set BAUD 115200 flash_init boot flash:c3560-ipservicesk9-mz.150-2.SE11.bin Then re-check your boot system variable. Symptom: %SSH-3-NOSUPPORT: Crypto policy not supported Fix: Generate new RSA keys (minimum 2048 bits):
show version | include IOS show boot show license You should see: Cisco IOS Software, C3560 Software (C3560-IPSERVICESK9-M), Version 15.0(2)SE11 Remove old boot variable and older .bin image: c3560ipservicesk9mz1502se11bin upd
If you are in a lab, homelab, or legacy OT environment, the 15.0(2)SE11 upd is perfectly adequate—just ensure physical security and no internet exposure. The c3560ipservicesk9mz1502se11bin upd represents the end of a golden era for Cisco switching. It is the final, most polished software release for the Catalyst 3560, combining full routing capabilities (OSPF, EIGRP, BGP) with enterprise security (SSHv2, 802.1X, MACsec). The upd moniker, while informal, signals a cumulative, stable build that resolves most known issues from the original 15.0(2)SE train. set BAUD 115200 flash_init boot flash:c3560-ipservicesk9-mz
