Configuring IPv4 OSPFv2 Multiple Instances

Introduction

Multiple OSPF Instances let you separate OSPF into multiple OSPF domains.

Each instance contains a fully independent OSPF database, and routes from one domain are not automatically advertised to another domain.

You can manually configure route maps to filter and redistribute routes from one domain into another domain.

The redistributed routes show as OSPF external routes in the routing table of the other domain.

If two different OSPF instances try to install the same route with equal cost, the route with the lower next hop IP address is preferred.

If the routes have different costs, the route with the lower cost is selected.

Separate OSPF Instances do not share link state with one another, and will not pass routes among themselves unless explicitly configured to do so using either Route Redistribution or Routemaps.

Adding a New IPv4 OSPFv2 Instance

Note - To add more instances, the default instance must have at least one OSPF interface configured and running.

  1. From the left navigation tree, click Advanced Routing > OSPF.

  2. In the Instances section, click Add OSPF Instance.

  3. In the Instance Number field, enter the Instance number from 1 to 65535.

  4. Click OK.

  1. Connect to the command line.

  2. Log in to Gaia ClishClosed The name of the default command line shell in Check Point Gaia operating system. This is a restricted shell (role-based administration controls the number of commands available in the shell)..

  3. Add a new instance:

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

  4. Save the configuration:

    save config

Deleting an Existing IPv4 OSPFv2 Instance

  1. From the left navigation tree, click Advanced Routing > OSPF.

  2. In the Instances section:

    1. Select the instance.

    2. Click Delete OSPF Instance.

    3. Click OK to confirm.

  1. Connect to the command line.

  2. Log in to GaiaClosed Check Point security operating system that combines the strengths of both SecurePlatform and IPSO operating systems. Clish.

  3. Delete the instance:

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

  4. Save the configuration:

    save config

Restarting an IPv4 OSPFv2 Instance

Restarting an IPv4 OSPFv2 Instance lets you clear OSPF database and restart OSPF adjacency for an instance without restarting the Gaia RouteD daemon.

  1. From the left navigation tree, click Advanced Routing > OSPF.

  2. In the Instances section:

    1. Select the OSPF Instance.

    2. Click Restart OSPF Instance.

  1. Connect to the command line.

  2. Log in to Gaia Clish.

  3. Restart the OSPF Instance:

    restart ospf instance {<OSPF Instance Number> | default}