Users Guide

Table 17. Configuring Lossless Queues
Step Task Command Command Mode
1 Enter INTERFACE Configuration
mode.
interface {tengigabitEthernet
slot/port |
fortygigabitEthernet slot}
port-number is a port number from 0 to
23.
CONFIGURATION
2
Open a DCB map and enter DCB
map configuration mode.
dcb-map name
INTERFACE
3
Disable PFC.
no pfc mode on
DCB MAP
4
Return to interface configuration
mode.
exit
DCB MAP
5
Apply the DCB map, created to
disable the PFC operation, on the
interface
dcb-map {name }
INTERFACE
6
Configure the port queues that still
function as no-drop queues for
lossless traffic. For the dot1p-
queue assignments.
The maximum number of lossless
queues globally supported on a
port is 2.
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.
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.
pfc no-drop queuesqueue-range
INTERFACE
Applying a DCB Map on a Line Card
On the C9010, DCB is supported per-line card. If the traffic handled by a DCB map is transmitted on
ports on different line cards, you must manually configure the DCB map on the backplane ports of the
C9010 line cards on which the ports reside.
• Apply a DCB map with PFC and ETS settings on the backplane ports of C9010 line cards.
CONFIGURATION mode
dcb-map {linecard {0-11 | all} [port-set {0-3 | all}] backplane all dcb-map-
name
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Data Center Bridging (DCB)