Implementing OSPF on Cisco IOS XR Software
How to Implement OSPF on CiscoIOS XR Software
RC-194
Cisco IOS XR Routing Configuration Guide
OL-14356-01
For detailed information for the Path Computation Element feature see the “Implementing MPLS Traffic
Engineering on Cisco IOS XR software” module of the Cisco IOS XR MPLS Configuration Guide,
Release 3.6, and the following IETF drafts:
•draft-ietf-ospf-cap-09
•draft-ietf-pce-disco-proto-ospf-00
How to Implement OSPF on Cisco IOS XR Software
This section contains the following procedures:
•Enabling OSPF, pageRC-194 (required)
•Configuring Stub and Not-So-Stubby Area Types, pageRC-197 (optional)
•Configuring Neighbors for Nonbroadcast Networks, pageRC-199 (optional)
•Configuring Authentication at Different Hierarchical Levels for OSPF Version 2, pageRC-204
(optional)
•Controlling the Frequency That the Same LSA Is Originated or Accepted for OSPF, pageRC-207
(optional)
•Creating a Virtual Link with MD5 Authentication to Area 0 for OSPF, pageRC-209 (optional)
•Summarizing Subnetwork LSAs on an OSPF ABR, page RC-213 (optional)
•Redistributing Routes from One IGP into OSPF, pageRC-215 (optional)
•Configuring OSPF Shortest Path First Throttling, pageRC-219 (optional)
•Configuring Nonstop Forwarding Specific to Cisco for OSPF Version 2, pageRC-224 (optional)
•Configuring OSPF Version 2 for MPLS Traffic Engineering, pageRC-226 (optional)
•Configuring OSPFv3 Graceful Restart, pageRC-230 (optional)
•Configuring an OSPFv2 Sham Link, pageRC-233 (optional)
•Enabling Nonstop Routing for OSPFv2, page RC-236 (optional)
•Enabling Multicast-intact for OSPFv2, pageRC-237 (optional)
•Associating Interfaces to a VRF, pageRC-238 (optional)
•Configuring OSPF as a Provider Edge to Customer Edge (PE-CE) Protocol, pageRC-240 (optional)
•Creating Multiple OSPF Instances (OSPF Process and a VRF), page RC-243 (optional)
•Configuring Multi-area Adjacency, pageRC-244 (optional)
•Configuring Label Distribution Protocol IGP Auto-configuration for OSPF, page RC-246 (optional)
•Configuring Authentication Message Digest Management for OSPF, pageRC-247 (optional)
•Configuring Generalized TTL Security Mechanism (GTSM) for OSPF, pageRC-251 (optional)
•Verifying OSPF Configuration and Operation, pageRC-254 (optional)

Enabling OSPF

This task explains how to perform the minimum OSPF configuration on your router that is to enable an
OSPF process with a router ID, configure a backbone or nonbackbone area, and then assign one or more
interfaces on which OSPF runs.