Proxmox and network switch reboot

[Melanxolik]

I know, it's very strange post.

My problem very hard for me. I try to tell:
We have new proxmox 4 cluster and 3 nodes:

Intel(R) Xeon(R) CPU E5-1650 v3 @ 3.50GHz / 32GB mem / 6 SSHD / 2 SSD 
Network: 01:00.0 Ethernet controller: Intel Corporation 82599 10 Gigabit Network Connection (rev 01)

Network adapter connected to swith with twinax cable 3 meters SFP+

Network switch: 
Hostname: switch3300
Model: ex3300-24t
Junos: 15.1R1.8
JUNOS EX  Software Suite [15.1R1.8]
JUNOS FIPS mode utilities [15.1R1.8]
JUNOS Online Documentation [15.1R1.8]
JUNOS EX 3300 Software Suite [15.1R1.8]
JUNOS Web Management Platform Package [15.1R1.8]

show chassis environment
Class Item                           Status     Measurement
Power FPC 0 Power Supply 0           OK        
Temp  FPC 0 CPU                      OK         35 degrees C / 95 degrees F
      FPC 0 EX-PFE1                  OK         46 degrees C / 114 degrees F
      FPC 0 GEPHY1                   OK         23 degrees C / 73 degrees F
      FPC 0 Fan Exhaust              OK         31 degrees C / 87 degrees F
      FPC 0 SFP+ PHY                 OK         26 degrees C / 78 degrees F
      FPC 0 Local Sensor             OK         28 degrees C / 82 degrees F
Fans  FPC 0 Fan 1                    OK         Spinning at normal speed
      FPC 0 Fan 2                    OK         Spinning at normal speed

After problem he upgraded from 12.3 to 15.1 firmware

Network ports don't have any errors at ports. We tryed start iperf, keygen and other test 10gb ethernet.

Proxmox cluster have connected to glusterfs storage at 1GB interface over 10GB.

Problem:
Please do not laugh, when I do backup from api query, after short time (1-3 minutes) a network switch reboot without any errors and any messages.
I know it's not perhaps, but it's try.

I will ask replace network switch, but can someone faced with this problem?

At next week I can create video how does this happen.

 

[Melanxolik]

I repeated problem with query from console:

pvesh create /nodes/cluster-2-2/vzdump --vmid 665 --storage backup23

A juniper EX3300 reboot without any messages, and continuous reboots until we didn't shutdown all nodes in cluster.

But, we try made backup from gui and haven't any errors and problems.