Domain Configuration - Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Configuration Manual

Domain Configuration

S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
Domain Configuration
The configured domain ID can be preferred or static. By default, the configured domain is 0 (zero) and
the configured type is preferred. If you do not configure a domain ID, the local switch sends a random
ID in its request.
When a subordinate switch requests a domain, the following process takes place (see
1.
2.
Figure 14-2
The behavior for a subordinate switch changes based on the allowed domain ID lists, on the configured
domain ID, and on the domain ID that the principal switch has assigned to the requesting switch.
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•
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Cisco MDS 9000 Family Configuration Guide
14-4
The local switch sends a configured domain ID request to the principal switch.
The principal switch assigns the requested domain ID if available. Otherwise, it assigns another
available domain ID.
Configuration Process Using the preferred Option
Switch 7 (subordinate)
Local WWN
20:02:ab:ba:cd:dc:f4:00
Configured domain ID
7 preferred
Runtime domain ID = 7
Configured priority = 128
Runtime priority = 128
Runtime fabric name
20:01:ab:ba:cd:cd:dc:f4
Local WWN
20:03:ab:ba:cd:dc:f4:00
Configured domain ID
7 preferred
Runtime domain ID = 51
Configured priority = 128
Runtime priority = 128
Runtime fabric name
20:01:ab:ba:cd:cd:dc:f4
Switch 7 (subordinate)
When the received domain ID is not within the allowed list, the requested domain ID becomes the
runtime domain ID and all interfaces on that VSAN are isolated.
When the assigned and requested domain IDs are the same, the preferred and static options are not
relevant, and the assigned domain ID becomes the runtime domain ID.
When the assigned and requested domain IDs are different, the following cases apply:
– If the configured type is static, the assigned domain ID is discarded, all local interfaces are
isolated, and the local switch assigns itself the configured domain ID, which becomes the
runtime domain ID.
– If the configured type is preferred, the local switch accepts the domain ID assigned by the
principal switch and the assigned domain ID becomes the runtime domain ID.
1. Request configured
domain ID (7).
2. Requested domain
ID assigned,
if available (7).
3. Otherwise, another
available domain
ID assigned (51).
Chapter 14 Configuring Domain Parameters
Switch 2 (principal)
Local WWN
20:01:ab:ba:cd:dc:f4:00
Configured domain ID
0 (zero) preferred
Runtime domain ID = 3
Configured priority = 128
Runtime priority = 2
Runtime fabric name
20:01:ab:ba:cd:cd:dc:f4
Local WWN
20:04:ab:ba:cd:dc:f4:00
Configured domain ID
0 (zero) preferred
Runtime domain ID = 3
Configured priority = 128
Runtime priority = 2
Runtime fabric name
20:01:ab:ba:cd:cd:dc:f4
Switch 2 (principal)
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Figure 14-2):