HP Cisco MDS 9216i Cisco MDS 9000 Family Fabric Manager Configuration Guide - - Page 303

Chapter 13 Using the CFS Infrastructure CFS Application Requirements Send documentation comments to [email protected] Step 2 In the information pane, from the drop-down menu, choose disable or enable for a switch. Step 3 Click the Apply Changes icon to commit the configuration changes. To globally disable or enable CFS distribution on a switch using Device Manager, follow these steps: Step 1 Step 2 Step 3 Choose Admin > CFS (Cisco Fabric Services). You see the CFS dialog box with the CFS status for all features on that switch. Uncheck or check the Globally Enabled check box to disable or enable CFS distribution on this switch. Click Apply to disable CFS on this switch. CFS Application Requirements All switches in the fabric must be CFS capable. A Cisco MDS 9000 Family switch is CFS capable if it is running Cisco SAN-OS Release 2.0(1b) or later, or MDS NX-OS Release 4.1(1) or later. Switches that are not CFS capable do not receive distributions and result in part of the fabric not receiving the intended distribution. CFS has the following requirements: • Implicit CFS usage-The first time you issue a CFS task for a CFS-enabled application, the configuration modification process begins and the application locks the fabric. • Pending database-The pending database is a temporary buffer to hold uncommitted information. The uncommitted changes are not applied immediately to ensure that the database is synchronized with the database in the other switches in the fabric. When you commit the changes, the pending database overwrites the configuration database (also known as the active database or the effective database). • CFS distribution enabled or disabled on a per-application basis-The default (enable or disable) for CFS distribution state differs between applications. If CFS distribution is disabled for an application, then that application does not distribute any configuration nor does it accept a distribution from other switches in the fabric. • Explicit CFS commit-Most applications require an explicit commit operation to copy the changes in the temporary buffer to the application database, to distribute the new database to the fabric, and to release the fabric lock. The changes in the temporary buffer are not applied if you do not perform the commit operation. Enabling CFS for an Application All CFS-based applications provide an option to enable or disable the distribution capabilities. Features that existed prior to Cisco SAN-OS Release 2.0(1b) have the distribution capability disabled by default and must have distribution capabilities enabled explicitly. Applications introduced in Cisco SAN-OS Release 2.0(1b) or later, or MDS NX-OS Release 4.1(1) or later have the distribution enabled by default. OL-17256-03, Cisco MDS NX-OS Release 4.x Cisco MDS 9000 Family Fabric Manager Configuration Guide 13-5