Supported Platforms
Example: Disabling OSPFv2 Compatibility with RFC 1583
This example shows how to disable OSPFv2 compatibility with RFC 1583 on the routing device.
Requirements
No special configuration beyond device initialization is required before disabling OSPFv2 compatibility with RFC 1583.
Overview
The introduction of RFC 2328 changed the method used to calculate the routes in an OSPF network. By default, the Junos OS implementation of OSPFv2 is compatible with RFC 1583, so OSPF uses the minimum cost to determine the route to any of the networks within the specified range. When you disable RFC 1583 compatibility, OSPF uses the maximum cost to determine the route to any of the networks within the specified range. To minimize the potential for routing loops, configure the same RFC compatibility on all OSPF devices in an OSPF domain.
Configuration
CLI Quick Configuration
To quickly disable OSPFv2 compatibility with RFC 1583, copy the following command and paste it into the CLI. You configure this setting on all devices that are part of the OSPF domain.
Step-by-Step Procedure
To disable OSPFv2 compatibility with RFC 1583:
- Disable RFC 1583. [edit]user@host# set protocols ospf no-rfc-1583
- If you are done configuring the device, commit the configuration.[edit]user@host# commit
Note: Repeat this configuration on each routing device that participates in an OSPF routing domain.
Results
Confirm your configuration by entering the show protocols ospf command. If the output does not display the intended configuration, repeat the instructions in this example to correct the configuration.
Verification
Confirm that the configuration is working properly.
Verifying the OSPF Routes
Purpose
Verify that the OSPF routing table maintains the intra-AS paths with the largest metric, which the router uses to calculate AS external routes.
Action
From operational mode, enter the show ospf route detail command.
