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PFC configuration on Nexus 5000

mhosamani
Beginner
Beginner

Hi,

I have a CNA in my server connected to cisco nexus 5000 interfcae. I Want to genearate pause frames for FCOE class of traffic using the default class class-fcoe and cos value 3, the firmware version running is 5.0(3) N1 (1b). Can anyone tell me how can i configure it ?

Thanks,

Manju

5 Replies 5

Prashanth Krishnappa
Cisco Employee
Cisco Employee

PFC is something which gets negotiated automatically during initial LLDP handshake. Is it not happenning in your case?

No its not happening and i dont see any configuration as such over the switch interface i am connected to, can you tell me how can i configure it manually ?

I suggest that you focus on why its not negotiated via LLDP. Can you attach output of following commands from the switch which connects to the CNA?

show mod

show run

show system internal dcbx info interface ethernet x/y

Also if your switch is 55xx model, make sure you have FCOE QoS configured.

switch (config-sys-qos)# service-policy type qos input fcoe-default-in-policy

switch (config-sys-qos)# service-policy type queuing inputfcoe-default-in-policy

switch (config-sys-qos)# service-policy type queuing output fcoe-default-out-policy

switch (config-sys-qos)# service-policy type network-qos fcoe-default-nq-policy