Cisco MDS 9000 Series Command Reference

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21-84
Cisco MDS 9000 Family Command Reference
OL-8413-07, Cisco MDS SAN-OS Release 3.x
Chapter 21 S Commands
system health (Configuration mode)
system health (Configuration mode)
To configure Online Health Management System (OHMS) features for a specified interface or for the
entire switch, use the system health command. To disable this feature, use the no form of the command.
system health [failure-action | interface {fc slot/port | iscsi slot/port} |
loopback {frame-length {bytes | auto} | frequency seconds}]
no system health [failure-action | interface {fc slot/port | iscsi slot/port}]
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 Enabled.
Frame-length is auto-size, which could range from 0 to 128.
Command Modes Configuration mode.
Command History
failure-action Prevents the SAN-OS software from taking any OHMS action for the
entire switch.
interface Configures an interface.
fc slot/port (Optional) Specifies the Fibre Channel interface to configure by slot and
port number on an MDS 9000 Family switch.
iscsi slot/port (Optional) Specifies the iSCSI interface to configure by slot and port
number on an MDS 9000 Family switch.
bay port | ext port (Optional) Configures the Fibre Channel interface on a port 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.
loopback Configures the OHMS loopback test.
frame-length bytes Specifies the frame-length in bytes ranging from 0 to 128 bytes for the
loopback test.
auto Configures the frame-length to auto for the loopback test.
frequency seconds Specifies the loopback frequency in seconds ranging from 5 seconds
(default) to 255 seconds.
Release Modification
1.3(4) This command was introduced.
3.0(1) Added the frame-length and auto options to the loopback keyword.
3.1(2) Added the interface bay | ext option.

Cisco MDS 9000 Series Specifications

General

Category	Switch
Operating System	Cisco NX-OS
Ports	Varies by model
Protocols	Fibre Channel (FC), Fibre Channel over IP (FCIP), iSCSI
Redundancy	Redundant supervisors, power supplies, and fans
Management	Cisco Data Center Network Manager (DCNM), CLI, SNMP
Virtualization Support	VSANs (Virtual SANs)
Security Features	Fibre Channel Security Protocol (FC-SP)
Hot Swappable Components	power supplies, fans
Power Supply Options	AC and DC options available