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
21-113
Cisco MDS 9000 Family Command Reference
OL-18089-01, Cisco MDS NX-OS Release 4.x
Chapter 21 S Commands
system health external-loopback
system health external-loopback
To explicitly run an external Online Health Management System (OHMS) loopback test on demand
(when requested by the user) for a specified interface or module, use the
system health
external-loopback
command.
system health external-loopback
{
interface fc
slot
/
port |
source interface fc
slot
/
port
destination
fc
slot
/
port}
[
frame-length
bytes
[
frame-count
number
]
| frame-count
number
] [
force
]
Note
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
Defaults
The loopback is disabled.
The frame-length is 0. The frame-count is 1.
Command Modes
EXEC mode.
Command History
interface
Configures an interface.
fc
slot
/
port
(Optional) Configures the Fibre Channel interface specified by the slot
and port on an MDS 9000 Family switch.
source
Specifies the source Fibre Channel interface.
destination
Specifies the destination Fibre Channel interface.
bay | ext
port
(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.
frame-length
bytes
Configures the specified length of the loopback test frame in bytes. The
range is 0 to 128 bytes.
frame-count
number
Configures the specified number of frames for the loopback test. The
number of frames can range from 1 to 32.
force
Directs the software to use the non-interactive loopback mode.
Release
Modification
1.3(4)
This command was introduced.
3.0(1)
Added the
source
and
destination
keywords and the
frame-count
and
frame-length
options.
3.1(2)
Added the
interface bay
|
ext
option.