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FC ID Allocation for HBAs
Default Company ID List
All Cisco SAN switches contain a default list of company IDs that require area allocation. Using the company
ID reduces the number of configured persistent FC ID entries. You can configure or modify these entries
using the CLI.
Persistent entries take precedence over company ID configuration. If the HBA fails to discover a target,
Caution
verify that the HBA and the target are connected to the same switch and have the same area in their FC
IDs, then perform the following procedure:
1 Shut down the port connected to the HBA.
2 Clear the persistent FC ID entry.
3 Get the company ID from the port WWN.
4 Add the company ID to the list that requires area allocation.
5 Bring up the port.
The list of company IDs have the following characteristics:
• A persistent FC ID configuration always takes precedence over the list of company IDs. Even if the
company ID is configured to receive an area, the persistent FC ID configuration results in the allocation
of a single FC ID.
• New company IDs added to subsequent releases are automatically added to existing company IDs.
• The list of company IDs is saved as part of the running and saved configuration.
• The list of company IDs is used only when the fcinterop FC ID allocation scheme is in auto mode. By
default, the interop FC ID allocation is set to auto, unless changed.
Tip
Use the fcinterop FCID allocation auto command to change the FC ID allocation and the show
running-config command to view the currently allocated mode.
• When you enter a write erase, the list inherits the default list of company IDs shipped with a relevant
release.
Verifying the Company ID Configuration
You can view the configured company IDs by entering the show fcid-allocation area command. Default
entries are listed first and the user-added entries are listed next. Entries are listed even if they were part of the
default list and you later removed them.
Cisco Nexus 5500 Series NX-OS SAN Switching Configuration Guide, Release 7.x
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We recommend that you set the fcinterop FC ID allocation scheme to auto and use the
company ID list and persistent FC ID configuration to manipulate the FC ID device
allocation.
Advanced Fibre Channel Features
OL-30895-01
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