Cisco IOS XE 3S–to–Cisco IOS Release Number Mapping Cisco IOS XE 3S Release Cisco IOS Release 3.17 15.6(1)S 3.16 15.5(3)S 3.15 15.5(2)S 3.14 15.5(1)S 3.13S 15.4(3)S 3.12S 15.4(2)S 3.11S 15.4(1)S 3.10S 15.3(3)S 3.9S 15.3(2)S 如上的IOS Release Number Mapping适用于 Cisco 4000 Series ISRs等设备 Cisco ISR 4400 Series Cisco ISR 4300 Series Cisco ISR 4431 Cisco ISR 4321 Cisco ISR 4451 Cisco ISR 4331 Cisco ISR 4351 好好学习,天天向上!