configure ospf restart-helper

configure ospf [vlan [all | vlan-name] | area area-identifier | virtual-link router-identifier area-identifier] restart-helper [none | planned | unplanned | both]

Description

Configures the router as a graceful OSPF restart helper router.

Syntax Description

all Specifies all VLANs
vlan-name Specifies a VLAN name.
area-identifier Specifies an OSPF area.
router-identifier Specifies the router ID of the remote router of the virtual link.
none Do not act as a graceful OSPF restart helper router.
planned Only act as a graceful OSPF restart helper router for planned restarts.
unplanned Only act as a graceful OSPF restart helper router for unplanned restarts.
both Act as a graceful OSPF restart helper router for both planned and unplanned restarts.

Default

The router default is none.

Usage Guidelines

This command configures the router as a graceful OSPF restart helper router for a single or multiple routers. When the router is acting as a helper, it will continue to advertise the restarting router as if it was fully adjacent.

One OSPF interface may not help more than one restarting router. An OSPF interface may not enter helper mode when the router is performing a graceful restart. All the interfaces to a neighbor router must be configured as graceful restart helpers, or the router will not support graceful restart for its neighbor.

Example

The following command configures a router to be a graceful OSPF helper router for planned restarts for all routers in area 10.20.30.40:

configure ospf area 10.20.30.40 restart-helper planned

History

This command was first available in ExtremeXOS 11.3.

Platform Availability

This command is available on platforms with Base license, or higher, as described in the Switch Engine 32.2 Feature License Requirements document.