HP Cisco Nexus 5000 Cisco MDS 9000 Family CLI Configuration Guide - Release 4. - Page 551

Chapter 22 Creating Dynamic VSANs DPVM Send documentation comments to [email protected] Note Autolearning is only supported for devices connected to F ports. Devices connected to FL ports are not entered into the DPVM database because DPVM is not supported on FL ports. The following conditions apply to learned entries: • If a device logs out while autolearn is enabled, that entry is automatically deleted from the active DPVM database. • If the same device logs multiple times into the switch through different ports, then the VSAN corresponding to last login is remembered. • Learned entries do not override previously configured and activated entries. • Learning is a two-part process-Enabling autolearning followed by disabling autolearning. When the auto-learn option is enabled, the following applies: - Learning currently logged-in devices-Occurs from the time learning is enabled. - Learning new device logins- Occurs as and when new devices log in to the switch. Enabling Autolearning To enable autolearning, follow these steps: Step 1 Step 2 Command switch# config t switch(config)# switch(config)# dpvm auto-learn switch(config)# no dpvm auto-learn switch(config)# clear dpvm auto-learn switch(config)# clear dpvm auto-learn pwwn pwwn Purpose Enters configuration mode. Enables learning on this switch. Disables (default) learning on this switch. Clears the list of auto-learned entries. Clears the list of auto-learned pWWN entries in the distributed DPVM database. Clearing Learned Entries You can clear DPVM entries from the active DPVM database (if autolearn is still enabled) using one of two methods. • To clear a single autolearn entry, use the clear dpvm auto-learn pwwn command. switch# clear dpvm auto-learn pwwn 55:22:33:44:55:66:77:88 • To clear all autolearn entries, use the clear dpvm auto-learn command. switch# clear dpvm auto-learn Note These two commands do not start a session and can only be issued in the local switch. OL-18084-01, Cisco MDS NX-OS Release 4.x Cisco MDS 9000 Family CLI Configuration Guide 22-5