Configuring Traffic Parameters For Pvcs - Cisco ASR 1000 Series Software Configuration Manual
Aggregation services routers sip and spa, cisco ios xe everest 16.5
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Also See for ASR 1000 Series:
- Configuration manual (442 pages) ,
- Replacing (120 pages) ,
- Common criteria operational user guidance and preparative procedures (72 pages)
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Configuring the ATM SPAs
Command or Action
Step 5
Once you specify a specific PVC in the range,
you can continue to configure options that are
specific to that PVC, such as the class-vc
command.
Step 6
Router(config-if-atm-vc-range-pvc)# end
Configuring Traffic Parameters for PVCs
After creating a PVC, you can also configure it for the type of traffic quality of service (QoS) class to be used
over the circuit:
• Constant Bit Rate (CBR)—Configures the CBR service class and specifies the average cell rate for the
• Unspecified Bit Rate (UBR)—Configures the UBR service class and specifies the output peak rate (PCR)
• Variable Bit Rate–Non-real Time (VBR-nrt)—Configures the VBR-nrt service class and specifies the
• Variable Bit Rate–Real Time (VBR-rt)—Configures the VBR-rt service class and the peak rate and
Each service class is assigned a different transmit priority, which the Cisco ASR 1000 Series Router uses to
determine which queued cell is chosen to be transmitted out of an interface during any particular cell time
slot. This ensures that real-time QoS classes have a higher likelihood of being transmitted during periods of
congestion. THe following table lists the ATM QoS classes and their default transmit priorities.
Service Category
CBR
VBR-rt
VBR-nrt
UBR
You can configure a PVC for only one QoS service class. If you enter more than one type, only the most
recently configured QoS class takes effect on the circuit.
To configure the traffic parameters for a PVC, perform the following procedure beginning in global
configuration mode:
OL-14127-17
PVC.
for the PVC. This is the default configuration.
output PCR, output sustainable cell rate (SCR), and output maximum burst size (MBS) for the PVC.
average rate burst for the PVC.
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Purpose
Exits ATM PVC range configuration mode and returns to privileged
EXEC mode.
Transmit Priority
0 (highest)
1
2
3
Configuring Traffic Parameters for PVCs
Everest 16.5
75
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