Interpreting Post Results; Maintaining The Switch; Installing Sfps - IBM SAN40B-4 - System Storage Switch User & Service Manual

2. Links are initialized.
3. Fabric is analyzed, and if any ports are connected to other switches, the switch
4. Switch obtains a domain ID and assigns port addresses.
5. Unicast routing tables are constructed.
6. Normal port operation is enabled.

Interpreting POST results

POST is a system check that is performed each time the switch is powered on,
rebooted, or reset, and during which the LEDs flash amber and green. Any errors
that occur during POST are listed in the error log.
To determine whether POST completed successfully and whether any errors were
detected:
1. Verify that the LEDs on the switch indicate that all components are healthy (see
2. Verify that the switch prompt displays on the terminal of a computer workstation
3. Review the switch system log for errors. Any errors detected during POST are

Maintaining the switch

The switch does not require any regular physical maintenance and is designed for
high availability and to minimize the chance of failure. To help prevent failure of the
switch due to distress or abuse, ensure that the environmental conditions, described
in "Environment considerations" on page 8, are met. Other maintenance includes
diagnostic tests and field-replaceable units, described in the following sections.

Installing SFPs

The switch only supports Brocade-branded SFPs. If you use an unqualified SFP,
the switchShow command output will show the port in an Mod_Inv state. Fabric
OS will also log the issue in the system error log.
Follow these instructions to install an SFP:
1. Making sure that the bail (wire handle) B is in the unlocked position, place the
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SAN40B-4 Installation, Service, and User's Guide
participates in a fabric configuration.
the tables in "LED patterns" on page 23). If one or more LEDs do not display a
healthy state:
a. Verify that the LEDs are not set to "beacon" (this can be determined through
the switchShow command or Web Tools). For information about how to turn
beaconing on and off, refer to the Fabric OS Administrator's Guide or the
Web Tools Administrator's Guide.
b. Follow the recommended action for the observed LED behavior, as listed in
the tables in "LED patterns" on page 23.
that is connected to the switch. If the prompt does not display when POST
completes, press Enter. If the prompt still does not display, open another Telnet
session or access the switch through another management tool. If this is not
successful, the switch did not successfully complete POST; contact IBM Service
for repair.
written to the system log, which is accessible through the errShow command.
For information about this command, refer to the Fabric OS Command
Reference. For information about error messages, refer to the Fabric OS
Message Reference.
SFP in the correctly oriented position on the port, as shown in Figure 11 on
page 27