Dell S4820T, Configuration Manual

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Dell(conf)#qos-policy-input pp_qospolicy
5. Configure the DSCP value to be set on matched packets.
QOS-POLICY-IN mode
Dell(conf-qos-policy-in)#set ip-dscp 5
6. Create an input policy map.
CONFIGURATION mode
Dell(conf)#policy-map-input pp_policmap
7. Create a service queue to associate the class map and QoS policy map.
POLICY-MAP mode
Dell(conf-policy-map-in)#service-queue 0 class-map pp_classmap qos-policy
pp_qospolicy
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
Dell(conf)#buffer-stats-snapshot
Dell(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
Dell(conf)#buffer-stats-snapshot
Dell(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. To view the buffer statistics tracking resource information depending on the type of buffer
information, such as device-level details, queue-based snapshots, or priority group-level snapshot in
the egress and ingress direction of traffic, use
show hardware stack-unit <id> buffer-
stats-snapshot unit <id> resource x
Quality of Service (QoS)
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