OSPF Point-to-Point
Explore how to automate OSPF point-to-point interface configuration on layer 3 port-channels using Ansible playbooks. Understand the risks of manual changes and how automation ensures correct order and execution, minimizes network downtime, and maintains accurate documentation. This lesson helps you capture and validate network state before and after changes, following best practices for tactical network automation.
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OSPF point-to-point
This next example includes a change that is disruptive to the network, while downtime is unavoidable. Should the operator make an error on either end or perform the change in the wrong order, they can leave the network offline until somebody visits the remote device with a console cable and restores connectivity. This is avoided with automation.
The example involves interface configurations for OSPF. There are two building distribution switches connected to the core through layer 3 port-channels. Each side of the link is logically a single interface, so this should be connected as an OSPF point-to-point connection. This is not the default configuration for layer 3 port-channels, and must be configured explicitly on the interface. The default is a broadcast type for OSPF. While broadcast will still work and connectivity will be established, there are some worthwhile advantages to following best practices. ...