dhcpv6-server send-solicit-speed
Function
The dhcpv6-server send-solicit-speed command configures the rate at which Solicit packets are sent to the DHCPv6 server.
The undo dhcpv6-server send-solicit-speed command restores the default configuration.
By default, the rate at which Solicit packets are sent to the DHCPv6 server is not specified.
This command is supported only on the NetEngine 8000 F1A.
Format
dhcpv6-server { ipv6-address [ vpn-instance vpn-instance ] | interface { ifname | iftype ifnum } } send-solicit-speed packet-number time-value
undo dhcpv6-server { ipv6-address [ vpn-instance vpn-instance ] | interface { ifname | iftype ifnum } } [ send-solicit-speed packet-number time-value ]
Parameters
| Parameter | Description | Value |
|---|---|---|
| ipv6-address |
Specifies the IPv6 address of the DHCPv6 server. |
The address is a 32-digit hexadecimal number. |
| vpn-instance vpn-instance |
Specifies the name of a VPN instance. |
The value is a string of 1 to 31 case-sensitive characters, spaces not supported. In addition, the VPN instance name must not be _public_. When double quotation marks are used around the string, spaces are allowed in the string. |
| interface ifname |
Specifies the name of the outbound interface for sending DHCPv6 packets. |
- |
| interface iftype |
Specifies the type of the outbound interface for sending DHCPv6 packets. |
- |
| interface ifnum |
Specifies the number of the outbound interface for sending DHCPv6 packets. |
- |
| packet-number |
Specifies the number of Solicit packets that can be sent within a period. |
The value is an integer ranging from 1 to 65535. |
| time-value |
Specifies a period of time. |
The value is an integer ranging from 1 to 10, in seconds. |
Usage Guidelines
Usage Scenario
To protect the remote DHCPv6 server against attacks, run the dhcpv6-server send-solicit-speed command to limit the rate at which Solicit packets are sent to the DHCPv6 server.
Prerequisites
The remote DHCPv6 server has been configured in the DHCPv6 server group.
Configuration Impact
The more Solicit packets are sent to the DHCPv6 server within a specified period, the higher the user access rate.
Precautions
In VS mode, this command is supported only by the admin VS.
Example
<HUAWEI> system-view [~HUAWEI] dhcpv6-server group huawei [~HUAWEI-dhcpv6-server-group-huawei] dhcpv6-server destination 2001:db8:1::1 [~HUAWEI-dhcpv6-server-group-huawei] quit [~HUAWEI] dhcpv6-server 2001:db8:1::1 send-solicit-speed 100 3