-in-use

Use display ipv6 dhcp server pd-in-use to display binding information for the assigned IPv6 prefixes.

Syntax

display ipv6 dhcp server pd-in-use [ pool pool-name | prefix prefix/prefix-len ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

pool pool-name: Displays IPv6 prefix binding information for the DHCPv6 address pool specified by its name, a case-insensitive string of 1 to 63 characters.

prefix prefix/prefix-len: Displays binding information for the specified IPv6 prefix. The value for the prefix length ranges from 1 to 128.

Usage guidelines

If you do not specify any parameter, the command displays all IPv6 prefix binding information.

Examples

# Display all IPv6 prefix binding information.

<Sysname> display ipv6 dhcp server pd-in-use

Pool: 1

IPv6 prefix Type Lease expiration

2:1::/24 Auto(O) Jul 10 19:45:01 2008

Pool: 2

IPv6 prefix Type Lease expiration

1:1::/64 Static(F) Not available

Pool: 3

IPv6 prefix Type Lease expiration

1:2::/64 Static(O) Oct 9 09:23:31 2008

# Display IPv6 prefix binding information for DHCPv6 address pool 1.

<Sysname> display ipv6 dhcp server pd-in-use pool 1

Pool: 1

IPv6 prefix Type Lease expiration

2:1::/24 Auto(O) Jul 10 22:22:22 2008

3:1::/64 Static(C) Jan 1 11:11:11 2008

# Display binding information for the IPv6 prefix 2:1::3/24.

<Sysname> display ipv6 dhcp server pd-in-use prefix 2:1::3/24

Pool: 1

Client: FE80::C800:CFF:FE18:0

Type: Auto(O)

DUID: 00030001CA000C180000

IAID: 0x00030001

IPv6 prefix: 2:1::/24

Preferred lifetime 400, valid lifetime 500

Expires at Jul 10 09:45:01 2008 (288 seconds left)

Table 7 Command output

Field	Description
IPv6 prefix	IPv6 prefix assigned.
Type	Prefix binding types: · Static(F)—Free static binding whose IPv6 prefix has not been assigned. · Static(O)—Offered static binding whose IPv6 prefix has been selected and sent by the DHCPv6 server in a DHCP-OFFER packet to the client. · Static(C)—Committed static binding whose IPv6 prefix has been assigned to the client. · Auto(O)—Offered dynamic binding whose IPv6 prefix has been dynamically selected by the DHCPv6 server and sent in a DHCP-OFFER packet to the DHCPv6 client. · Auto(C)—Committed dynamic binding whose IPv6 prefix has been dynamically selected by the DHCPv6 server and sent in a DHCP-OFFER packet to the DHCPv6 client.
Pool	Address pool.
Lease-expiration	Time when the lease of the IPv6 prefix will expire. If the lease will expire after the year 2100, this field displays Expires after 2100. For an unassigned static binding, this field displays Not available.
Client	IPv6 address of the DHCPv6 client. For an unassigned static binding, this field is blank.
DUID	Client DUID.
IAID	Client IAID. For an unassigned static binding without IAID, this field displays N/A.
Preferred lifetime	Preferred lifetime in seconds of the IPv6 prefix.
valid lifetime	Valid lifetime in seconds of the IPv6 prefix.
Expires at	Time when the lease of the prefix will expire.If the lease expires after the year 2100, this field displays Expires after 2100.

Related commands

reset ipv6 dhcp server pd-in-use

display ipv6 dhcp server statistics

Use display ipv6 dhcp server statistics to display DHCPv6 packet statistics on the DHCPv6 server.

Syntax

display ipv6 dhcp server statistics [ pool pool-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

pool pool-name: Displays DHCPv6 packet statistics for the DHCPv6 address pool specified by its name, a case-insensitive string of 1 to 63 characters. If you do not specify any pool, the command displays DHCPv6 packet statistics for all address pools.

