Indicates whether or not a switch module is active. In order to avoid network loops, the switch hardware allows only one switch to bridge the stack's common 10Mbps and 100Mbps backplanes. Redundant switches are automatically disabled. Note that this restriction does not apply to switches that bridge one or more micro-isolated segments. Individual switch ports may be administratively enabled/disabled using the object switchPortAdminStatus. If the switch is hardware-disabled, the switch is disabled no matter what its administrative status.