Configuring Port-Based Rate Policing; Configuring Port-Based Rate Shaping - Dell C9000 Series Networking Configuration Manual

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dotp or trust dot1p. When priority-tagged frames ingress a tagged port, the frames are dropped because,

for a tagged port, the default VLAN is 0.

Dell Networking OS Behavior: Hybrid ports can receive untagged, tagged, and priority tagged frames. The

rate metering calculation might be inaccurate for untagged ports because an internal assumption is made

that all frames are treated as tagged. Internally, the ASIC adds a 4-bytes tag to received untagged frames.

Though these 4-bytes are not part of the untagged frame received on the wire, they are included in the rate

metering calculation resulting in metering inaccuracy.

Configuring Port-Based Rate Policing

If the interface is a member of a VLAN, you may specify the VLAN for which ingress packets are policed.

Rate policing ingress traffic on an interface.

INTERFACE mode

Example of Configuring and Viewing Rate Policing

The following example shows configuring rate policing.

Dell#config t

Dell(conf)#interface tengigabitethernet 1/2

Dell(conf-if)#rate police 100 40 peak 150 50

Dell(conf-if)#end

Rate shaping buffers, rather than drops, traffic exceeding the specified rate until the buffer is exhausted. If any

stream exceeds the configured bandwidth on a continuous basis, it can consume all of the buffer space that

is allocated to the port.

Apply rate shaping to outgoing traffic on a port.

INTERFACE mode

Apply rate shaping to a queue.

QoS Policy mode

Example of rate shape Command

Dell(conf)#interface tengigabitethernet 1/2

Dell(conf-if)#rate shape 500 50

Dell(conf-if)#end

Quality of Service (QoS)