Examples

# Display all DHCPv6 packet statistics on the DHCPv6 server.

<Sysname> display ipv6 dhcp server statistics

Bindings:

Ip-in-use : 1

Pd-in-use : 0

Expired : 0

Conflict : 0

Packets received : 1

Solicit : 1

Request : 0

Confirm : 0

Renew : 0

Rebind : 0

Release : 0

Decline : 0

Information-request : 0

Relay-forward : 0

Packets dropped : 0

Packets sent : 0

Advertise : 0

Reconfigure : 0

Reply : 0

Relay-reply : 0

Table 8 Command output

Field	Description
Bindings	Number of bindings: · Ip-in-use—Total number of address bindings. · Pd-in-use—Total number of prefix bindings. · Expired—Total number of expired address bindings.
Conflict	Total number of conflicted addresses. If statistics about a specific address pool are displayed, this field is not displayed.
Packets received	Number of messages received by the DHCPv6 server. The message types include: · Solicit. · Request. · Confirm. · Renew. · Rebind. · Release. · Decline. · Information-request. · Relay-forward. If statistics about a specific address pool are displayed, this field is not displayed.
Packets dropped	Number of packets discarded. If statistics about a specific address pool are displayed, this field is not displayed.
Packets sent	Number of messages sent by the DHCPv6 server. The message types include: · Advertise. · Reconfigure. · Reply. · Relay-reply. If statistics about a specific address pool are displayed, this field is not displayed.

Related commands

reset ipv6 dhcp server statistics

dns-server

Use dns-server to specify a DNS server in a DHCPv6 address pool.

Use undo dns-server to remove the specified DNS server from a DHCPv6 address pool.

Syntax

dns-server ipv6-address

undo dns-server ipv6-address

Default

No DNS server address is specified.

Views

DHCPv6 address pool view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv6-address: Specifies the IPv6 address of a DNS server.

Usage guidelines

You can use the dns-server command to specify up to eight DNS servers in an address pool. A DNS server specified earlier has a higher preference.

Examples

# Specify the DNS server address 2:2::3 in DHCPv6 address pool 1.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 1

[Sysname-dhcp6-pool-1] dns-server 2:2::3

Related commands

display ipv6 dhcp pool

domain-name

Use domain-name to specify a domain name suffix in a DHCPv6 address pool.

Use undo domain-name to remove the domain name suffix.

Syntax

domain-name domain-name

undo domain-name

Default

No domain name suffix is specified.

Views

DHCPv6 address pool view

Predefined user roles

network-admin

mdc-admin

Parameters

domain-name: Specifies a domain name suffix, a case-insensitive string of 1 to 50 characters.

Usage guidelines

You can configure only one domain name suffix in an address pool.

If you use the domain-name command multiple times, the most recent configuration takes effect.

Examples

# Specify the domain name aaa.com in DHCPv6 address pool 1.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 1

[Sysname-dhcp6-pool-1] domain-name aaa.com

Related commands

display ipv6 dhcp pool

ipv6 dhcp pool

Use ipv6 dhcp pool to create a DHCPv6 address pool and enter its view. If the pool has been created, you directly enter its view.

Use undo ipv6 dhcp pool to remove the specified DHCPv6 address pool.

Syntax

ipv6 dhcp pool pool-name

undo ipv6 dhcp pool pool-name

Default

No DHCPv6 address pool is configured.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

pool-name: Specifies a name for the DHCPv6 address pool, a case-insensitive string of 1 to 63 characters.

Usage guidelines

A DHCPv6 address pool stores IPv6 address/prefix and other configuration parameters to be assigned to DHCPv6 clients.

When you remove a DHCPv6 address pool, the binding information for the assigned IPv6 addresses and prefixes in the address pool is also removed.

Examples

# Create a DHCPv6 address pool named pool1 and enter its view.

<Sysname> system-view

[Sysname] ipv6 dhcp pool pool1

[Sysname-dhcp6-pool-pool1]

Related commands

· display ipv6 dhcp pool

· ipv6 dhcp server apply pool

ipv6 dhcp prefix-pool

Use ipv6 dhcp prefix-pool to create a prefix pool, specify the prefix/prefix length for the pool, and specify the assigned prefix length.

Use undo ipv6 dhcp prefix-pool to remove the specified prefix pool.

Syntax

ipv6 dhcp prefix-pool prefix-pool-number prefix prefix/prefix-len assign-len assign-len

undo ipv6 prefix-pool prefix-pool-number

Default

No prefix pool is configured.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

prefix-pool-number: Specifies a prefix pool number in the range of 1 to 128.

prefix prefix/prefix-len: Specifies a prefix/prefix length for the pool. The value for the prefix-len argument ranges from 1 to 128.

assign-len assign-len: Specifies the assigned prefix length. The value ranges from 1 to 128, and must be greater than or equal to prefix-len. The difference between assign-len and prefix-len must be greater than 16.

Usage guidelines

Different prefix pools cannot overlap.

You cannot modify an existing prefix pool. To change the prefix pool settings, you must delete the prefix pool first.

Removing a prefix pool clears all prefix bindings from the prefix pool.

