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
20-3
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
Chapter 20 Troubleshooting IP Storage Services
Initial Troubleshooting Checklist
•
If there are more than 200 initiators in the running configuration, you must lower the number of
initiators to below 200 before disabling iSCSI.
•
If IVR and iSLB features are enabled in the same fabric, there should be at least one switch in the
fabric that has both of these features enabled. That switch must do any zoning related configuration
and activation (for normal zones, IVR zones, or iSLB zones) or there may be traffic disruption in
the fabric.
•
iSLB VRRP load balancing is based on the number of initiators and not on the number of sessions.
If you configure an initiator to see more targets than other initiators (resulting in more sessions on
this initiator), you should configure this initiator with a higher load metric.
•
iSLB should not be configured with Fabric Manager. Use Device Manager, which supports iSLB
with CFS distribution.
Initial Troubleshooting Checklist
Begin troubleshooting IP storage services issues by checking the following issues:
Common Troubleshooting Tools in Fabric Manager
Use the following Fabric Manager procedures to access IP interfaces, FCIP, and iSCSI:
•
Choose
Switches > Interfaces
to access IP interfaces.
•
Choose
ISLs > FCIP
to access FCIP.
•
Choose
End Devices > iSCSI
to access iSCSI.
Common Troubleshooting Commands in the CLI
Use the following commands to troubleshoot IP interface, FCIP, and iSCSI issues:
•
show ip
•
show ips arp
•
show ipv6 traffic
•
show ips ipv6
Checklist
Check off
Verify licensing requirements. See the
Cisco MDS 9000 Family Fabric Manager
Configuration Guide
.
Verify that you are not configuring IPsec with IPv6.
Verify that auto-zone and CFS distribution are enabled for iSLB.
If an Ethernet PortChannel is configured between the IPS module and an Ethernet switch,
verify that any VRRP load balancing policy on the Ethernet switch is based on
source/destination IP address.
Verify that iSCSI is enabled on the required switches in the fabric, and for the required
Gigabit Ethernet interfaces. See the
Cisco MDS 9000 Family Fabric Manager
Configuration Guide
for details.
