Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 33 Configuring Domain Parameters
Domain IDs
This section describes how to configure domain IDs and includes the following topics:
• About Domain IDs, page 33-7
• Specifying Static or Preferred Domain IDs, page 33-9
• About Allowed Domain ID Lists, page 33-9
• Configuring Allowed Domain ID Lists, page 33-10
• About CFS Distribution of Allowed Domain ID Lists, page 33-10
• Enabling Distribution, page 33-10
• Locking the Fabric, page 33-11
• Committing Changes, page 33-11
• Discarding Changes, page 33-11
• Clearing a Fabric Lock, page 33-12
• Displaying CFS Distribution Status, page 33-12
• Displaying Pending Changes, page 33-12
• Displaying Session Status, page 33-13
• About Contiguous Domain ID Assignments, page 33-13
• Enabling Contiguous Domain ID Assignments, page 33-13
About Domain IDs
The configured domain ID can be preferred or static. By default, the configured domain ID is 0 (zero)
and the configured type is preferred.
Note The 0 (zero) value can be configured only if you use the preferred option.
If you do not configure a domain ID, the local switch sends a random ID in its request. We recommend
that you use static domain IDs.
When a subordinate switch requests a domain, the following process takes place (see Figure 33-2):
1. The local switch sends a configured domain ID request to the principal switch.
2. The principal switch assigns the requested domain ID if available. Otherwise, it assigns another
available domain ID.