Examples

# Create prefix pool named 1, and specify the prefix 2001:0410::/32 with assigned prefix length being 42. Prefix pool 1 contains 1024 prefixes from 2001:0410::/42 to 2001:0410:FFC0::/42.

<Sysname> system-view

[Sysname] ipv6 dhcp prefix-pool 1 prefix 2001:0410::/32 assign-len 42

Related commands

· display ipv6 dhcp prefix-pool

· prefix-pool

ipv6 dhcp server

Use ipv6 dhcp server to configure global address assignment on an interface. The server on the interface uses a global address pool to assign configuration information to a client.

Use undo ipv6 dhcp server to restore the default.

Syntax

ipv6 dhcp server { allow-hint | preference preference-value | rapid-commit } *

undo ipv6 dhcp server

Default

The server does not support desired address/prefix assignment or rapid address/prefix assignment. The server preference is set to 0.

Views

Interface view

Predefined user roles

network-admin

mdc-admin

Parameters

allow-hint: Enables desired address/prefix assignment.

preference preference-value: Specifies the server preference in Advertise messages, in the range of 0 to 255. The default value is 0. A greater value specifies a higher preference.

rapid-commit: Enables rapid address/prefix assignment involving two messages.

Usage guidelines

The allow-hint keyword enables the server to assign the desired address or prefix to the requesting client. If the desired address or prefix is not included in any global address pool or any prefix pool, or is already assigned to another client, the server assigns the client a free address or a prefix. If the allow-hint keyword is not specified, the server ignores the desired address or prefix, and selects an address or prefix from a global address pool.

If you use the ipv6 dhcp server and ipv6 dhcp server apply pool commands on the same interface, the ipv6 dhcp server apply pool command takes effect.

Examples

# Configure global address assignment on the interface VLAN-interface 2 to support desired address/prefix assignment and rapid address/prefix assignment and set the server preference to the highest 255.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] ipv6 dhcp server allow-hint preference 255 rapid-commit

Related commands

· display ipv6 dhcp server

· ipv6 dhcp select

ipv6 dhcp server apply pool

Use ipv6 dhcp server apply pool to apply a DHCPv6 address pool to an interface.

Use undo ipv6 dhcp server apply pool to remove the DHCPv6 address pool from the interface.

Syntax

ipv6 dhcp server apply pool pool-name [ allow-hint | preference preference-value | rapid-commit ] *

undo ipv6 dhcp server apply pool

Default

No address pool is applied to an interface.

Views

Interface view

Predefined user roles

network-admin

mdc-admin

Parameters

pool-name: Specifies a DHCPv6 address pool by its name, a case-insensitive string of 1 to 63 characters.

allow-hint: Enables desired address/prefix assignment.

preference preference-value: Specifies the server preference in Advertise messages, in the range of 0 to 255. The default value is 0. A greater value specifies a higher preference.

rapid-commit: Enables rapid address/prefix assignment involving two messages.

Usage guidelines

Upon receiving a DHCPv6 request, the DHCPv6 server selects an IPv6 address or prefix from the address pool applied to the receiving interface. If no address pool is applied, the server selects an IPv6 address or prefix from a global address pool that matches the IPv6 address of the receiving interface or the DHCPv6 relay agent.

The allow-hint keyword enables the server to assign the desired address or prefix to the client. If the desired address or prefix does not exist or is already assigned to another client, the server assigns a free address or prefix. If allow-hint is not specified, the server ignores the desired address or prefix, and assigns a free address or prefix.

Only one address pool can be applied to an interface. If you use the command multiple times, the most recent configuration takes effect.

A non-existing address pool can be applied to an interface, but the server cannot assign any prefix, address, or other configuration information from the address pool until the address pool is created.

Examples

# Apply address pool 1 to VLAN-interface 2, configure the address pool to support desired address/prefix assignment and address/prefix rapid assignment, and set the preference to 255.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] ipv6 dhcp server apply pool 1 allow-hint preference 255 rapid-commit

Related commands

· display ipv6 dhcp server

· ipv6 dhcp pool

· ipv6 dhcp select

ipv6 dhcp server forbidden-address

Use ipv6 dhcp server forbidden-address to exclude specifiec IPv6 addresses from dynamic allocation.

Use undo ipv6 dhcp server forbidden-address to remove the configuration.

