Port Issues - 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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Port Issues

Initial tasks to perform while investigating port connectivity issues include:
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Basic port monitoring using Device Manager begins with the visual display in the Device View. (See
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Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
1-6
Are both the HBA and the subsystem port successfully registered with the fabric name server?
Does the correct pWWN for the server HBA and the storage subsystem port show up on the correct
port in the FLOGI database? In other words, is the device plugged into the correct port?
Does any single zone contain both devices? The zone members can be WWNs or FC IDs.
Is the zone correctly configured and part of the active configuration or zone set within the same
VSAN?
Do the ISLs show any VSAN isolation?
Do the host and storage belong to the same VSAN?
Are any parameters, such as FSPF, static domain assignment, VSAN, or zoning, mismatched in the
configuration of the different switches in the fabric?
Verify correct media: copper or optical; single-mode (SM) or multimode (MM).
Is the media broken or damaged?
Is the LED on the switch green?
Is the active LED on the HBA for the connected device on?
1-1.) Port display descriptions include:
Green box: A successful fabric login has occurred; the connection is active.
Red X: A small form-factor pluggable (SFP) transceiver is present but there is no connection. This
could indicate a disconnected or faulty cable, or no active device connection.
Red box: An SFP is present but fabric login (FLOGI) has failed. Typically there is a mismatch in
port or fabric parameters with the neighboring device. For example, a port parameter mismatch
would occur if a node device were connected to a port configured as an E port. An example of a
fabric parameter mismatch would be differing timeout values.
Yellow box: In Device Manager, a port has been selected.
Gray box: The port is administratively disabled.
Black box: An SFP is not present.
Chapter 1 Troubleshooting Overview
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