Brocade Communications Systems SilkWorm 3800, Hardware Reference Manual, Page: 42 / 62

A-6 SilkWorm 3800 Hardware Reference
Product Specifications
A
The serial port can be used to connect to a computer workstation to configure the switch IP address
without connecting to the fabric. The serial port’s parameters are 9600 baud, 8 data bits, no parity,
1 stop bit, and no flow control.
The port requires a straight (extension) serial cable with a female 9-pin subminiature-D connector.
Only pins 2, 3, and 5 are supported; if pin 7 is used, the signal must always be driven high, using
the pinouts listed in
Table A-6 .
POST and Boot Specifications
The switch performs POST by default when the switch is turned on, rebooted, or the system is
reset.Total boot time with POST is a minimum of three minutes.
POST can be skipped after subsequent reboots by using the fastboot command. For more
information about this command, refer to the Brocade Fabric OS Reference.
POST
The success/fail results of the diagnostic tests that run during POST can be monitored through the
error log or the command-line interface.
POST includes the following steps:
1. Preliminary POST diagnostics are run.
2. Operating system is initialized.
3. Hardware is initialized.
4. Diagnostic tests are run on several functions, including circuitry, port functionality,
memory, statistics counters, and serialization.
Table A-6 Cabling Pinouts if Pin 7 is Used
PIN Signal Description
1 -- --
2 TxData Transmit Data
3 RxData Receive Data
4 -- --
5 GND Logic Ground
6 -- --
7 CTS Clear to Send
8 -- --
9 -- --