5K FCOE QoS question - latest NX-OS

[dtushing123]

Should default QoS for FCOE be automagically created when one enables feature fcoe ?

I've just worked a problem where it did not, adding default FCOE QoS fixed the issue and allowed vfc's to come up...

Only thing I can think of is that I had previously entered jumbo frame QoS, could that be why?

How do I get jumbo 9126 for my IP traffic along with FCOE policy, should I add it to class default ?

(Reason I'm asking is that I've never had to manually enter FCOE QoS before in years of doing this)

Thx

[micturne]

Hello dtushing123,

I recieved the following response from one of our engineers.  Let me know if this reply answers your questions.

This is the default fcoe qos configuration:

under system qos the below 4 lines always need to be added on a N55xx. The older N50xx initially had it automatically added. But it changed somewhere, i think with 5.0(2).... or so.

system qos

  service-policy type qos input fcoe-default-in-policy

  service-policy type queuing input fcoe-default-in-policy

  service-policy type queuing output fcoe-default-out-policy

  service-policy type network-qos fcoe-default-nq-policy

the policies are there by default, you just need to enable them under system qos.

If you want to combine jumbo and fcoe it looks like below:

policy-map type network-qos jumbo

  class type network-qos class-fcoe

    pause no-drop

    mtu 2158

  class type network-qos class-default

    mtu 9216

multicast-optimize

system qos

  service-policy type network-qos jumbo

  service-policy type qos input fcoe-default-in-policy

  service-policy type queuing input fcoe-default-in-policy

  service-policy type queuing output fcoe-default-out-policy

this is an example with the fcoe default qos enabled. And then i added jumbo frames to it.

You must combine jumbo and fcoe in one policy map.

you can do a

show policy-map

and lookup the policies currently present in the system.

Easiest way to check is to do a

show queuing interface ethernet x/y

for the physical interface you bind your vfc too.

and make sure the fcoe plicy is enabled.