The Enterasys 7C111 Matrix N1 chassis with two integrated power supplies and six integrated fans provides only a single slot therefore, it has no backplane bus. Any Enterasys DFE switch (7X or 4X) may be installed into a 7C111 chassis, where it will operate as a standalone "DFE system". However, the installed switch must be running firmware version 5.12.02 or higher to operate properly. Otherwise, the module will not boot, and will display a red CPU LED.
If an upgrade of the firmware on the switch to version 5.12.02 or higher is required, a serial download (Zmodem) must be performed, since the switch will not be fully operational in the 7C111 chassis.
The Zmodem upgrade procedure is explained in the "Downloading via the Serial Port" section of the Matrix DFE Series Configuration Guide.
As an alternative, the switch can be temporarily moved to a multi-slot supported chassis N3, N5, N7, or E7 to perform a TFTP/FTP upgrade to the new firmware.
Questions? Comments? Please leave your questions and comments below.