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Chapter 8
Configuring ATM Permanent Virtual Circuit Autoprovisioning
Configuration Tasks for VBR-nrt Oversubscription
To configure the VBR-nrt Oversubscription feature, perform the following configuration tasks:
•
•
Configuring VBR-nrt Oversubscription
To enable oversubscription of ATM VCs, enter the following command in interface configuration mode:
Command
Router(config-if)# atm over-subscription-factor
{1-500}
You do not need to use the service-policy command to specify the ATM VC oversubscription because a
Note
variable bit rate (VBR) ATM VC uses sustained cell rate (SCR) to define the VC average transmission
rate.
Example 8-11
Example 8-11 Oversubscribing an ATM VC
Router(config)# interface atm 4/0/0
Router(config-if)# atm over-subscription-factor 5
Verifying ATM PVC Oversubscription
To verify the configuration of ATM PVC oversubscription, enter any of the following commands in
privileged EXEC mode:
Command
Router# show controllers interface
Router# show running-config
OL-2226-23
Configuring VBR-nrt Oversubscription, page 8-17
Verifying ATM PVC Oversubscription, page 8-17
oversubscribes an ATM interface by five times the physical transmission capacity.
Variable Bit Rate Non-Real Time Oversubscription
Purpose
Oversubscribes an ATM VC.
1-500 specifies the amount of oversubscription. The default
value is 1.
Use this command for each ATM interface that you
Note
want to oversubscribe.
Purpose
Displays the total subscribed rate of all VCs on the port.
The system allows VCs to be added provided the total subscribed
rate is less than or equal to:
port speed * over-subscription-factor.
Displays the contents of the currently running configuration file.
Indicates that oversubscription is on.
Cisco 10000 Series Router Software Configuration Guide
8-17
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Troubleshooting
