SD-WAN

If you have WAN Assurance and are using the Marvis Actions, what are the current actions available for SD-WAN (WAN Edge)?

#Trivia

• MTU Mismatch
• Bad WAN Uplink
• VPN Path Down
• Device Problem

You got it @Himesh!

For those that don't know, Marvis actions are the proactive alerts that Marvis can tell you about on your network. In the case of WAN Edge (which could be SSR or SRX), you get:

• MTU Mismatch - Marvis detects MTU mismatches between a port on the WAN Edge device and a port on the directly connected device. All devices on the same Layer 2 (L2) network must have the same MTU size. When an MTU mismatch occurs, devices might either fragment packets resulting in a network overhead or discard packets. The Details column lists the port on which the mismatch occurs. You'll need to review the port configuration on the WAN edge device and the connected device to resolve the issue.
• Bad WAN Uplink - The Bad WAN Uplink action identifies instances where the uplink interfaces on your Juniper Networks® SRX Series Firewall or Session Smart™ Router are experiencing issues. Marvis identifies interface-related issues (such as cable issues, congestion) or it could be network-related (high latency, packet drops, and jitter). These issues can cause poor user experience and result in an unhealthy WAN link. You might see errors in the overlay even though there are no issues in the underlay.
• VPN Path Down - Marvis monitors the VPN paths that are associated with WAN edge nodes (Juniper Networks® SRX Series Firewall or Session Smart™ Router) in the overlay network. If a VPN tunnel goes down, Marvis displays the VPN Path Down action so that you can take immediate action. Marvis provides detailed information such as the impacted sites, applications, and clients.
• Device Problem - For known device failures such as Malicious Driver Detection and Buffer Pool Exhaustion, the SSR router will send notification about those events to the MIST cloud for alerting. In addition, older firmware versions without the fix for these issues will automatically restart the system to mitigate the problem along with notifying the MIST cloud.