1.2.a Evaluate proposed changes to a network

1.2.a [i] Changes to routing protocol parameters

The objective of the change management process is to minimize service downtime by ensuring that requests for changes are recorded and then evaluated, authorized, prioritized, planned, tested, implemented, documented and reviewed in a controlled and consistent manner.

Changes to routing protocol parameters

Cisco IOS allows you to change just about any routing protocol parameter so you can tune them to your specific needs. You can change administrative distance , metric, tags, maximum paths and authentication etc.

Adam, Paul (2014-07-12). All-in-One CCIE V5 Written Exam Guide (Kindle Locations 1216-1222).  . Kindle Edition.