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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.
DellEMC(conf)#interface twentyfiveGigE 1/1
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.
DellEMC(conf-if-tf-1/1)#Service-class buffer shared-threshold-weight queue5 4 queue7 6
Enabling Buffer Statistics Tracking
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:
1. Enable the buffer statistics tracking utility and enter the Buffer Statistics Snapshot configuration mode.
CONFIGURATION mode
DellEMC(conf)#buffer-stats-snapshot
DellEMC(conf)#no disable
Enable this utility to be able to configure the parameters for buffer statistics tracking. By default, buffer statistics tracking is
disabled.
2. Enable the buffer statistics tracking utility and enter the Buffer Statistics Snapshot configuration mode.
CONFIGURATION mode
DellEMC(conf)#buffer-stats-snapshot
DellEMC(conf)#no disable
Enable this utility to be able to configure the parameters for buffer statistics tracking. By default, buffer statistics tracking is
disabled.
3. Use show hardware buffer-stats-snapshot resource interface interface{priority-group { id
| all } | queue { ucast{id | all}{ mcast {id | all} | all} to view buffer statistics tracking resource
information for a specific interface.
EXEC/EXEC Privilege mode
DellEMC# show hardware buffer-stats-snapshot resource interface fortyGigE 1/49/1
queue all
Unit 0 unit: 0 port: 1 (interface Fo 1/49/1)
---------------------------------------
Q# TYPE Q# TOTAL BUFFERED CELLS
---------------------------------------
UCAST 0 0
UCAST 1 0
UCAST 2 0
UCAST 3 0
UCAST 4 0
UCAST 5 0
UCAST 6 0
UCAST 7 0
UCAST 8 0
UCAST 9 0
UCAST 10 0
UCAST 11 0
MCAST 0 0
MCAST 1 0
MCAST 2 0
MCAST 3 0
MCAST 4 0
MCAST 5 0
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Quality of Service (QoS)