Cisco 500 series Administration Manual page 421

Configuring Quality of Service
Configuring QoS - General
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
Cisco 500 Series Stackable Managed Switch Administration Guide
• Committed Information Rate (CIR) sets the average maximum amount of
data allowed to be sent on the egress interface, measured in bits per
second
• Committed Burst Size (CBS) is the burst of data that is allowed to be sent,
even though it is above the CIR. This is defined in number of bytes of data.
To enter bandwidth limitation:
Click Quality of Service > General > Bandwidth. The Bandwidth page is
displayed.
The Bandwidth page displays bandwidth information for each interface.
The % column is the ingress rate limit for the port divided by the total port
bandwidth.
Select an interface, and click Edit. The Edit Bandwidth page is displayed.
Select the Port or LAG interface. 500 series switches also have an option to
select Unit/Port.
Enter the fields for the selected interface:
• Ingress Rate Limit—Select to enable the ingress rate limit, which is defined
in the field below.
• Ingress Rate Limit—Enter the maximum amount of bandwidth allowed on
the interface.
The two Ingress Rate Limit fields do not appear when the interface
NOTE
type is LAG.
• Egress Shaping Rate—Select to enable egress shaping on the interface.
The minimum CIR that can be configured on the Egress Shaping Rate
NOTE
field is 2Mbps instead of 64Kbps, on the following switches: SF500 ports
GE1—GE4, and SG500 ports GE—49-GE52.
• Committed Information Rate (CIR)—Enter the maximum bandwidth for the
egress interface.
• Committed Burst Size (CBS)—Enter the maximum burst size of data for the
egress interface in bytes of data. This amount can be sent even if it
temporarily increases the bandwidth beyond the allowed limit.
Click Apply. The bandwidth settings are written to the Running Configuration file.
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