Displaying Priority Definitions

The following command displays PFC information on the physical link with regards to enabled priorities on the NIC:

# dladm show-phys -D pfc datalink

This example shows how to display the current priority definitions on a specific physical link based on the value of the pfcmap property. For example, assume that pfcmap is configured as 01000000. To display the corresponding priority mappings on the physical link, you would proceed as follows:

# dladm show-phys -D pfc net0
LINK  COS    PFC   PFC_EFFECT   CLIENTS
net0   0     YES   NO           net0,vnic1
       1     YES   YES          vnic2
       2     YES   NO           vnic3
       3     YES   NO           vnic4
       4     YES   NO           vnic5
       5     YES   NO           vnic6
       6     YES   NO           vnic7
       7     YES   NO           vnic8

For the physical link net0, priority is enabled for all VNIC clients configured over the datalink. However, the local host adjusts its PFC mapping to the PFC mapping on the peer, as shown by the values of the PFC_EFFECT field, where priority is disabled on COS 0 and 2-7. As a result, no PFC frames would be exchanged for traffic on any VNIC except vnic2 regardless of the availability of resources. With this configuration, packet drops are allowed on traffic that flows on all VNICs except vnic2. For traffic on vnic2, PFC PAUSE frames are sent when traffic congestion occurs to prevent packet loss on this client.