--- title: "Monitor DIA health" canonical: "https://docs.aryaka.com/space/KNOW/1511982/Monitor%20DIA%20health" format: markdown --- A Direct Internet Access (DIA) network is required by all sites. This is a site's dedicated (that is, unshared) internet access using DIA links. In addition to the DIA network, all sites also must have a LAN network, and at least one of the remaining network types. You can monitor the DIA health statistics on the Network Direct Internet Health page. It contains two graphs that display latency and loss statistics for a selected site. If it is not already open, open the Network Direct Internet Health page as follows: To open the Network Direct Internet Health page Log in to MyAryaka. The Home page appears. Click SD-WAN > Monitor in the left navigation pane. The Site: page appears. Click the Reference Site drop-down list and select the site whose DIA health you want to monitor. Click Direct Internet in the WAN Traffic by Network graph . The Network Traffic: Direct Internet page appears. Click the Health icon in the navigation bar at the bottom of the page. The Network Direct Internet Health page appears for the selected site. The components of the Network Direct Internet Health page are described in the following sections. Apply filters The filter pane contain the following components that allow you to select the criteria that determines the graph details that appear on the page. Component Description Time field Determines the period for which to monitor and graph the traffic for the selected reference site. Each time period has an associated data interval defined for it. For example, if you select the Last 24 Hours time period, the associated data interval is 30 Minutes, which means a sample is taken and graphed every 30 minutes for a 24 hour period. Select one of the following time period/data interval pairs to graph the selected site's traffic: Last 1 Hour (1 minute) Last 4 Hours (1 minute) Last 8 Hours (1 minute) Last 24 Hours (1 minute) Last 7 Days (30 minutes) Last 30 days (30 minutes) Last Day (1 minute) Last Week (30 minutes) Last Month (30 minutes) Current Month (30 minutes) Custom (varies per custom time period defined) Note: Last Day is different from Last 24 Hours. The Last 24 Hours plots graph with traffic collected in the last 24 hours. Last Day plots the traffic during the last calendar day. Similarly, Last Month plots the traffic during the last calendar month, and so on. Current Month plots the traffic during the current calendar month. You can select a custom time, date, and year going as far back as five years. Apply button Saves and applies your filter selections to the page's graphs. Included graphs The following graphs appear on the Network Direct Internet Health page: ITC Latency ITC Loss The internet traffic controller (ITC) is an engine that runs on the ANAP that determines the health of each internet facing interface by running ICMP to a known public IP address and calculating loss and latency. The default ICMP destination is 8.8.8.8. For more information about the ITC engine, see Internet Overflow . In this topic Related topics Monitor SD-WAN Monitor VPN Path Aryaka health Monitor VPN Path Internet health