Alcatel-Lucent 7710 SR Configuration Manual page 339

Persistence Commands
persistence
Syntax [no] persistence
Context config>system
Description
This command enables the context to configure persistence parameters on the system.
The persistence feature enables state on information learned through DHCP snooping across reboots
to be retained. This information includes data such as the IP address and MAC binding information,
lease-length information, and ingress sap information (required for VPLS snooping to identify the
ingress interface).
If persistence is enabled when there are no DHCP relay or snooping commands enabled, it will
simply create an empty file.
Default
no persistence
dhcp-server
Syntax dhcp-server
Context config>system>persistence
Description This command configures DHCP server persistence parameters.
subscriber-mgmt
Syntax subscriber-mgmt
Context config>system>persistence
Description
This command configures subscriber management persistence parameters.
7710 SR OS Basic System Configuration Guide
System Management
Page 339