Brocade 7800 Extension Switch Hardware Reference Manual - Manual (Page 51)

Serial port specifications
The serial port is located on the port side of the Brocade 7800. The switch uses an RJ-45 connector for
the serial port. An RJ-45 to DB9 adaptor is also provided with the Brocade 7800.
NOTE
To protect the serial port from damage, keep the cover on the port when not in use.
The serial port can be used to connect to a workstation to configure the Brocade 7800 IP address
before connecting the switch to a fabric or IP network. The serial port’s parameters are fixed at 9600
baud, 8 data bits, and no parity, with flow control set to None.
Serial cable pinouts TABLE 15
PIN Signal Description
1 Not supported NA
2 Not supported NA
3 UART1_TXD Transmit data
4 GND Logic ground
5 GND Logic ground
6 UART1_RXD Receive data
7 Not supported NA
8 Not supported NA
POST and boot specifications
The Brocade 7800 runs POST by default each time it is powered on; it typically requires from 1 to 3
minutes to boot and complete POST.
POST can be skipped after subsequent reboots by entering the fastBoot command. For more
information about this command, see the Fabric OS Command Reference.
POST
The success/fail results of the diagnostic tests that run during POST can be monitored through LED
activity, the error log, or a command line interface.
POST includes the following tasks:
1. Conduct preliminary POST diagnostics
2. Initialize the operating system
Serial port specifications
Brocade 7800 Extension Switch Hardware Reference Manual 51
53-1001350-05