Dell S4810 - Data Center Bridging: Default Configuration

Step Task Command Command Mode
5
Apply the DCB map, created to disable the
PFC operation, on the interface
dcb-map {name |
default}
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
Data Center Bridging: Default Configuration
This functionality is supported on the platform.
Before you configure PFC and ETS on an S6000 switch (see Configuring DCB Maps and its Attributes),
take into account the following default settings:
DCB is enabled.
PFC and ETS are globally enabled by default.
The default dot1p priority-queue assignments are applied as follows:
Dell(conf)#do show qos dot1p-queue-mapping
Dot1p Priority : 0 1 2 3 4 5 6 7
Queue : 2 0 1 3 4 5 6 7
Dell(conf)#
NOTE: In Egress queue assignment (8 queues in S6000, 4 against in S5000 / S4810.
PFC is not applied on specific dot1p priorities.
ETS: Equal bandwidth is assigned to each port queue and each dot1p priority in a priority group.
To configure PFC and ETS parameters on an S6000 interface, you must specify the PFC mode, the ETS
bandwidth allocation for a priority group, and the 802.1p priority-to-priority group mapping in a DCB
map. No default PFC and ETS settings are applied to Ethernet interfaces.
Data Center Bridging (DCB)
571