dhcp lease-proxy renew-packet through-time

Function

The dhcp lease-proxy renew-packet through-time command configures the maximum number of times that a lease proxy user's client sends lease renewal packets to the DHCP server before the original T1/T2 lease arrives.

The undo dhcp lease-proxy renew-packet through-time command restores the default configuration.

By default, the number of times that a lease proxy user's client sends lease renewal packets to the DHCP server is not specified.

This command is supported only on the NetEngine 8000 F1A.

Format

dhcp lease-proxy renew-packet through-time time-value

undo dhcp lease-proxy renew-packet through-time time-value

Parameters

Parameter	Description	Value
time-value	Specifies the maximum number of times that a lease proxy user's client sends lease renewal packets to the DHCP server before the original T1/T2 lease arrives.	The value is an integer ranging from 1 to 10.

Parameter

Description

Value

time-value

Specifies the maximum number of times that a lease proxy user's client sends lease renewal packets to the DHCP server before the original T1/T2 lease arrives.

The value is an integer ranging from 1 to 10.

Views

BAS interface view (GE), BAS interface view (VE), BAS interface view (trunk)

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bras-control	write

Usage Guidelines

Usage Scenario

After DHCP lease proxy is enabled on a BAS interface, a user's client sends lease renewal packets to the DHCP server only when the original T1 (1/2 of the lease)/T2 (7/8 of the lease) lease arrives. The BRAS directly replies with an ACK message in other cases. If a lease renewal packet contains options that are not supported, the packet is transparently transmitted to the DHCP server and directly processed by the server for lease renewal.

After the dhcp lease-proxy renew-packet through-time command is run, the server renews the lease for a specified number of times before T1 and T2 of the original lease expire. If the number of times the DHCP renews the lease exceeds the specified threshold, lease renewal is not implemented on the server.In an inter-board trunk master/slave main processing board switchover or dual-device hot backup master/slave host switchover scenarios, the BRAS re-calculates the number of lease renewal packets to be transparently transmitted to the DHCP server.

Prerequisites

DHCP lease proxy has been enabled on a BAS interface using the dhcp lease-proxy command.

Precautions

In VS mode, this command is supported only by the admin VS.

Example

# Set the maximum number of times that a lease proxy user's client sends lease renewal packets to the DHCP server before the original T1/T2 lease arrives to 3.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet 0/1/1.1
[*HUAWEI] commit
[~HUAWEI-GigabitEthernet0/1/1.1] bas
[~HUAWEI-GigabitEthernet0/1/1.1-bas] dhcp lease-proxy 700
[*HUAWEI-GigabitEthernet0/1/1.1-bas] dhcp lease-proxy renew-packet through-time 3