C3750e-universalk9-mz.150-2.se11.bin !exclusive! May 2026

c3750e-universalk9-mz.150-2.se11.bin is a Cisco IOS software image for Catalyst 3750-E and 3750-X series switches . This specific version, 15.0(2)SE11

. The "SE" designation refers to software specifically for fixed-configuration Catalyst switches. c3750e-universalk9-mz.150-2.se11.bin

Feature Set: Universal (universalk9). This image contains all features (IP Base, IP Services, Advanced IP Services). Access to specific features depends on the Cisco License installed on the device. c3750e-universalk9-mz

So, yes, 1/0/x and 2/0/x means switch was part of stack, aka stack-wise. Try delete starting-up configuration file (start-up text) Cisco Community %DC-4-FILE_OPEN_WARNING - Cisco Community IPv6 routing (with license) MACsec (on Gigabit ports,

5. Key Features in 15.0(2)SE11

• IPv6 routing (with license)
• MACsec (on Gigabit ports, if hardware supports)
• Auto-QoS, SmartPort macros
• Private VLANs
• MST, RSTP, FlexLinks
• SNMPv3, SSH, TACACS+, RADIUS
• EnergyWise
• StackWise-Plus (stacking)
• No PoE+ negotiation issues fixed in later SE releases

• Last EOL announcement: November 2017 (Last order date).
• Last software release: 15.0(2)SE11 was one of the final rebuilds; later versions (15.0(2)SE12) exist but are rare.

No – if your 3750E is in a highly sensitive environment that requires active support. The 3750E is end-of-life. You should be planning a hardware refresh (e.g., to Catalyst 9200/9300). Running SE11 is a stopgap, not a permanent solution.

Should You Use This Image in 2025 and Beyond?

The honest answer is "Yes, but with caveats."

Step 5: Save & Reload

write memory
reload