aaron wrote:
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.
What's being logged in the buffer when the port gets disabled? I hate
to ask the obvious but this isn't a STP issue, is it? Is the ESX box
configured with an internal switch that's passing BPDUs received on one
interface back out the other, causing the port to go into blocking
and/or becoming err-disabled thanks to bpduguard?
What are the other ports in the Dell configured like in VMWare? How
have you configured the problematic port in the 3750? Do you have any
VLANs overlapping between 2 of the ESX box's ports? That will be a L2
loop if the ESX box is configured with an internal switch that doesn't
participate in STP.
Shooting from the hip but that's all I'm worth on a Friday afternoon.
Justin
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