Gateways with Underperforming WAN Links

The Gateway are using underperforming WAN links insight can be accessed from the Global, Site, and Gateways context. Certain policy configurations are applied to gateways to route traffic through the uplinks available in the network. This insight occurs when the user does not configure these policies on the links and traffic is assigned to the gateway by a round-robin method across all available links in the network. This insight provides information about gateways that are using poorer performing WAN Wide Area Network. WAN is a telecommunications network or computer network that extends over a large geographical distance. links when a better (non-LTE Long Term Evolution. LTE is a 4G wireless communication standard that provides high-speed wireless communication for mobile phones and data terminals. See 4G.) link is available in the network. This Gateway are using underperforming WAN links insight compares the latency of the gateway links and reports if a low-latency link is under utilized. The insight is categorized under availability.

The link latency is scored based on the following:

  • Absolute latency measurement—The measurement is achieved from the telemetry of the probe IPs configured in the network. It is measured in milliseconds (ms).
  • Relative latency measurement—This measurement is achieved by comparing different gateways that use the same probe IP in the network. It is measured in percentile.

This insight displays the following information:

Insight Summary

The insight summary provides the following details:

  • Reason—Displays the possible causes for gateways using under-performing WAN links in the network.
  • Recommendation—Displays the possible recommendation against each failure to resolve the same.

Time Series Graph

At the Global context, this graph displays the number of gateways using high latency WAN link in the network during the selected time period.

At the Site and Device (gateway) contexts, it displays the average latency (ms) of high latency WAN link along with baseline value (prob target peer average latency) per uplink type in the network during the selected time period. The uplink type can be selected from the drop down menu in time series graph.

You can hover your mouse over each bar graph to see the exact number of bad gateways in each timestamp.

Cards

The cards vary based on the context that you access the insight from. Click one of the cards to view further details:

Table 1: Cards Context

Cards

Context

Site

Global

Gateway

Global, Site

Site

Lists the number of sites using lower latency uplinks. Click the arrow to view the pictorial graph of the Good vs Bad comparison. Click the number displayed on the Site card, to view a detailed description of the impacted sites:

  • Site—Name of the site impacted by the insight and link to the specific insight at the site context.
  • Gateways—Number of gateways impacted by low latency in each site.

Gateway

Lists the number of gateways using lower latency uplinks. Click the arrow to view the pictorial graph of the Good vs Bad comparison. Click the number displayed on the Gateway card, to view a detailed description of the impacted gateways: