C2960s-universalk9-mz.152-2.e9.bin
This image is strictly for the 2960-S hardware. It is not compatible with the 2960-X or 2960-CX, despite similarities in the naming convention. The "universalk9" image for the 2960-S typically requires 128MB of Flash and 256MB of DRAM (standard configuration for later 2960-S units). Early 2960-S units with only 64MB of Flash cannot accommodate this larger universal image without memory upgrades.
One major point of confusion: The file name includes universalk9, but your switch may not run all “universal” features out of the box. c2960s-universalk9-mz.152-2.e9.bin
After booting c2960s-universalk9-mz.152-2.e9.bin, use show license right-to-use to see what is active. To unlock IP Services on a 2960S, you need a license file or RTU activation: This image is strictly for the 2960-S hardware
license right-to-use activate ipservices accept
reload
Without an upgraded license, the switch behaves like a LAN Base image even though the filename says “universal.” After booting c2960s-universalk9-mz
Switch# show version
Switch# show boot
Switch# show flash | include .bin
Expected output snippet for show version:
Cisco IOS Software, C2960S Software (C2960S-UNIVERSALK9-M), Version 15.2(2)E9
The filename follows the standard Cisco IOS naming structure:
mz: Memory/Compression.
152-2.e9: Version Number.
.bin: File Extension. Indicates this is a binary executable file.