Reference Guide

Depending on the buffer space statistical values that you can obtain, you can modify the settings for
buffer area to achieve enhanced reliability and efficiency in the handling of packets. This evaluation and
administration of buffer statistics is useful and important in deployments that experience congestion
frequently. The receive buffer must be large enough to save all data that is received when the system
processes a PFC PAUSE frame.
You can use the service-class buffer shared-threshold-weight queue0 ... queue7
number command in Interface Configuration mode to specify the threshold weight for the shared buffer
for each of the queues per port.
1. Create a 10-Gigabit Ethernet interface.
Dell(conf)#interface TenGigabitEthernet 0/8
2. Configure the threshold weight of the shared buffer for the queues you want. In this example, this
setting is configured for queues 5 and 7.
Dell(conf-if-te-0/8)#Service-class buffer shared-threshold-weight queue5 4
queue7 6
Enabling Buffer Statistics Tracking
This functionality is supported on the S6000 platform.
You can enable the tracking of statistical values of buffer spaces at a global level. The buffer statistics
tracking utility operates in the max use count mode that enables the collection of maximum values of
counters.
To configure the buffer statistics tracking utility, perform the following step:
Enable the buffer statistics tracking utility and enter the Buffer Statistics Snapshot configuration
mode.
CONFIGURATION mode
Dell(conf)#buffer-stats-snapshot
Dell(conf)#no disable
You must enable this utility to be able to configure the parameters for buffer statistics tracking. By
default, buffer statistics tracking is disabled.
732
Quality of Service (QoS)