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McDATA® 4Gb SAN Switch for HP p-Class BladeSystem user guide 77
Switch administrative states
The switch administrative state determines the operational state of the switch. The switch administrative
state exists in two forms: the configured administrative state and the current administrative state.
• The configured administrative state is the state that is saved in the switch configuration and is preserved
across switch resets. McDATA Web Server always makes changes to the configured administrative
state. The configured administrative state is displayed in the Switch Properties dialog.
• The current administrative state is the state that is applied to the switch for temporary purposes and is
not retained across switch resets. The current administrative state is set using the Set Switch command.
Refer to the ”Set command” on page 154.
Table 11 describes the administrative state values.
Domain ID and domain ID lock
The domain ID is a unique value from 97–127 that identifies each switch in the fabric. The FC address
consists of the domain ID, port ID, and the Arbitrated Loop Physical Address (ALPA). The maximum number
of switches within a fabric is 31 with each switch having a unique domain ID.
Switches come from the factory with the Domain ID Lock setting disabled (False). This means that if there is
a domain ID conflict in the fabric, the switch with the highest principal priority, or the principal switch, will
reassign any domain ID conflicts and establish the fabric. If you lock the domain ID on a switch and a
domain ID conflict occurs, one of the switches will isolate as a separate fabric and the Logged-In LEDs on
both switches will flash to show the affected ports. Refer to the ”Set Config command” on page 156 for
information about the Switch keyword and the Domain ID Lock and Principal Priority parameters.
If you connect a new switch to an existing fabric with its domain ID unlocked, and a domain conflict
occurs, the new switch will isolate as a separate fabric. However, you can remedy this by resetting the new
switch or taking it offline then back online. The principal switch will reassign the domain ID and the switch
will join the fabric.
NOTE: Domain ID reassignment is not reflected in zoning that is defined by domain ID and port number
pair. You must reconfigure zones that are affected by domain ID reassignment.
The McDATA 4Gb SAN Switch displays domain IDs differently in Standard mode than other M-series
directors and edge switches. When the McDATA 4Gb SAN switch is in Standard mode (default), the
domain ID will be displayed differently depending on which management utility is used. The valid Domain
ID range while in standard mode is 97 (default) —127. McDATA Web Server and CLI will display this as
97—127. EFCM/HAFM will display this as 1—31.
Prior to changing from Standard mode to McDATA Fabric mode, it is recommended that the switch be
isolated from the fabric (take switch offline) before making the configuration changes and all domain IDs in
the fabric should be noted to avoid conflicts. Once isolated, using CLI or McDATA Web Server, change
interop mode to McDATA Fabric mode, and change the domain ID to a unique ID within the valid range of
1—31 for McDATA Fabric mode. It is then recommended that the Domain ID be locked to prevent conflict
within the fabric. When all changes have been made and the switch has been brought back online, it
should then be added into the fabric.
Table 11 Switch administrative states
Parameter Description
Online The switch is available
Offline The switch is unavailable
Diagnostics The switch is in diagnostics mode, is unavailable, and tests can
then be run on all ports of the switch. The switch must be reset
after leaving the Diagnostics state.