Prerequisites For Implementing Ospf; Enable Ospf - Cisco NCS 5500 Series Configuration Manuals

Prerequisites for Implementing OSPF

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Prerequisites for Implementing OSPF

The following are prerequisites for implementing OSPF:
• Configuration tasks for OSPFv3 assume that you are familiar with IPv6 addressing and basic configuration.
• Before you enable OSPFv3 on an interface, you must perform the following tasks:
• Configuring authentication (IP Security) is an optional task. If you choose to configure authentication,

Enable 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.
Before you begin
Although you can configure OSPF before you configure an IP address, no OSPF routing occurs until at least
one IP address is configured.
SUMMARY STEPS
1. configure
2. Do one of the following:
3. router-id { router-id }
4. area area-id
5. interface type interface-path-id
6. Repeat Step 5 for each interface that uses OSPF.
7. log adjacency changes [ detail ] [ enable | disable ]
8. commit
Routing Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.3.x
46
OSPF Authentication Message Digest Management, on page 95
GTSM TTL Security Mechanism for OSPF, on page 98
References for OSPF , on page 101
See the Implementing Network Stack IPv4 and IPv6 in the Cisco IP Addresses and Services Configuration
Guide IP Addresses and Services Configuration Guide for Cisco NCS 5500 Series Routers for information
on IPv6 routing and addressing.
• 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.
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.
• router ospf process-name
• router ospfv3 process-name
Implementing OSPF