Historical data is an important element in determining Network Health!
Why performance alerts based on historical data matter! Network Health Check!
In distributed enterprise networks, not all the packets are routed equally because each network location is connected back to the corporate datacenter, or headquarters, with different transport technologies. Common choices are dark fiber for campus or metropolitan locations, leased lines (VPLS, MPLS, Private IP) or other like services for regional or national locations, and VPN tunnels across a common Internet connection for remote international locations. Bottom line, the uplink of a network location will affect the speed and network performance of users at your remote network locations.
Network engineers can measure and monitor network performance in a simple yet effective way via PING tests. For example, one can configure a continuous PING test from each remote location to the corporate datacenter, or other central network resource device that your users regularly access. One can record packet loss and round-trip-time for each ICMP echo request/reply received(driver level). Cisco routers use the same technique with IP SLA command techniques.
So how can we monitor network performance and catch degradation issues occurring at remote locations?