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25-2
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-17256-03, Cisco MDS NX-OS Release 4.x
Chapter 25 Configuring Domain Parameters
Fibre Channel Domains
Fibre Channel Domains
This section describes each fcdomain phase:
• Principal switch selection—This phase guarantees the selection of a unique principal switch across
the fabric.
• Domain ID distribution—This phase guarantees each switch in the fabric obtains a unique domain
ID.
• FC ID allocation—This phase guarantees a unique FC ID assignment to each device attached to the
corresponding switch in the fabric.
• Fabric reconfiguration—This phase guarantees a resynchronization of all switches in the fabric to
ensure they simultaneously restart a new principal switch selection phase.
Figure 25-1 shows a sample fcdomain configuration.
Figure 25-1 Sample fcdomain Configuration
Note Domain IDs and VSAN values used in all procedures are only provided as examples. Be sure to use IDs
and values that apply to your configuration.
This section describes the fcdomain feature and includes the following topics:
• About Domain Restart, page 25-3
Local WWN
20:02:ab:ba:cd:dc:f4:00
Configured domain ID
0 (zero) preferred
Runtime domain ID = 7
Configured priority = 128
Runtime priority = 128
Runtime fabric name
20:01:ab:ba:cd:cd:dc:f4
Local WWN
20:01:ab:ba:cd:dc:f4:00
Configured domain ID
0 (zero) preferred
Runtime domain ID = 2
Configured priority = 128
Runtime priority = 2
Runtime fabric name
20:01:ab:ba:cd:cd:dc:f4
Local WWN
20:03:ab:ba:cd:dc:f4:00
Configured domain ID
0 (zero) preferred
Runtime domain ID = 102
Configured priority = 128
Runtime priority = 128
Runtime fabric name
20:01:ab:ba:cd:cd:dc:f4
7.0.1
7.0.2
7.0.0
99.0.1
99.0.2
99.0.3
99.1.2
99.1.1
79953
Switch 7 (subordinate)
Switch 99 (subordinate)
Switch 2 (principal)
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