Chapter 1. Introduction: Why Network Programmability
It’s 8 p.m. when the phone rings. Web traffic is up over 1000% after your company’s mobile application is casually mentioned during the Superbowl. The web team just added twenty-five more servers to the cluster. However, none of the VMs can communicate. As the lead network engineer, you instantly understand the issues:
1. Switch ports are configured for different VLANS.
2. Access control lists are misconfigured.
3. QoS is wrong.
4. Firewall ports need to be opened.
5. Load balancer needs the pool updated.
You report back to the president of the company that you’re confident you can make all these changes in about a week, but only if he extends your outage window.
You never get a chance to make ...
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