Hi,
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
| PORT-ID | USED-BY | TEAM-PNIC | DNAME | PKTTX/s | MbTX/s | PKTRX/s | MbRX/s | %DRPTX | %DRPRX |
| 33554433 | Management | n/a | vSwitch0 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| 33554434 | vmnic0 | - | vSwitch0 | 22.73 | 0.04 | 44.50 | 0.10 | 0.00 | 0.00 |
| 33554435 | Shadow of vmnic0 | n/a | vSwitch0 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| 33554436 | vmnic1 | - | vSwitch0 | 43.39 | 0.08 | 1.91 | 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 |
| 33554438 | vmk0 | all(2) | vSwitch0 | 3.66 | 0.01 | 1.91 | 0.00 | 0.00 | 0.00 |
The only thing I see that there are massive interrupts for 0xef:
| VECTOR | COUNT/s | TIME/int | COUNT_0 | COUNT_1 | COUNT_2 | COUNT_3 | COUNT_4 | COUNT_5 | COUNT_6 | COUNT_7 | COUNT_8 | COUNT_9 | COUNT_10 | COUNT_11 | COUNT_12 | COUNT_13 | COUNT_14 | COUNT_15 | COUNT_16 | COUNT_17 | COUNT_18 | COUNT_1 |
| 0xef | 4435.5 | 1.0 | 309.2 | 275.6 | 402.9 | 30.5 | 339.0 | 15.3 | 353.6 | 32.4 | 386.7 | 72.5 | 393.4 | 21.0 | 122.3 | 120.4 | 126.4 | 305.2 | 322.3 | 36.2 | 174.3 | 40. |
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?