Syntax

ipv6 dhcp server forbidden-address start-ipv6-address [ end-ipv6-address ]

undo ipv6 dhcp server forbidden-address start-ipv6-address [ end-ipv6-address ]

Default

Except for the DHCPv6 server address, all IPv6 addresses in a DHCPv6 address pool are assignable.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

start-ipv6-address: Specifies the start IPv6 address.

end-ipv6-address: Specifies the end IPv6 address, which cannot be lower than start-ipv6-address. If no end IPv6 address is specified, only the start IPv6 address is excluded from dynamic allocation. If it is specified, the IP addresses from start-ipv6-address through end-ipv6-address are all excluded from dynamic allocation.

Usage guidelines

You can exclude multiple IP address ranges from dynamic allocation.

The IPv6 addresses of some devices such as the gateway and FTP server cannot be assigned to clients. Use this command to exclude such addresses from dynamic allocation.

If the excluded IPv6 address is in a static binding, the address can still be assigned to the client.

The address or address range specified in the undo form of the command must be the same as the address or address range specified in the command. To remove an IP address that has been specified as part of an address range, you must remove the entire address range.

Examples

# Exclude IPv6 addresses of 2001:10:110::1 through 2001:10:110::20 from dynamic assignment.

<Sysname> system-view

[Sysname] ipv6 dhcp server forbidden-address 2001:10:110::1 2001:10:110::20

Related commands

· ipv6 dhcp server forbidden-prefix

· static-bind

ipv6 dhcp server forbidden-prefix

Use ipv6 dhcp server forbidden-prefix to exclude specific IPv6 prefixes from dynamic allocation.

Use undo ipv6 dhcp server forbidden-prefix to remove the configuration.

Syntax

ipv6 dhcp server forbidden-prefix start-prefix/prefix-len [ end-prefix/prefix-len ]

undo ipv6 dhcp server forbidden-prefix start-prefix/prefix-len [ end-prefix/prefix-len ]

Default

No IPv6 prefixes in the DHCPv6 prefix pool are excluded from dynamic allocation.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

start-prefix/prefix-len: Specifies the start IPv6 prefix. The prefix-len argument specifies the prefix length, ranging from 1 to 128.

end-prefix/prefix-len: Specifies the end IPv6 prefix. The prefix-len argument specifies the prefix length, ranging from 1 to 128. The value for end-prefix cannot be lower than that for start-prefix. If this argument is not specified, only the start-prefix/prefix-len is excluded from dynamic allocation. If it is specified, the prefixes from start-prefix/prefix-len to end-prefix/prefix-len are all excluded.

Usage guidelines

You can exclude multiple IPv6 prefix ranges from dynamic allocation.

If the excluded IPv6 prefix is in a static binding, the prefix can still be assigned to the client.

The prefix or prefix range specified in the undo form of the command must be the same as the prefix or prefix range specified in the command. To remove a prefix that has been specified as part of a prefix range, you must remove the entire prefix range.

Examples

# Exclude IPv6 prefixes from 2001:3e11::/32 through 2001:3eff::/32 from dynamic allocation.

<Sysname> system-view

[Sysname] ipv6 dhcp server forbidden-prefix 2001:3e11::/32 2001:3eff::/32

Related commands

· ipv6 dhcp server forbidden-address

· static-bind

network

Use network to specify an IPv6 subnet for dynamic allocation in a DHCPv6 address pool.

Use undo network to remove the specified IPv6 subnet.

Syntax

network prefix/prefix-length [ preferred-lifetime preferred-lifetime valid-lifetime valid-lifetime ]

undo network

Default

No IPv6 subnet is specified in an address pool.

Views

DHCPv6 address pool view

Predefined user roles

network-admin

mdc-admin

Parameters

prefix/prefix-length: Specifies the IPv6 subnet for dynamic allocation. The value for prefix-length ranges from 1 to 128.

preferred-lifetime preferred-lifetime: Specifies the preferred lifetime. The value ranges from 60 to 4294967295 seconds and defaults to 604800 seconds (seven days).

valid-lifetime valid-lifetime: Specifies the valid lifetime. The value ranges from 60 to 4294967295 seconds and defaults to 2592000 seconds (30 days). The valid lifetime must be longer than or equal to the preferred lifetime.

Usage guidelines

You can specify only one subnet for a DHCPv6 address pool. If you use the network command multiple times, the most recent configuration takes effect.

You cannot modify or remove the network configuration after using the address range temporary and address range commands.

Modifying or removing the network configuration removes the addresses in the current address pool.

Examples

# Specify the subnet 3ffe:501:ffff:100::/64 in DHCPv6 address pool 1.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 1

[Sysname-dhcp6-pool-1] network 3ffe:501:ffff:100::/64

Related commands

· address range

· display ipv6 dhcp pool

· temporary address range

option

Use option to configure a self-defined DHCPv6 option in a DHCPv6 address pool.

