Configuration manual

Creating a DCB Map
Configure the priority-based flow control (PFC) and enhanced traffic selection (ETS) settings in a DCB
map before you can apply them on downstream server-facing ports.
Task Command Command Mode
Create a DCB map to specify the
PFC and ETS settings for groups
of dot1p priorities.
dcb-map name
CONFIGURATION
Configure the PFC setting (on or
off) and the ETS bandwidth
percentage allocated to traffic in
each priority group or whether
priority group traffic should be
handled with strict priority
scheduling.
priority-group group_num
{bandwidth percentage |
strict-priority} pfc {on
| off}
DCB MAP
Specify the priority group ID
number to handle VLAN traffic
for each dot1p class-of-service:
0 through 7. Leave a space
between each priority group
number.
priority-pgid
dot1p0_group-num
dot1p1_group-num
dot1p2_group-num
dot1p3_group-num
dot1p4_group-num
dot1p5_group-num
dot1p6_group-num
dot1p7_group-num
DCB MAP
Important Points to Remember
• If you remove a dot1p priority-to-priority group mapping from a DCB map (the no priority pgid
command), the PFC and ETS parameters revert to their default values on the interfaces on which the
DCB map is applied. By default, PFC is not applied on specific 802.1p priorities; ETS assigns equal
bandwidth to each 802.1p priority.
• To change the ETS bandwidth allocation configured for a priority group in a DCB map, do not modify
the existing DCB map configuration. Instead, first create a new DCB map with the desired PFC and
ETS settings and apply the new map to the interfaces to override the previous DCB map settings. Then
delete the original dot1p priority-priority group mapping.
Applying a DCB Map on Server-Facing Ethernet Ports
You can apply a DCB map only on a physical Ethernet interface and can apply only one DCB map per
interface.
Task
Command Command Mode
Enter Interface Configuration
mode on a server-facing port to
apply a DCB map.
interface
{tengigabitEthernet slot/
port |
fortygigabitEthernet
slot/port}
CONFIGURATION
234
PMUX Mode of the IO Aggregator