Enabling Qos Rate Adjustment - Dell S3048-ON Configuration Manual

summary: Displays summary information about a color policy on one or more interfaces.
detail: Displays detailed color policy information on an interface
interface : Enter the name of the interface that has the color policy configured.
Examples for Displaying a DSCP Color Policy
Display summary information about a color policy for one or more interfaces.
Dell# show qos dscp-color-policy summary
Interface dscp-color-map
GI 1/10 mapONE
GI 1/11 mapTWO
Display summary information about a color policy for a specific interface.
Dell# show qos dscp-color-policy summary gigabitethernet 1/10
Interface dscp-color-map
GI 1/10 mapONE
Display detailed information about a color policy for a specific interface
Dell# show qos dscp-color-policy detail gigabitethernet 1/10
Interface GigabitEthernet 1/10
Dscp-color-map mapONE
yellow 4,7
red 20,30

Enabling QoS Rate Adjustment

By default while rate limiting, policing, and shaping, Dell Networking OS does not include the Preamble, SFD, or the IFG fields. These fields
are overhead; only the fields from MAC destination address to the CRC are used for forwarding and are included in these rate metering
calculations.
The Ethernet packet format consists of:
• Preamble: 7 bytes Preamble
• Start frame delimiter (SFD): 1 byte
• Destination MAC address: 6 bytes
• Source MAC address: 6 bytes
• Ethernet Type/Length: 2 bytes
• Payload: (variable)
• Cyclic redundancy check (CRC): 4 bytes
• Inter-frame gap (IFG): (variable)
You can optionally include overhead fields in rate metering calculations by enabling QoS rate adjustment.
QoS rate adjustment is disabled by default.
• Specify the number of bytes of packet overhead to include in rate limiting, policing, and shaping calculations.
CONFIGURATION mode
qos-rate-adjust overhead-bytes
For example, to include the Preamble and SFD, type qos-rate-adjust 8. For variable length overhead fields, know the number of
bytes you want to include.
The default is disabled.
The range is from 1 to 31.
652 Quality of Service (QoS)