display dhcpv6 upgrade

Function

The display dhcpv6 upgrade command displays the dhcpv6 upgrade command configuration, including the number of users with new leases, number of users with old leases, number of users with permanent leases, and maximum remaining time for users with old leases to send renewal packets.

This command is supported only on the NetEngine 8000 F1A.

Format

display dhcpv6 upgrade

Parameters

None

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
ipv6pool	read

Usage Guidelines

Usage Scenario

If the device to be upgraded have DHCPv6 users, run the dhcpv6 upgrade command to modify leases of these users to a shorter period, so that DHCPv6 users can get online by sending renewal packets after the device is restarted after the upgrade.

The dhcpv6 upgrade command cannot be saved to the configuration file. You need to run the display dhcpv6 upgrade command to view the dhcpv6 upgrade command configuration. Then you can calculate the restart time of the device based on the number of users with old leases and maximum remaining time for users with old leases to send renewal packets.

Precautions

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

2.This command does not take effect for users enabled with DHCPv6 lease proxy. The configuration does not affect the lease of users enabled with DHCPv6 lease proxy.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display leases of DHCPv6 users.

<HUAWEI> display dhcpv6 upgrade
DHCPv6 upgrade: enable.
Preferred lifetime: 0days 0hours 30minutes
Valid lifetime: 0days 1hours 0minutes
Renew time percent: 50%
Rebind time percent:80%
Renew time: 0days 0hours 15minutes
Rebind time: 0days 0hours 24minutes
Access DHCPv6 user count of new lifetime: 100 
Access DHCPv6 user count of old lifetime: 100
Access DHCPv6 user count of infinite lifetime: 10
Max interval from current for old lifetime DHCPv6 user renew: 0days 0hours 15minutes

**Table 1** Description of the **display dhcpv6 upgrade** command output
Item	Description
DHCPv6 upgrade	Indicates whether the dhcpv6 upgrade command is configured: If this command is configured, enable is displayed. If this command is not configured, disable is displayed.
Preferred lifetime	Indicates the preferred lifetime specified in the dhcpv6 upgrade command.
Valid lifetime	Indicates the valid lifetime specified in the dhcpv6 upgrade command.
Renew time percent	Indicates the renew-time-percent specified in the dhcpv6 upgrade command.
Renew time	Indicates the renewal time calculated by multiplying preferred-lifetime specified in the dhcpv6 upgrade command by renew-time-percent specified in this command.
Rebind time percent	Indicates the rebind-time-percent specified in the dhcpv6 upgrade command.
Rebind time	Indicates the rebinding time calculated by multiplying preferred-lifetime specified in the dhcpv6 upgrade command by rebind-time-percent specified in this command.
Access DHCPv6 user count of new lifetime	Indicates the number of online DHCPv6 users with new leases specified in the dhcpv6 upgrade command.
Access DHCPv6 user count of old lifetime	Indicates the number of online DHCPv6 users using the old lease and the number of DHCPv6 lease proxy users not affected by this command.
Access DHCPv6 user count of infinite lifetime	Indicates the number of online DHCPv6 users with permanent leases. After the BRAS is restarted, these users can get online again only after their terminals are restarted.
Max interval from current for old lifetime DHCPv6 user renew	Indicates the maximum remaining time for online DHCPv6 users(Excluding DHCPv6 lease proxy users) with old leases to send renewal packets.