Disables and enables Intermediate System-to-Intermediate System (IS-IS) graceful restart helper mode.
The graceful restart helper is enabled by default.
IS-IS router configuration mode
IS-IS is supported only on devices based on the DNX chipset family. For a list of such devices, see "Supported Hardware".
The no form of the command re-enables the graceful restart helper if it has been disabled.
The following example disables the IS-IS graceful restart helper.
device# configure terminal device(config)# router isis device(config-isis-router)# graceful-restart helper-disable
The following example re-enables the IS-IS graceful restart helper.
device# configure terminal device(config)# router isis device(config-isis-router)# no graceful-restart helper-disable