Use undo option to remove a self-defined DHCPv6 option from a DHCPv6 address pool.

Syntax

option code hex hex-string

undo option code

Default

No self-defined DHCPv6 option is configured in a DHCPv6 address pool.

Views

DHCPv6 address pool view

Predefined user roles

network-admin

mdc-admin

Parameters

code: Specifies a number for the self-defined option, in the range of 21 to 65535, excluding 25 through 26, 37 through 40, and 43 through 48.

hex hex-string: Specifies the content of the option, a hex string of even numbers from 2 to 256.

Usage guidelines

The DHCPv6 server fills the self-defined option with the specified hex string and sends it in a response to the client.

If you use the option command multiple times with the same code specified, the most recent configuration takes effect.

You can self-define options for the following purposes:

· Add newly released options.

· Add options for which the vendor defines the contents, for example, Option 43.

· Add options for which the CLI does not provide a dedicated configuration command like dns-server. For example, you can use the option 31 hex 00c80000000000000000000000000001 command to define the NTP server address 200::1 for DHCP clients.

· Add all option values if the actual requirement exceeds the limit for a dedicated option configuration command. For example, the dns-server command can specify up to eight DNS servers. To specify more than eight DNS servers, you must use the option 23 command to define all DNS servers.

If a DHCPv6 option is specified by both the dedicated command and the option command, the DHCPv6 server preferentially assigns the content specified by the dedicated command. For example, if a DNS server address is specified by the dns-server command and the option 23 command, the server uses the address specified by dns-server command.

Examples

# Configure Option 23 that specifies a DNS server address 2001:f3e0::1 in DHCPv6 address pool 1.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 1

[Sysname-dhcp6-pool-1] option 23 hex 2001f3e0000000000000000000000001

Related commands

· display ipv6 dhcp pool

· dns-server

· domain-name

· sip-server

prefix-pool

Use prefix-pool to apply a prefix pool to a DHCPv6 address pool, so the DHCPv6 server can dynamically select a prefix from the prefix pool for a client.

Use undo prefix-pool to remove the configuration.

Syntax

prefix-pool prefix-pool-number [ preferred-lifetime preferred-lifetime valid-lifetime valid-lifetime ]

undo prefix-pool prefix-pool-number

Default

No prefix pool is applied to an address pool.

Views

DHCPv6 address pool view

Predefined user roles

network-admin

mdc-admin

Parameters

prefix-pool-number: Specifies a prefix pool by its number in the range of 1 to 128.

preferred-lifetime preferred-lifetime: Specifies the preferred lifetime in the range of 60 to 4294967295 seconds. The default value is 604800 seconds (seven days).

valid-lifetime valid-lifetime: Specifies the valid lifetime in the range of 60 to 4294967295 seconds. The default value is 2592000 seconds (30 days). The valid lifetime must be longer than or equal to the preferred lifetime.

Usage guidelines

Only one prefix pool can be applied to an address pool.

You can apply a prefix pool that has not been created to an address pool. The setting takes effect after the prefix pool is created.

You cannot modify prefix pools that have been applied. To change the prefix pool for an address pool, you must remove the prefix pool application first.

Examples

# Apply prefix pool 1 to address pool 1, and use the default preferred lifetime and valid lifetime.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 1

[Sysname-dhcp6-pool-1] prefix-pool 1

# Apply prefix pool 2 to address pool 2, and set the preferred lifetime to one day and the valid lifetime to three days.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 2

[Sysname-dhcp6-pool-2] prefix-pool 2 preferred-lifetime 86400 valid-lifetime 259200

Related commands

· display ipv6 dhcp pool

· ipv6 dhcp prefix-pool

reset ipv6 dhcp server conflict

Use reset ipv6 dhcp server conflict to clear IPv6 address conflict information.

Syntax

reset ipv6 dhcp server conflict [ address ipv6-address ]

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

address ipv6-address: Clears conflict information for the specified IPv6 address. If no IPv6 address is specified, the command clears all IPv6 address conflict information.

Usage guidelines

Address conflicts occur when dynamically assigned IP addresses have been statically configured for other hosts. After the conflicts are resolved, you can use the reset ipv6 dhcp server conflict command to clear conflict information so that the conflicted addresses can be assigned to clients.

Examples

# Clear all IPv6 address conflict information.

<Sysname> reset ipv6 dhcp server conflict

Related commands

display ipv6 dhcp server conflict

reset ipv6 dhcp server expired

Use reset ipv6 dhcp server expired to clear binding information for lease-expired IPv6 addresses.

