We're working on sizing our Orion monitoring implementation. We're focusing on our Cisco devices at the moment. Understanding that all networks vary, and setting the assumption that the environment is a single data center, multiple remote office enterprise with IPVPN WAN connections and Cisco switches, for a business environment that is not transactional (ie, optimal network performance is not a necessity; reliable, stable network performance is) with common, Windows-based applications and unexceptional internet traffic, I have two questions:
1) What are the minimum elements recommended to monitor for Cisco ASAs, switches and routers?
2) Under what circumstances would one choose to monitor all interfaces?