Configuring IPv4 OSPFv2 Global Options in Gaia Clish

Important - In a ClusterClosed Two or more Security Gateways that work together in a redundant configuration - High Availability, or Load Sharing., you must configure all the Cluster Members in the same way.

Global settings apply to all configured OSPF areas, including the backbone and stub areas.

set ospf instance {<1-65535> | default}

      default-ase-cost {<1-6777215> | default}

      default-ase-type {1 | 2}

      force-hellos

            {off | on}

            timer {<2-10> | default}

      graceful-restart-helper {off | on}

      graceful-restart

            {off | on}

            grace-period {<1-1800> | default}

      {off | on}

      rfc1583-compatibility {off | on}

      spf-delay {<1-60> | default}

      spf-holdtime {<1-60> | default}

set ospf

      rfc1583-compatibility {off | on}

      spf-delay {<1-60> | default}

      spf-holdtime {<1-60> | default}

Parameter

Description

instance {<1-65535> | default}

Specifies an OSPF Instance ID to configure.

instance {<1-65535> | default} {off | on}

Disables (off) or enables (on) the specified OSPF Instance.

default-ase-cost {<1-6777215> | default}

Configures a default cost to use when routes from other protocols are redistributed into OSPF as Autonomous System External (ASE) routes.

This default is ignored for any redistributed routes, which already have a cost.

If the route has a cost already specified, that cost takes precedent.

Range: 1-6777215, or default

Default: 1

default-ase-type {1 | 2}

Configures the default route type to use when routes from other protocols are redistributed into OSPF as Autonomous System External (ASE) routes.

This default is ignored for any redistributed routes, which already have a type.

If the route has a type already specified, that type takes precedent.

A type 1 route is internal and its metric can be used directly by OSPF for comparison.

A type 2 route is external and is assumed to have a greater cost than any internal route.

Range: 1, or 2

Default: 1

force-hellos {<options>}

Enabling this feature sends out forced Hello packets at the specified interval when the Dynamic Routing Daemon is busy processing updates or synching data to standby nodes.

These extra Hello packets are in addition to the typical hello packets in OSPF.

This feature is required to maintain neighbor adjacencies when processing large number of updates.

Range: off, on, or timer

Default: off

force-hellos timer {<2-10> | default}

Configures the time between one forced OSPF Hello message to the next.

Range: 2-10 seconds

Default: 5 seconds

graceful-restart-helper {off | on}

Disables (off) or enables (on) the Graceful Restart Helper.

Graceful Restart enables this router to act as a helper for other routers when they undergo a graceful restart.

When a grace LSA is received from a neighbor, the neighbor is kept in the forwarding path with full adjacency till either the grace-period (advertised in the grace LSA) expires, or there is a topology change.

The helper functionality is supported for both planned and unplanned restarts.

Note - Graceful Restart is not compatible with VRRP Preempt Mode. You must disable VRRP Preempt Mode before you enable this option.

Range: off, or on

Default: off

graceful-restart {off | on | grace-period {<1-1800> | default}}

Configures Graceful Restart for this router.

  • To disable, set it to off.

  • To enable, set it to on.

  • To configure the time, set a value between 1 and 1800 seconds. The default grace period is 120 seconds.

The Graceful Restart option causes this router to act as a re-starting router according to RFC 3623.

The re-starter functionality is supported for both planned and unplanned restarts for both IPv4 OSPFv2 and IPv6 OSPFv3 when using VRRP and OSPFv3 only when using ClusterXL.

Notes:

  • Graceful Restart is not compatible with VRRP Preempt Mode. You must disable VRRP Preempt Mode before you enable this option.

  • In ClusterXL, the re-starter functionality is supported for both planned and unplanned restarts for IPv6 OSPFv3 only.

  • In VRRP Cluster, the re-starter functionality is supported for both planned and unplanned restarts for both IPv4 OSPFv2 and IPv6 OSPFv3.

rfc1583-compatibility {off | on}

Configures the RFC 1583 backward compatibility mode.

This implementation of OSPF is based on RFC 2178, which fixed some looping problems in earlier specifications.

Best Practice - If this implementation runs in an environment with implementations based on RFC 1583 or earlier, then enable this option to ensure backwards compatibility.

Range: off, or on

Default: on

spf-delay {<1-60> | default}

Configures the time to wait before recalculating the OSPF routing table after a change in the topology.

Range: 1-60 seconds

Default: 2 seconds

spf-holdtime {<1-60> | default}

Configures the minimum time between recalculations of the OSPF routing table.

Range: 1-60 seconds

Default: 5 seconds