Syntax

reset ipv6 dhcp server expired [ address ipv6-address | pool pool-name ]

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

address ipv6-address: Clears binding information for the specified lease-expired IPv6 address.

pool pool-name: Clears binding information for lease-expired IPv6 addresses in the address pool specified by its name, a case-insensitive string of 1 to 63 characters.

Usage guidelines

Using this command without any parameter clears binding information for all lease-expired IPv6 addresses.

Examples

# Clear binding information for expired IPv6 address 2001:f3e0::1.

<Sysname> reset ipv6 dhcp server expired address 2001:f3e0::1

Related commands

display ipv6 dhcp server expired

reset ipv6 dhcp server ip-in-use

Use reset ipv6 dhcp server ip-in-use to clear binding information for assigned IPv6 addresses.

Syntax

reset ipv6 dhcp server ip-in-use [ address ipv6-address | pool pool-name ]

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

address ipv6-address: Clears binding information for the assigned IPv6 address.

pool pool-name: Clears binding information for assigned IPv6 addresses in the address pool specified by its name, a case-insensitive string of 1 to 63 characters.

Usage guidelines

Using this command without any parameter clears binding information for all IPv6 addresses.

If you use this command to clear information for an assigned static binding, the static binding becomes an unassigned static binding.

Examples

# Clear binding information for all assigned IPv6 addresses.

<Sysname> reset ipv6 dhcp server ip-in-use

# Clears binding information for assigned IPv6 addresses in DHCPv6 address pool 1.

<Sysname> reset ipv6 dhcp server ip-in-use pool 1

# Clears binding information for the assigned IPv6 address 2001:0:0:1::1.

<Sysname> reset ipv6 dhcp server ip-in-use address 2001:0:0:1::1

Related commands

display ipv6 dhcp server ip-in-use

reset ipv6 dhcp server pd-in-use

Use reset ipv6 dhcp server pd-in-use to clear binding information for assigned IPv6 prefixes.

Syntax

reset ipv6 dhcp server pd-in-use [ pool pool-name | prefix prefix/prefix-len ]

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

pool pool-name: Clears binding information for assigned IPv6 prefixes in the address pool specified by its name, a case-insensitive string of 1 to 63 characters.

prefix prefix/prefix-len: Clears binding information for the specified IPv6 prefix. The value for the prefix length ranges from 1 to 128.

Usage guidelines

Using this command without any parameter clears binding information for all assigned IPv6 prefixes.

If you use this command to clear information for an assigned static binding, the static binding becomes an unassigned static binding.

Examples

# Clear binding information for all assigned IPv6 prefixes.

<Sysname> reset ipv6 dhcp server pd-in-use

# Clears binding information for assigned IPv6 prefixes in DHCPv6 address pool 1.

<Sysname> reset ipv6 dhcp server pd-in-use pool 1

# Clears binding information for the assigned IPv6 prefix 2001:0:0:1::/64.

<Sysname> reset ipv6 dhcp server pd-in-use prefix 2001:0:0:1::/64

Related commands

display ipv6 dhcp server pd-in-use

reset ipv6 dhcp server statistics

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

Syntax

reset ipv6 dhcp server statistics

Views

User view

Predefined user roles

network-admin

mdc-admin

Examples

# Clear DHCPv6 server statistics.

<Sysname> reset ipv6 dhcp server statistics

Related commands

display ipv6 dhcp server statistics

sip-server

Use sip-server to specify the IPv6 address or domain name of a SIP server in the DHCPv6 address pool.

Use undo sip-server to remove a SIP server.

Syntax

sip-server { address ipv6-address | domain-name domain-name }

undo sip-server { address ipv6-address | domain-name domain-name }

Default

No SIP server address or domain name is specified.

Views

DHCPv6 address pool view

Predefined user roles

network-admin

mdc-admin

Parameters

address ipv6-address: Specifies the IPv6 address of a SIP server.

domain-name domain-name: Specifies the domain name of a SIP server, a case-insensitive string of 1 to 50 characters.

Usage guidelines

You can specify up to eight SIP server addresses and eight SIP server domain names in an address pool. A SIP server that is specified earlier has a higher preference.

Examples

# Specify the SIP server address 2:2::4 in DHCPv6 address pool 1.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 1

[Sysname-dhcp6-pool-1] sip-server address 2:2::4

# Specify the SIP server domain name bbb.com in DHCPv6 address pool 1.

[Sysname-dhcp6-pool-1] sip-server domain-name bbb.com

Related commands

display ipv6 dhcp pool

static-bind

Use static-bind to statically bind a client DUID or client IAID to an IPv6 address or prefix in the DHCPv6 address pool.

