Cisco ISR4321, ISR4331, ISR4431, and ISR4461: In-Depth Review and Performance Test
Answer first: ISR4321, ISR4331, ISR4431, and ISR4461 are Cisco ISR 4000 branch platforms, but lifecycle and supported configurations differ by PID. Cisco lists the series as end of sale, with model-specific support dates. Check the official support and lifecycle page, compare the Catalyst 8200 successor family, and ...