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WAN Insights for SRX Series Firewalls

Juniper Mist™ WAN Assurance is a cloud service that brings automated operations and service levels to the enterprise access layer at the WAN edge. This cloud service also provides WAN insights for Juniper Networks® SRX Series Firewalls. You can view comprehensive insights about WAN link service-level expectation (SLE) metrics, performance and utilization of links, and application metrics. You can continuously analyze performance and the SLE success rate and avoid any possible experience degradation or outages.

Features and Benefits

  • Provides operational visibility into user experiences with WAN SLEs

  • Generates insights on WAN visibility for link and application quality of experience (QoE)

  • Provides traffic metrics for WAN edge devices, interfaces, or WAN zones.

  • Generates details about the devices and applications that use the network's bandwidth

Before You Begin

Access WAN Insights-SRX Dashboard

  1. In the Juniper Mist portal, click Analytics > Premium Analytics .
  2. On the Premium Analytics page, click WAN Insights - SRX.
    Figure 1: WAN Insights- SRX WAN Insights- SRX
    The WAN Insights - SRX page appears.
  3. Use the filter options available at the top of the page to view specific information.

    • Click Report Period and select a time range. By default, the dashboard shows data for the last 7 days.

    • Filter by Site Name, Zone Name, Chassis MAC, and Port Type.

    • From the dashboard actions on the top-right corner of the page, select Reset filter to reset the filters.

WAN Insights - SRX Tiles

The WAN Insights - SRX dashboard includes various tiles that provide WAN performance data in graphical formats. You can use the dashboard to get an overview of the deployed WAN edge devices.

Figure 2: WAN Insights High-Level Summary WAN Insights High-Level Summary

The tile displays a summary of the deployed WAN edge devices and traffic performance.

According to Figure 2, the WAN configuration includes one SRX Series Firewall deployed as a WAN edge device in the MAP. A total of 16 interfaces are active and traffic traversing the network is 344 GB. Hover over the SRX section or the Unique Devices section of the tile to see the interface statistics.

Sites

Figure 3 shows location of WAN edge device site.

Figure 3: Site Location Details Site Location Details

You can place the cursor on the map to display the site location. Double-click the map to zoom in—you'll see a detailed view similar to Figure 3.

SLE Summary

Figure 4 shows WAN service-level expectation (SLEs) details.

Figure 4: WAN SLE Summary WAN SLE Summary

WAN SLE metrics indicate the performance of devices that serve the WAN functions in your network. WAN SLE metrics provide insights about the ability of a device to pass traffic. Therefore, these metrics are important to understand the experience of clients connected to a device.

The Juniper Mist portal displays each SLE metric as a percentage that represents the success rate of the metric.

You can view:

  • Health—Indicates the health or performance of the WAN edge device as a percentage. In the above sample, a value of 100 percent for the Live-Demo site indicates that the WAN edge device performs at an optimal level.
  • Link Health—Indicates the link health. In the above sample, a link health value of 100 percent for the Live-Demo site indicates that the WAN link performance meets the specified SLE.

Link Utilization

Figure 5 shows the Link Utilization tile.

Figure 5: Link Utilization Link Utilization

The Link Utilization tile displays the following parameters that indicate the data transfer volume on the network interfaces:

  • Site Name—Name of the site where a WAN edge device is located.

  • Hostname—Hostname of a WAN edge device.

  • Interface Name—Interface that a device uses for a WAN connection. Or Interface that a network uses for a WAN connection.

  • Interface Rx Bps Peak—Peak traffic volume that an interface receives.

  • Interface Tx Bps Peak—Peak traffic volume that an interface transmits.

  • Interface Rx Bps Average—Average traffic volume that an interface receives.

  • Interface Tx Bps Average—Average traffic volume that an interface transmits.

  • Average Link Utilization (Mbps)—Average traffic volume on an interface.

  • Peak Link Utlization (Mbps)—Peak traffic volume on an interface.

Link Metrics

Figure 6 shows the Link Metrics tile.

Figure 6: Link Metrics Link Metrics

The Link Metrics tile displays the SLE metrics for jitter and latency that the WAN link experiences on the network interfaces. The dashboard displays the following details:

  • Site Name—Name of the site where a WAN edge device is located.

  • Hostname—Hostname of a WAN edge device.

  • Interface Name—Interface that the device uses for the WAN connection. Or Interface that a network uses for a WAN connection.

  • Jitter—Average and peak values of jitter in microseconds. Jitter is the inconsistency of data packet arrival intervals. Jitter is calculated using the variation (standard deviation) of round-trip time (RTT) within a period of 5 through 10 minutes for a particular WAN link.

  • Latency—Average and peak values of latency in microseconds. Latency indicates a delay in data transmission. Latency is calculated using the average RTT for traffic over a period of time.

Link Metrics Trend

Figure 7 shows the Link Metrics Trend tile.

Figure 7: Link Metrics Trend Link Metrics Trend

The tile displays overall jitter, latency, and packet loss over a period of time. You can hover over the chart to see jitter, latency, and packet loss data at a particular time and date.

You can identify the jitter, latency, and packet loss trends from these graphs.

Traffic Insights

Figure 8 shows different graphs available on Traffic Insights tile.

Figure 8: Traffic Insights Traffic Insights
  • The WAN Traffic graph displays the volume of WAN traffic flow over a period of time.
  • The Traffic by Zone graph displays traffic flows through different zones in WAN edge devices for a specific period of time.

    To hide a zone from the chart and show only the remaining zones, click the zone name in the legend below the chart.

  • The Traffic GBs Daily graph displays the volume of traffic that a WAN edge device manages over a period of time.
  • The Average GBytes per Day tile displays the volume of average traffic flow per day.

Applications Insights

Figure 9 shows the Applications Insights tile.

Figure 9: Applications Insights Applications Insights

The Application Insights tile displays information about bandwidth consumed by a particular application or application category. You can spot the top applications in terms of various metrics by viewing these charts:

  • The Top 10 Applications By Users chart displays bandwidth usage by the top 10 protocol types.
  • The Top Business Applications by Traffic GBytes chart displays bandwidth usage by top 10 applications.
  • The Applications on the WAN chart displays bandwidth usage by all the application categories.

Devices By Zone

The Devices by Zone graph displays the number of unique devices connected in different zones in WAN edge devices for the past 7 days as shown in Figure 10.

Figure 10: Devices By Zone Devices By Zone

To hide a zone from the chart and show only the remaining zones, click the zone name in the legend below the chart.

See Also