Enabling Qos Rate Adjustment - Dell C9000 Series Networking Configuration Manual

Display summary information about a color policy for a specific interface.
Dell# show qos dscp-color-policy summary te 0/10
Interface dscp-color-map
TE 0/10 mapONE
Display detailed information about a color policy for a specific interface
Dell# show qos dscp-color-policy detail te 0/10
Interface TenGigabitEthernet 0/10
Dscp-color-map mapONE
yellow 4,7
red 20,30

Enabling QoS Rate Adjustment

By default, while rate limiting, policing, and shaping, the system 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, and no qos-rate-adjust is listed in the running-configuration
• Include a specified 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, enter 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.
Quality of Service (QoS) 925