Cisco MDS-9124 Troubleshooting Guide - Page 36

Troubleshooting Basics Chapter 1 Troubleshooting Overview Send documentation comments to [email protected] • View traffic statistics-In Device Manager, click the Device tab, select one or more ports, right-click and choose Monitoring from the pop-up menu. Fabric Manager and Device Manager also provide the following tools to proactively monitor your fabric: • ISL performance-In Fabric Manager, click the ISL Performance icon. • Network monitoring-In Device Manager, click the Summary tab. • Performance monitoring-In Fabric Manager, choose Performance > Start Collection. Common CLI Commands Issue the following commands and examine the outputs: • show module • show version • show running-config • show logging log • show interfaces brief • show fcns • show flogi • show hardware internal errors • show zoneset active • show accounting log Note Use the show running interface CLI command to view the interface configuration in Cisco SAN-OS Release 3.0(1) or later. The interface configuration as seen in the show running-config CLI command is no longer consolidated. Note To issue commands with the internal keyword, you must have an account that is a member of the network-admin group. Verifying Basic Connectivity Answer the following questions to verify basic connectivity between your end devices: • Are you using the correct fiber (SM or MM)? • Did you check for a broken fiber? • Is the Fibre Channel port LED on the connected module green, and do the LEDs on any host bus adapter (HBA)/storage subsystem ports indicate normal functionality? • Is there a LUN masking policy applied on the storage subsystem? If yes, is the server allowed to see the LUNs exported by the storage array? • Is there a LUN masking policy configured on the host? Did you enable the server to see all the LUNs it can access? • If LUN masking software is used, is the host's pWWN listed in the LUN masking database? Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x 1-4 OL-9285-05