I have a Dell Blade Enclosure with 14 blades and ESXi 5.5 on it. On blade 7 and 14 I have round about 65 % packet loss when I ping the ESXi Management interface. On all other blades there ist no packet loss.
The strange thing is, I have this packet loss when I ping from:
blade 1 to blade 7 -> ~ 65% packet loss
but, when I ping from blade 7 to blade 1 at the same time when I ping from blade 1 to blade 7 I have no packet loss at all ... not from 1 to 7 neither from 7 to 1
blade 1 to blade 7 && blade 7 to blade 1 -> 0% packet loss
I have increased the Rx buffer in the ESX CLI but it doesn´t help.
When I do a esxtop and go to the networktab I don´t see any packetdrop
|33554435||Shadow of vmnic0||n/a||vSwitch0||0.00||0.00||0.00||0.00||0.00||0.00|
|33554437||Shadow of vmnic1||n/a||vSwitch0||0.00||0.00||0.00||0.00||0.00||0.00|
The only thing I see that there are massive interrupts for 0xef:
The switch logfile shows me, that the blade network card is flapping sometimes, when I say sometimes I mean once or twice a week for about 1 or 2 minutes.
I don´t think that`s the reason for that but I haven´t any idea anymore what can be the problem. Especially the ping and counter ping situation don´t make any sense to me.
Maybe you can help me?