Cisco Nexus 5600 Series - CFS Distribution; CFS Distribution Modes; Uncoordinated Distribution; Coordinated Distribution

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Configuration changes that have not been committed yet (still saved as a working copy) are not in the
running configuration and do not display in the output of show commands.
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If you start a CFS session that requires a fabric lock but forget to end the session, an administrator can
clear the session.
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An empty commit is allowed if configuration changes are not previously made. In this case, the commit
command results in a session that acquires locks and distributes the current database.
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You can use the commit command only on the specific device where the fabric lock was acquired.
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CFSoIP and CFSoE are not supported for use together.
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CFS regions can be applied only to CFSoIP applications.
CFS Distribution
The CFS distribution functionality is independent of the lower layer transport. Cisco Nexus Series switches
support CFS distribution over IP. Features that use CFS are unaware of the lower layer transport.
CFS Distribution Modes
CFS supports three distribution modes to accommodate different feature requirements:
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Uncoordinated Distribution
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Coordinated Distribution
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Unrestricted Uncoordinated Distributions
Only one mode is allowed at any given time.
Uncoordinated Distribution
Uncoordinated distributions are used to distribute information that is not expected to conflict with information
from a peer. Parallel uncoordinated distributions are allowed for a feature.
Coordinated Distribution
Coordinated distributions allow only one feature distribution at a given time. CFS uses locks to enforce this
feature. A coordinated distribution is not allowed to start if locks are taken for the feature anywhere in the
network. A coordinated distribution consists of three stages:
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A network lock is acquired.
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The configuration is distributed and committed.
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The network lock is released.
Coordinated distribution has two variants:
• CFS driven —The stages are executed by CFS in response to a feature request without intervention from
the feature.
Cisco Nexus 5600 Series NX-OS System Management Configuration Guide, Release 7.x
OL-31641-01 39
Using Cisco Fabric Services
CFS Distribution