Chapter 2 Advanced Routing for FortiOS 5.0 : Dynamic Routing Overview : Comparison of dynamic routing protocols : When to adopt dynamic routing : Budget
  
Budget
When making any business decision, the budget must always be considered. Static routing does not involve special hardware, fancy software, or expensive training courses.
Dynamic routing can include all of these extra expenses. Any new hardware, such as routers and switches, will need to support your chosen routing protocols. Network management software and routing protocol drivers may be necessary as well to help configure and maintain your more complex network. If the network administrators are not well versed in dynamic routing, either a training course or some hands-on learning time must be budgeted so they can administer the new network with confidence. Together, these factors can impact your budget.
Additionally, people will always account for network starting costs in the budgets, but usually leave out the ongoing cost of network maintenance. Any budget must provide for the hours that will be spent on updating the network routing equipment, and fixing any problems. Without that money in the budget, you may end up back at static routing before you know it.