Administrator Guide

interfacetengigabitEthernet slot/port
2 Open a DCB map and enter DCB map configuration mode.
INTERFACE mode
dcb-map name
3 Disable PFC.
DCB MAP mode
no pfc mode on
4 Return to interface configuration mode.
DCB MAP mode
exit
5 Apply the DCB map, created to disable the PFC operation, on the interface.
INTERFACE mode
dcb-map {name | default}
6 Configure the port queues that still function as no-drop queues for lossless traffic.You cannot configure
PFC no-drop queues on an interface on which a DCB map with PFC enabled has been applied, or which
is already configured for PFC using the pfc priority command.The maximum number of lossless
queues globally supported on a port is 2.Range: 0-3. Separate queue values with a comma; specify a
priority range with a dash; for example: pfc no-drop queues 1,3 or pfc no-drop queues 2-3 Default: No
lossless queues are configured.
INTERFACE mode
pfc no-drop queuesqueue-range
Data Center Bridging Exchange Protocol (DCBx)
DCBx allows a switch to automatically discover DCB-enabled peers and exchange configuration information.
PFC and ETS use DCBx to exchange and negotiate parameters with peer devices. DCBx capabilities include:
Discovery of DCB capabilities on peer-device connections.
Determination of possible mismatch in DCB configuration on a peer link.
Configuration of a peer device over a DCB link.
DCBx requires the link layer discovery protocol (LLDP) to provide the path to exchange DCB parameters with
peer devices. Exchanged parameters are sent in organizationally specific TLVs in LLDP data units. For more
information, refer to Link Layer Discovery Protocol (LLDP). The following LLDP TLVs are supported for DCB
parameter exchange:
PFC parameters PFC Configuration TLV and Application Priority Configuration TLV.
ETS parameters ETS Configuration TLV and ETS Recommendation TLV.
FC Flex IO Modules 1061