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Implementing OSPF on Cisco IOS XR Software
Contents
RC-172
Cisco IOS XR Routing Configuration Guide
OL-14356-01
Contents
• Prerequisites for Implementing OSPF on Cisco IOS XR Software, page RC-172
• Information About Implementing OSPF on Cisco IOS XR Software, page RC-173
• How to Implement OSPF on Cisco IOS XR Software, page RC-194
• Configuration Examples for Implementing OSPF on Cisco IOS XR Software, page RC-255
• Where to Go Next, page RC-262
• Additional References, page RC-262
Prerequisites for Implementing OSPF on Cisco IOS XR Software
The following are prerequisites for implementing OSPF on Cisco IOS XR Software:
• You must be in a user group associated with a task group that includes the proper task IDs for OSPF
commands. Task IDs for commands are listed in the Cisco IOS XR Task ID Reference Guide. For
detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS
XR Software module of the Cisco IOS XR System Security Configuration Guide.
• Configuration tasks for OSPFv3 assume that you are familiar with IPv6 addressing and basic
configuration. See the Implementing Network Stack IPv4 and IPv6 on Cisco IOS XR Software
module of the Cisco IOS XR IP Addresses and Services Configuration Guide for information on IPv6
routing and addressing.
• Before you enable OSPFv3 on an interface, you must perform the following tasks:
–
Complete the OSPF network strategy and planning for your IPv6 network. For example, you
must decide whether multiple areas are required.
–
Enable IPv6 on the interface.
• Configuring authentication (IP Security) is an optional task. If you choose to configure
authentication, you must first decide whether to configure plain text or Message Digest 5 (MD5)
authentication, and whether the authentication applies to an entire area or specific interfaces.
Release 3.5.0 Support was added for the following features:
• Label Distribution Protocol IGP Auto-configuration for OSPF
• OSPF Authentication Message Digest Management
• GTSM TTL Security Mechanism for OSPF
• Path Computation Element for OSPFv2
• OSPF Warm Standby
Release 3.6.0 Support was added for the following features:
• OSPFv2 Shamlink Support for MPLS VPN
• OSPFv2 nonstop routing (NSR)