Use undo static-bind to remove a static binding.

Syntax

static-bind { address ipv6-address/addr-prefix-length | prefix prefix/prefix-len } duid duid [ iaid iaid ] [ preferred-lifetime preferred-lifetime valid-lifetime valid-lifetime ]

undo static-bind { address ipv6-address/addr-prefix-length | prefix prefix/prefix-len }

Default

No static binding is configured in a DHCPv6 address pool.

Views

DHCPv6 address pool view

Predefined user roles

network-admin

mdc-admin

Parameters

address ipv6-address/addr-prefix-length: Specifies the IPv6 address and prefix length. The prefix length ranges from 1 to 128.

prefix prefix/prefix-len: Specifies the prefix and prefix length. The prefix length ranges from 1 to 128.

duid duid: Specifies a client DUID. The value is an even hexadecimal number in the range of 2 to 256.

iaid iaid: Specifies a client IAID. The value is a hexadecimal number in the range of 0 to FFFFFFFF. If no IAID is specified, the server does not match against the client IAID for prefix assignment.

preferred-lifetime preferred-lifetime: Specifies the preferred lifetime of the address or prefix. The value ranges from 60 to 4294967295 seconds and defaults to 604800 seconds (seven days).

valid-lifetime valid-lifetime: Specifies the valid lifetime of the address or prefix. The value ranges from 60 to 4294967295 seconds and defaults to 2592000 seconds (30 days). The valid lifetime cannot be shorter than the preferred lifetime.

Usage guidelines

You can specify multiple static bindings in a DHCPv6 address pool.

An IPv6 address or prefix can be bound to only one DHCPv6 client. You cannot modify bindings that have been created. To change the binding for a DHCPv6 client, you must delete the existing binding first.

Examples

# In address pool 1, bind IPv6 address 2001:0410::/35 to the client DUID 0003000100e0fc005552 and IAID A1A1A1A1.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 1

[Sysname-dhcp6-pool-1] static-bind address 2001:0410::/35 duid 0003000100e0fc005552 iaid A1A1A1A1

# In address pool 1, bind prefix 2001:0410::/35 to the client DUID 00030001CA0006A400 and IAID A1A1A1A1.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 1

[Sysname-dhcp6-pool-1] static-bind prefix 2001:0410::/35 duid 00030001CA0006A400 iaid A1A1A1A1

Related commands

display ipv6 dhcp pool

temporary address range

Use temporary address range to configure a temporary IPv6 address range in a DHCPv6 address pool for dynamic allocation.

Use undo temporary address range to remove the temporary IPv6 address range from the address pool.

Syntax

temporary address range start-ipv6-address end-ipv6-address [ preferred-lifetime preferred-lifetime valid-lifetime valid-lifetime ]

undo temporary address range

Default

No temporary IPv6 address range is configured in an address pool.

Views

DHCPv6 address pool view

Predefined user roles

network-admin

mdc-admin

Parameters

start-ipv6-address: Specifies the start IPv6 address.

end-ipv6-address: Specifies the end IPv6 address.

preferred-lifetime preferred-lifetime: Specifies the preferred lifetime. The value ranges from 60 to 4294967295 seconds and defaults to 604800 seconds (seven days).

valid-lifetime valid-lifetime: Specifies the valid lifetime. The value ranges from 60 to 4294967295 seconds, and defaults to 2592000 seconds (30 days). The valid lifetime cannot be shorter than the preferred lifetime.

Usage guidelines

If you do not execute the temporary address range command, the DHCPv6 server does not support temporary address assignment.

You can configure only one temporary IPv6 address range in an address pool. If you use the command multiple times, the most recent configuration takes effect.

Examples

# In DHCPv6 address pool 1, configure a temporary IPv6 address range from 3ffe:501:ffff:100::50 to 3ffe:501:ffff:100::60.

<Sysname> system-view

[Sysname] ipv6 dhcp pool 1

[Sysname-dhcp6-pool-1] network 3ffe:501:ffff:100::/64

[Sysname-dhcp6-pool-1] temporary address range 3ffe:501:ffff:100::50 3ffe:501:ffff:100::60

Related commands

· display ipv6 dhcp pool

· address range

· network

DHCPv6 relay agent commands

display ipv6 dhcp relay server-address

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

Syntax

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

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface interface-type interface-number: Specifies an interface by its type and number. If you do not specify any interface, the command displays DHCPv6 server addresses on all interfaces enabled with DHCPv6 relay agent.

