Difference between Cisco ISR and ASR

 

Cisco ISR	Cisco ASR
ISR Stands for Integrated services router.	ASR Stands for Aggregation services router.
ISR routers are used for the Branch, Small and medium size business.	ASR routers are used for the service provider and enterprise network.
Series of the cisco ISR are- ISR 800, ISR 1900, ISR 2900, ISR 3900, ISR 4200, ISR 4300, ISR 4400 etc.	Series of the cisco ASR are- ASR 1000, ASR 5000, ASR9000 etc.
IOS	IOS XE, IOS XR