[c-nsp] Weird Port Loopback Issues with 3750 and ESX 3.5

Mateusz Błaszczyk blahu77 at gmail.com
Thu Sep 25 04:38:23 EDT 2008


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> I am hoping some of you out there may have experienced this problem in the
> past. We have a spare NIC on a DELL X445 (Broadcom  NetXtreme BCM5793
> 1000Base-T) running ESX 3.5. No matter what I do I cannot seem to get this
> NIC working properly. I have it connected to a 3750 switch GIG GLC-T SFP
> port and I am getting err-disable loopback issues where the switch is
> actually receiving its own keep alives on the same port.


does it work when you set "no keepalive" on 3750's port


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