Examples

# Display DHCPv6 server addresses on all interfaces enabled with DHCPv6 relay agent.

<Sysname> display ipv6 dhcp relay server-address

Interface: Vlan-interface2

Server address Outgoing Interface

2::3

3::4 Vlan-interface4

Interface: Vlan-interface3

Server address Outgoing Interface

2::3

3::4 Vlan-interface4

# Display DHCPv6 server addresses on VLAN-interface 2.

<Sysname> display ipv6 dhcp relay server-address interface vlan-interface 2

Interface: Vlan-interface2

Server address Outgoing Interface

2::3

3::4 Vlan-interface4

Table 9 Command output

Field	Description
Interface	Interface enabled with DHCPv6 relay agent.
Server address	DHCPv6 server address specified on the DHCP relay agent.
Outgoing Interface	Output interface of DHCPv6 packets. If no output interface is specified, the device searches the routing table for the output interface.

Related commands

· ipv6 dhcp relay server-address

· ipv6 dhcp select

display ipv6 dhcp relay statistics

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

Syntax

display ipv6 dhcp relay statistics [ interface interface-type interface-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface interface-type interface-number: Specifies an interface by its type and number. If you do not specify any interface, the command displays DHCPv6 packets statistics on all interfaces enabled with DHCPv6 relay agent.

Examples

# Display DHCPv6 packet statistics on all interfaces enabled with DHCPv6 relay agent.

<Sysname> display ipv6 dhcp relay statistics

Packets dropped : 4

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

# Display DHCPv6 packet statistics on the DHCPv6 relay agent on VLAN-interface 2.

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

Packets dropped : 4

Packets received : 16

Solicit : 0

Request : 0

Confirm : 0

Renew : 0

Rebind : 0

Release : 0

Decline : 0

Information-request : 8

Relay-forward : 0

Relay-reply : 8

Packets sent : 16

Advertise : 0

Reconfigure : 0

Reply : 8

Relay-forward : 8

Relay-reply : 0

Table 10 Command output

Field	Description
Packets dropped	Number of discarded packets.
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.

Related commands

reset ipv6 dhcp relay statistics

ipv6 dhcp relay server-address

Use ipv6 dhcp relay server-address to specify a DHCPv6 server on the DHCPv6 relay agent.

Use undo ipv6 dhcp relay server-address to remove DHCPv6 server addresses.

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 ] ]

Default

No DHCPv6 server address is specified on the DHCPv6 relay agent.

Views

Interface view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv6-address: Specifies the IPv6 address of a DHCPv6 server.

interface interface-type interface-number: Specifies an output interface through which the relay agent forwards the DHCPv6 requests to the DHCPv6 server. If you do not specify any output interface, the relay agent looks up the routing table for an output interface.

Usage guidelines

Upon receiving a request from a DHCPv6 client, the interface encapsulates the request into a Relay-forward message and forwards the message to the specified DHCPv6 server.

You can specify a maximum of eight DHCPv6 servers on an interface. The DHCPv6 relay agent forwards DHCP requests 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 must specify an output interface. If no output interface is specified, DHCPv6 packets might fail to reach the DHCPv6 server.

If you do not specify any IPv6 address, the undo ipv6 dhcp relay server-address command removes all DHCPv6 server addresses specified on the interface.

Do not enable the DHCPv6 client and the DHCPv6 relay agent/DHCPv6 server on the same interface.

Examples

# Enable the DHCPv6 relay agent on VLAN-interface 2 and specify the DHCPv6 server address 2001:1::3.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] ipv6 dhcp select relay

[Sysname-Vlan-interface2] ipv6 dhcp relay server-address 2001:1::3

Related commands

· display ipv6 dhcp relay server-address

· ipv6 dhcp select

reset ipv6 dhcp relay statistics

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

Syntax

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

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

interface interface-type interface-number: Specifies an interface by its type and number. If you do not specify any interface, the command clears all relay agent statistics.

Examples

# Clear packet statistics on the DHCPv6 relay agent.

<Sysname> reset ipv6 dhcp relay statistics

Related commands

display ipv6 dhcp relay statistics

05-Layer 3 - IP Services Command Reference

DHCPv6 commands

DHCPv6 server commands

display ipv6 dhcp prefix-pool

display ipv6 dhcp server

display ipv6 dhcp server conflict

reset ipv6 dhcp relay statistics

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