I have 2 x C210-M2 with 2 gigabit ethernet ports on the mother board and 4 gigabit ethernet ports on a PCI card.
The 4 ports of the PCI cards work fine.
About the 2 ports on the mother board, I encounter one problem with ESXi 4.1:
My 2 ports do autonegotiation and on the vsphere client the speed and duplex of the ports are always displayed correctly.
The network switch on which the server is connected is a C-3560.
I use this server for Unified Communications, an I see the problem on large file download.
With a Unity Connection virtual machine, when I want to download a locale file (file for language - 650 MB to 1 GB)
The download progression is shown in MB and it progresses very slowly as 1 MB every many seconds.
Whereas when I use a gigabit port on the 4-port PCI card, I can see the progression to go at a speed of tens of MB in the same period.
The only way to have the progression to go faster with the 2 gigabit ports on the main board, is to set the speed of the 3560 switch
at 10Mb/s HalfDuplex. In this case when looking at the vsphere client, the gigabit port on the server negotiates at 10MB - Half Dupl.
and the progression is constant and much quicker than it is when at 1000 Gb/s Full Dupl.
Anybody has any clue .
My CIMC firmware version is 1.4.1 and I run ESXi 4.1.0
Regards
Marc - CCIE 2700
