This message was posted on behalf of Intel Corporation
Thank you for posting in Wired Communities. Can you share additional information below:
1) What is the exact model of the Extreme Summit Switches?
2) Have you tried connecting to other switch brand or model? If yes what is the result?
3) What is the driver version?
4)Since this is onboard NIC on Dell laptop and happened on several units, have you contacting Dell* support for them to further assist on this?