The OSPFv2 graceful restart (GR) helper is enabled by default, and can be disabled on a routing device.
device# configure terminal
device(config)# router ospf
device(config-router-ospf-vrf-default-vrf)# graceful-restart helper-disable
The following example disables the GR helper.
device# configure terminal device(config)# router ospf device(config-router-ospf-vrf-default-vrf)# graceful-restart helper-disable