Prisma SD-WAN Link Quality Dashboard
Table of Contents
Prisma SD-WAN Link Quality Dashboard
Lets learn more about the Prisma SD-WAN link quality.
| Where Can I Use This? | What Do I Need? |
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Prisma SD-WAN allows network administrators to meet their
application Service Level Agreements (SLAs) with its Path,
QoS, and Security policies. Through
the Prisma SD-WAN path policy, you can define rules to express business intent for which
paths are allowed per application. The ION devices evaluate each application session
against the defined path policy and select the WAN path that meets the
application-specific SLA. One of the many mechanisms used to determine if a path will
meet an application’s SLA is monitoring the Link Quality.
The Dashboard > Overall Link Quality
on the Prisma SD-WAN web interface provides the aggregate link quality
metrics of all branch and data center sites at a glance. It includes information on the
MOS, packet loss, jitter, and latency of the links. View data in the last available 5
minutes' time frames and the last available 1 hour of any metric.
Prisma SD-WAN determines link quality by actively probing the
Secure Fabric VPN paths over public and private transports
and the private WAN underlay paths. The probes provide a constant measurement of network
performance metrics, such as jitter, latency, and packet loss. These metrics, along with
application-specific performance metrics and Layer 1 – Layer 7 reachability inform
traffic forwarding decisions for new and existing application flows.
By default, Link Quality metrics influence path selection for all
real-time voice and video applications. If a link is considered acceptable, the
real-time application will stay on the initially selected path. Still, when the link is
degraded or considered inadequate, the ION device will seamlessly move all existing and
subsequent real-time application flows to a suitable alternate path as allowed by
policy, if available.
Based on the link quality metrics chosen, you can filter the information based on
Interval, Start Time, and Direction. Using the interactive dashboard, you can change the
metric to any other link quality metrics to view the corresponding graphs. The last
distribution range of the bar graph up to the 90th percentile of the available data.
The Link Quality Metrics provides a snapshot of the current state
of the links you are monitoring. You gain insight into the dashboard's Link Performance,
Link Packet Loss, Link Jitter, and Link Latency. Links are displayed by default for all
your sites and for the most recent time period (last available 5 minutes or last
available hour). The interactive dashboard provides filters to change the scope of
information displayed; it allows you to analyze information you want to view in greater
detail in the Link Quality Details tab.
Click View Details to see the detailed view of the links table.
The table enables you to view all secure fabric links between two sites along with
Circuit and WAN information. You can also view the link quality metrics and link type
for each link. You can sort the table information based on a particular link quality
metric displaying the corresponding worst value on top. Expand the site detail to view
the link quality metrics for ingress and egress flows. It enables you to view the link
quality chart per site and path. The chosen site and active path are the pre-selected
filter criteria for the Activity chart that displays the corresponding information.
