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Look for any Policies which are Enabled but not currently up. Navigate to IPSec VPN | Rules and Settings. Click Network in the top navigation menu. If you make use of this tool, it's recommended to skip the above step.ĭisable, Remove, or Connect all Inactive IPSec VPN Policies NOTE: AppFlow is an advanced monitoring tool which is available under Dashboard. Enable Aggregate AppFlow Report Data Collection. Click AppFlow | Flow Reporting, and Uncheck the following, then click Accept. Click Device in the top navigation menu.
The below resolution is for customers using SonicOS 7.X firmware. This release includes significant user interface changes and many new features that are different from the SonicOS 6.5 and earlier firmware. This article is intended to resolve consistent, high CPU utilization. TIP:Short, infrequent spikes of Core 0 to high percentages are normal, especially when logged into the SonicWall for Management purposes. Even on devices with normal CPU usage it can be valuable to follow this article as it presents Best Practices that can prevent future issues. If you notice consistently high Core 0 activity then it's recommended to follow the steps below.
To monitor the Control Plane, and all CPU Cores, navigate to Dashboard | Multi-Core Monitor or System | Diagnostics and select Multi-Core Monitor from the Diagnostic Tool menu. High usage on the Control Plane can be indicative of many things but can also cause sluggishness on the GUI, inability to Manage the SonicWall, Reboots, and other issues. This is referred to as the Control Plane while all other Cores are referred to as the Data Planes. While all SonicWalls have multiple CPU Cores, Core 0 is responsible for handling specific traffic flows which cannot be handed off to other Cores.
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