System Health Serdes-Loopback - Cisco MDS 9124 - Fabric Switch Reference

Chapter 21 S Commands
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

system health serdes-loopback

To explicitly run an internal Online Health Management System (OHMS) Serializer/Deserializer
(Serdes) loopback test on demand (when requested by the user) for a Fibre Channel interface, use the
system health serdes-loopback command.
On a Cisco Fabric Switch for HP c-Class BladeSystem and on a Cisco Fabric Switch for IBM
Note
BladeCenter, the syntax differs as follows:
interface {bay port | ext port}
Syntax Description interface
fc slot/port
bay port | ext port
force
frame-length bytes
frame-count number
Defaults Loopback is disabled.
The frame-length is 0. The frame-count is 1.
Command Modes EXEC mode.
Command History Release
3.0(1)
3.1(2)
Usage Guidelines
None.
Examples The following example performs a Serdes loopback test within ports for an entire module.
switch# system health serdes-loopback interface fc 4/1
OL-16217-01, Cisco MDS SAN-OS Release 3.x
system health serdes-loopback interface fc slot/port [frame-length bytes [frame-count number]
| frame-count number] [force]
Configures an interface.
(Optional) Configures the Fiber Channel interface specified by the slot and
port on an MDS 9000 Family switch.
(Optional) Configures the Fibre Channel interface on a Cisco Fabric Switch
for HP c-Class BladeSystem or on a Cisco Fabric Switch for IBM
BladeCenter. The range is 0 to 48.
Directs the software to use the non-interactive loopback mode.
Configures the specified length of the loopback test frame in bytes. The
range is 0 to 128 bytes.
Configures the specified number of frames for the loopback test. The
number of frames can range from 1 to 32.
Modification
This command was introduced.
Added the interface bay | ext option.
system health serdes-loopback
Cisco MDS 9000 Family Command Reference
21-105