Dell PowerVault 51F (8P Fibre Channel Switch) - Manual (Page 44)

1-16 Dell PowerVault 51F 8-Port Fibre Channel Switch Installation and Troubleshooting Guide
NOTE: For dust and electrostatic discharge (ESD) protection, the PowerVault 51F
switch includes a cover for the serial port. When not in use, the serial port should be
covered.
Verifying Power-On Self-Test (POST)
When powering on a switch, the switch conducts a series of diagnostic tests
including:
•
Memory Test
•
Port Register Test
•
Central Memory Test
•
RDRAM Test
POST behaves differently depending on the boot method. A power cycle (power off
and power on) is considered a cold boot. All other boots from a powered-on state (per
reboot, panic, and so on) are considered to be warm boots.
POST execution per cold boot executes the long version of the memory test. POST
execution per warm boot executes a shorter version of memory test. Boot time with
POST varies depending on the boot method.
As the POST successfully performs each of the tests, the message Passed is dis-
played via Telnet.
After the switch completes the POST, the GBIC module returns to a steady state from
the flashing states shown during the tests.
If an amber GBIC module light is displayed, there was a failure on that port during
POST. See “Power-On Diagnostics” in Chapter 5 for more information.
Table 1-2. Cabling Pinouts
Pin Signal Description
1 DCD Carrier Detect
2 TxData Transmit Data
3 RxData Receive Data
4 DTR Data Terminal Ready
5 GND Logic Ground
6 DSR Data Set Ready
7 RTS Request to Send
8 CTS Clear To Send
9 RI Ring Indicator