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Configuring Egress Shaping Per Queue - Cisco SF 300-08 Administration Manual

Cisco small business 300 series managed switch
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Configuring Quality of Service
Configuring QoS
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
Cisco Small Business 300 Series Managed Switch Administration Guide

Configuring Egress Shaping per Queue

In addition to limiting transmission rate per port, which is done in the Bandwidth
,
Page
the switch can limit the transmission rate of selected egressing frames on a
per-queue per-port basis. Egress rate limiting is performed by shaping the output
load.
The switch limits all frames except for management frames. Any frames that are
not limited are ignored in the rate calculations, meaning that their size is not
included in the limit total.
Per-queue Egress rate shaping can be disabled.
To define egress shaping per queue:
Click Quality of Service > General > Egress Shaping per Queue. The Egress
Shaping Per Queue Page opens.
The Egress Shaping Per Queue Page displays the rate limit and burst size for
each queue.
Select an interface type (Port or LAG), and click Go. The list of ports/LAGs is
displayed.
Select a port/LAG, and click Edit. The Edit Egress Shaping Per Queue Page
opens.
This page enables shaping the egress for up to four queues on each interface.
Select the Interface.
For each queue that is required, enter the following fields:
Enable Shaping—Select to enable egress shaping on this queue
Committed Information Rate (CIR)—Enter the maximum rate (CIR) in Kbits
per second (Kbps). CIR is the average maximum amount of data that can be
sent.
Committed Burst Size (CBS)—Enter the maximum burst size (CBS) in bytes.
CBS is the maximum burst of data allowed to be sent even if a burst exceeds
CIR.
Click Apply. The bandwidth settings are modified, and the switch is updated.
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