If you enter a forbidden combination of line modules or exceed the slot group bandwidth when you have not configured bandwidth oversubscription, you will see an error message.
For example, suppose you originally configure the router for bandwidth oversubscription and then want to change to full line rate performance. You forget to remove line modules or disable slots, and enter the no bandwidth oversubscription command. The following message appears:
- host1(config)#no bandwidth oversubscription
- % failed : bandwidth over subscribed at slot 0-2
To resolve the problem, remove the unwanted line modules, or disable the slots that contain those line modules.