Configuration manual
20422 1 10 0 0x0 0 0 0.0.0.0/0 0.0.0.0/0 14 1
24511 1 0 0 0x0 0 0 0.0.0.0/0 0.0.0.0/0 - 0
In the previous example, the ClassAF1 does not classify traffic as intended. Traffic matching the first
match criteria is classified to Queue 1, but all other traffic is classified to Queue 0 as a result of CAM entry
20419.
When you remove the explicit “deny any” rule from all three ACLs, the CAM reflects exactly the desired
classification.
The following example shows correct traffic classifications.
Dell#show cam layer3-qos interface tengigabitethernet 2/49
Cam Port Dscp Proto Tcp Src Dst SrcIp DstIp DSCP Queue
Index Flag Port Port Marking
-------------------------------------------------------------------------
20416 1 18 IP 0x0 0 0 23.64.0.5/32 0.0.0.0/0 20 2
20417 1 0 IP 0x0 0 0 23.64.0.2/32 0.0.0.0/0 10 1
20418 1 0 IP 0x0 0 0 23.64.0.3/32 0.0.0.0/0 12 1
20419 1 10 0 0x0 0 0 0.0.0.0/0 0.0.0.0/0 14 1
24511 1 0 0 0x0 0 0 0.0.0.0/0 0.0.0.0/0 - 0
Create a QoS Policy
There are two types of QoS policies — input and output.
Input QoS policies regulate Layer 3 and Layer 2 ingress traffic. The regulation mechanisms for input QoS
policies are rate policing and setting priority values. There are two types of input QoS policies: Layer 3
and Layer 2.
Output QoS policies regulate egress traffic. The regulation mechanisms for output QoS policies are
bandwidth percentage, scheduler strict, rate shaping, and WRED.
NOTE: When changing a "service-queue" configuration in a QoS policy map, all QoS rules are
deleted and re-added automatically to ensure that the order of the rule is maintained. As a result,
the Matched Packets value shown in the show qos statistics command is reset.
NOTE: To avoid issues misconfiguration causes, Dell Networking recommends configuring either
DCBX or Egress QoS features, but not both simultaneously. If you enable both DCBX and Egress
QoS at the same time, the DCBX configuration is applied and unexpected behavior occurs on the
Egress QoS.
Creating an Input QoS Policy
To create an input QoS policy, use the following steps.
1. Create a Layer 3 input QoS policy.
CONFIGURATION mode
qos-policy-input
Create a Layer 2 input QoS policy by specifying the keyword layer2 after the qos-policy-input
command.
2. After you create an input QoS policy, do one or more of the following:
Configuring Policy-Based Rate Policing
706
Quality of Service (QoS)