Service Manual

Command History
Version 9.3(0.0) Introduced on the FC Flex IO module installed in the MXL 10/40GbE Switch module
platform.
Usage Information
PFC and ETS settings are not pre-configured on Ethernet ports. You must use the dcb-map command to
configure different groups of 802.1p priorities with PFC and ETS settings.
Using the priority-pgid command, you assign each 802.1p priority to one priority group. A priority group
consists of 802.1p priority values that are grouped together for similar bandwidth allocation and scheduling, and
that share latency and loss requirements. All 802.1p priorities mapped to the same queue must be in the same
priority group. For example, the
priority-pgid 0 0 0 1 2 4 4 4 command creates the following groups
of 802.1p priority traffic:
• Priority group 0 contains traffic with dot1p priorities 0, 1, and 2.
• Priority group 1 contains traffic with dot1p priority 3.
• Priority group 2 contains traffic with dot1p priority 4.
• Priority group 4 contains traffic with dot1p priority 5, 6, and 7.
To remove a priority-pgid configuration from a DCB map, enter the no priority-pgid command.
qos-policy-buffer
Create a QoS policy buffer and enter the configuration mode to configure the no-drop queues, ingress buffer size, buffer limit for pausing,
and buffer offset limit for resuming.
Syntax
qos-policy-buffer queue queue-num pause no-drop queue buffer-size size pause-
threshold threshold-value resume-offset threshold-value shared-threshold-weight
size
Parameters
policy-name Name of the QoS policy buffer that is applied to an interface for this setting to be
effective in conjunction with the DCB input policy. You can specify the shared buffer
threshold limit, the ingress buffer size, buffer limit for pausing the acceptance of packets,
and the buffer offset limit for resuming the acceptance of received packets. This method
of configuration enables different peer-provided and administrative priorities to be set up
because the intended queue is directly configured instead of determining the priority to
queue mapping for local and remote parameters.
queue 0 to queue 7 Specify the queue number to which the QoS policy buffer parameters apply
pause Pause frames to be sent at the specified buffer limit levels and pause packet settings
no-drop The packets for this queue must not be dropped
value Enter a number in the range of 0 to 7 to denote the priority to be allocated to the
dynamic buffer control mechanism
buffer-size Ingress buffer size
size Size of the ingress buffer in KB. Enter a number in the range of 0 to 7787. The default is
45 KB.
pause-threshold Buffer limit for pause frames to be sent
threshold-value Buffer limit at which the port sends the pause to peer in KB. Enter a number in the range
of 0 to 7787. The default is 10 KB.
394 Data Center Bridging (DCB)