What is ISR or NonISR router? Difference between ISR or
NonISR router?

Answer Posted / guest

An ISR will include the smarts and connections to support
telephony (Voice over IP) and a number of other specialist
components such as Intrusion Prevention. Cisco coined the
phrase to differentiate their products from other router
vendors (who now also include many of those features).

Presumably these days, a non-ISR router would just route
packets between different networks (which is the original
definition of them)

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