WAN Assurance Monitoring and Troubleshooting Overview
Get familiar with various Juniper Mist features that you can use to investigate and resolve issues in your WAN Assurance deployments.
The Juniper Mist WAN Assurance solution simplifies monitoring and troubleshooting of WAN Edge devices on your network by consistently and proactively monitoring numerous variables that impact a user's network experience.
WAN Edge devices deployed in WAN Assurance have unique solutions to the WAN Edge and overlay, which influence provisioning and deployment. For this reason, platform-specific factors shape those monitoring and troubleshooting actions, and understanding your WAN Assurance platform is crucial.
The Monitor and Troubleshoot chapter of the Juniper Mist WAN Assurance Configuration Guide serves system administrators and technical support professionals who maintain enterprise SD-WAN networks.
WAN Edge Monitoring
In the WAN Edge monitoring topics of this chapter, you’ll explore the most efficient ways to monitor your WAN Edge device in the Mist portal following your initial deployment phase. For Session Smart Routers (SSRs) deployed as a WAN Edge, the Secure Vector Routing (SVR) solution monitors liveness, jitter, latency, loss, and mean opinion score (MOS) to inform user minutes. For SRX Series Firewalls deployed as a WAN Edge, the system tracks the utilization of the IPsec tunnels that form the overlay.
WAN Edge SLEs
The Juniper Mist WAN Assurance solution simplifies the entire network diagnosis process. WAN Edge devices track metrics to assess the bandwidth usage and health of the device, links, and applications. The result is service-level experiences (SLEs), which is an assessment of the user experience on the network. From the SLE dashboard, you can follow hyperlinks to view root causes and additional metrics. For more information, see WAN SLEs.
SLEs are an integral part of the Mist platform. They're the result of the AIML running on Juniper devices, alerting network operators to factors that could negatively impact user experiences. Until now, Juniper WAN Assurance has measured three SLEs: WAN Edge Health, WAN Link Health, and Application Health.
When mixed with SLEs from Wireless and Wired Assurance, you gain a client-to-cloud network picture to easily see where issues are, even when they're not on the network. Another benefit of AIML is that Marvis is always learning, finding ways to make the network better. And with that, we introduce our new Congestion SLE.
The Congestion SLE lets you know if a problem on your network is due to link bandwidth utilization. You can then remediate issues by prioritizing some applications, blocking others, or talking with your ISP to gain more bandwidth. And that's the power of Mist SLEs in 60 seconds.
WAN Edge Troubleshooting
WAN Assurance troubleshooting tools give system administrators proactive insights, alongside traditional tools, for identifying and diagnosing WAN Edge issues on a per-application level, down to a granular level. The type of WAN Edge device you deploy in Juniper Mist WAN Assurance will determine the tools you use for monitoring and troubleshooting.
If you are experiencing connectivity issues between two SSR peers, you can investigate the overlay connection between the two to ensure that overlay routes are being advertised properly. Additionally, Bidirectional Forwarding Detection (BFD), which is used to establish and maintain peer reachability between SSRs, is another area of investigation to consider when SSR troubleshooting. There are various troubleshooting tools available in the Mist portal as well.
For troubleshooting gateways on your SRX Series Firewalls, the powerful and versatile Junos OS is used alongside the available monitoring and troubleshooting tools that are available in the Mist portal.
Regardless of the type of WAN Edge device, you’ll use tools within the Mist portal, and can leverage features such as Juniper Mist Application Visibility, Application SLE, and Marvis for monitoring and troubleshooting your WAN Edge devices.