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21-101
Cisco MDS 9000 Family Command Reference
OL-16217-01, Cisco MDS SAN-OS Release 3.x
Chapter 21 S Commands
system health internal-loopback
Examples The following example performs the internal loopback test for a Fibre Channel interface.
switch# system health internal-loopback interface iscsi 8/1
Internal loopback test on interface iscsi 8/1 was successful.
Round trip time taken is 79 useconds
Related Commands Command Description
system health Configures Online Health Management System (OHMS) features for a
specified interface or for the entire switch.
system health
external-loopback
Explicitly runs an external OHMS loopback test on demand for a specified
interface or module.
system health
serdes-loopback
Explicitly runs an internal OHMS Serializer/Deserializer (Serdes) loopback
test on demand for a Fibre Channel interface.
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