Common Cli Commands; Verifying Basic Connectivity - Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual

Troubleshooting Basics
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
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Fabric Manager and Device Manager also provide the following tools to proactively monitor your fabric:
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Common CLI Commands

Issue the following commands and examine the outputs:
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Use the show running interface CLI command to view the interface configuration in Cisco SAN-OS
Note
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:
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Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
1-4
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.
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.
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
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?
Chapter 1 Troubleshooting Overview
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