Support Tips: Network Performance Troubleshooting
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Troubleshooting networking performance issues can be tricky. It is always recommended to engage Scale Computing support if you believe there is is a networking performance issue. There are a few key items to consider:
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One VM being affected or all VMs?
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One node being affected or all nodes?
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Are there any errors in the switch logs?
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Are there performance issues elsewhere on the network?
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What color are the NIC lights?
Having a clear picture of the issue you are experiencing before engaging support can be very helpful for resolving the issue quickly. If you do have access to the HC3 cluster verify that the node or cluster is physically on. Verify that all cables are connected to the nodes as well as the switch and fully seated in the ports. If everything appears to be connected you will want to check the Network Interface Card (NIC) A solid green light indicates connectivity is present and a flashing amber lights indicate collisions. Check the switch logs to see if there are any network connectivity issues or the switch is dropping the connection to the cluster.
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