Re: Read port priority counters is 0 .

Hi Seol,

1) MLNX-OS Switch Configuration:
   a. Have you created a VLAN and set the switchports to hybrid (or trunk) mode?
   b. Have you Enable PFC on the switch and on the interfaces?
   c. Does the "show dcb priority-flow-control" reports the accurate configuration?
  
2) Server configuration:
   a. Do you have the /etc/modprobe.d/mlx4_en.conf file with the following options:
      options mlx4_en pfctx=0x08 pfcrx=0x08 
   b. Did you restart openibd service ? (#/etc/init.d/openidb restart)
      Please also verify under /sys/module/mlx4_en/parameters/pfcrx & pfctx files that the priority is set accordingly.
   c. When you run the "ib_write_bw" from the client (Aprotos), does the IP 192.168.10.10 correspond to the VLAN: p1p1.100 on server Clotho? 

3) Port priority counters from the Mellanox switch (via MLNX-OS CLI):
   a. Does the interface(s) on the switch report any pause packets? (check for both interfaces from the servers).
      ie: switch (config) # show interfaces ethernet 1/1 counters priority 3
  
   Thank you,
   Sophie.