System Health Serdes-Loopback - Cisco MDS 9000 series Command Reference Manual

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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

BladeCenter, the syntax differs as follows:

interface {bay port | ext port}

Syntax Description

fc slot/port

bay port | ext port

frame-length bytes

frame-count number

Loopback is disabled.

The frame-length is 0. The frame-count is 1.

Command Modes

Command History

Usage Guidelines

OL-8413-07, 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