Post And Boot Specifications; Post; Boot; Ethernet Led Patterns - IBM 2498B24 - System Storage SAN24B-4 Switch Installation, Service And User Manual

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POST and boot specifications

POST

Boot

Ethernet LED patterns

Each Ethernet port has two LEDs, which are described in Table 7
Table 7. Ethernet LED patterns
LED name LED color
Ethernet speed LED No light
(right)
Steady green
Ethernet link status No light
LED (left)
Blinking amber
Solid Amber
When the switch is turned on or rebooted, the switch performs POST. Total boot
time with POST is up to 3 minutes. POST can be omitted after subsequent reboots
by using the fastboot command or entering the diagDisablePost command to
persistently disable POST.
For more information about these commands, refer to the Fabric OS Command
Reference Manual.
The success or failure 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.
In addition to POST, boot includes the following steps after POST is complete:
1. Universal port configuration is performed.
2. Links are initialized.
3. Fabric is analyzed, and if any ports are connected to other switches, the switch
participates in a fabric configuration.
4. Switch obtains a domain ID and assigns port addresses.
5. Unicast routing tables are constructed.
6. Normal port operation is enabled.
Recommended
Status of hardware action
Port speed is 10 No action is required.
Mb/sec.
Port speed is 100 No action is required.
Mb/sec.
No link detected Verify the Ethernet
cable is connected
correctly.
There is link activity No action is required.
(traffic).
There is a link. No action is required.
Chapter 3. Operating the switch
25