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36-12
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 36 Configuring Inverse Muliplexing over ATM
How to Configure ATM Class of Service
Configuring Unspecified Bit Rate
Complete the following steps to configure Unspecified Bit Rate (UBR) QoS class for an ATM permanent
virtual circuit () and to specify the bandwidth on the Cisco ASR 901 series router.
SUMMARY STEPS
1. enable
2. configure terminal
3. interface ATMslot/imagroup-number
4. VPI/VCI l2transport
5. ubr pcr
DETAILED STEPS
Step 3
interface ATM
slot/
IMA
group-number
Example:
Router(config)# interface ATM1/IMA0
Configures an ATM interface and enters the interface configuration
mode.
Step 4
pvc
VPI/VCI
l2transport
Example:
Router(config-if)# 100/12 l2transport
Specifies the VPI and VCI of the PVC and configures the PVC in
layer 2 transport mode.
• l2transport is an optional field.
Step 5
cbr
rate
Example:
Router(config-if-atm-vc)# cbr 16000
Configures the constant bit rate (CBR) QoS class for an ATM
permanent virtual circuit () and specifies the bandwidth.
• rate—Peak cell rate in Kbps.
Command Purpose
Command Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters the global configuration mode.
Step 3
interface ATM
slot
/IMA
group-number
Example:
Router(config)# interface ATM1/IMA0
Configures an ATM interface and enters the interface configuration
mode.