This error message indicates a general network connectivity error between the monitoring station Monitoring Station and the monitored agent servers. It has only been seen on Windows monitoring stations Monitoring Stations and is generally resolved using one of the following methods:
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Disable TCP Offload Engine (TOE)
If your monitoring station server has a TOE-enabled network card, you may need to disable it. TOE is intended to accelerate long-running TCP connections. Since up.time uses many short-lived connections to contact agents, its process can be mismanaged by the TOE. Please perform the following commands on the monitoring station to disable TOE:
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- Click on the Primary Adapter.
- Click on the Resource Allocations tab on the right.
- If TOE is enabled, click the Configure button and disable it.
Windows TCP Stack is overloaded
If up.time is monitoring more than 500 services, you may find that the default Windows TCP stack options are not sufficient to maintain the outbound up.time connections. In this case, we recommend adjusting registry settings on the monitoring station to relieve some common TCP bottlenecks:
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