VMware ESXi 3.5 U3 and Broadcom GiB NIC Use 100MB Full Duplex Only
Posted on 2009-04-03
Software: VMware ESXi 3.5.0 U3
Hardware: Broadcom NetXtreme II BCM5708 1000Base-T
The problem is VMware will only autonegotiate to 100 Base-T with Full Duplex, even though both the network adapter and the switch support 1000 Base-T.
Forcing the link speed to 1000BT causes the NIC to drop network connection.