Locking The Fabric; Verifying Cfs Lock Status - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 7 Using the CFS Infrastructure
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

Locking the Fabric

When you configure (first time configuration) a Cisco NX-OS feature (or application) that uses the CFS
infrastructure, that feature starts a CFS session and locks the fabric. When a fabric is locked, the Cisco
NX-OS software does not allow any configuration changes from a switch to this Cisco NX-OS feature,
other than the switch holding the lock, and issues a message to inform the user about the locked status.
The configuration changes are held in a pending database by that application.
If you start a CFS session that requires a fabric lock but forget to end the session, an administrator can
clear the session. If you lock a fabric at any time, your user name is remembered across restarts and
switchovers. If another user (on the same machine) tries to perform configuration tasks, that user's
attempts are rejected.

Verifying CFS Lock Status

The show cfs lock command displays all the locks that are currently acquired by any application. For
each application the command displays the application name and scope of the lock taken. If the
application lock is taken in the physical scope, then this command displays the switch WWN, IP address,
user name, and user type of the lock holder. If the application is taken in the logical scope, then this
command displays the VSAN in which the lock is taken, the domain, IP address, user name, and user
type of the lock holder.
switch# show cfs lock
Application: ntp
Scope
--------------------------------------------------------------------
Switch WWN
--------------------------------------------------------------------
20:00:00:05:30:00:6b:9e
Total number of entries = 1
Application: port-security
Scope
-----------------------------------------------------------
VSAN
-----------------------------------------------------------
1
2
Total number of entries = 2
The show cfs lock name command displays the lock details similar for the specified application.
Example 7-1
switch# show cfs lock name ntp
Scope
--------------------------------------------------------------------
Switch WWN
--------------------------------------------------------------------
20:00:00:05:30:00:6b:9e
Total number of entries = 1
OL-18084-01, Cisco MDS NX-OS Release 4.x
: Physical
IP Address
10.76.100.167
: Logical
Domain IP Address
238 10.76.100.167
211 10.76.100.167
Displays the Lock Information for the Specified Application
: Physical
IP Address
10.76.100.167
User Name User Type
admin CLI/SNMP v3
User Name User Type
admin CLI/SNMP v3
admin CLI/SNMP v3
User Name User Type
admin CLI/SNMP v3
Cisco MDS 9000 Family CLI Configuration Guide
Locking the Fabric
7-7