| PRIMECLUSTER Global Link Services Configuration and Administration Guide: Multipath Function (for Solaris(TM) Operating Environment) |
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| Chapter 2 Capabilities | > 2.1 Outline of Functions | > 2.1.1 Fault monitoring system |
The connected state (Link up/down) of the transmission path between the online NIC and switch is monitored by the transmission path monitoring daemon to check the error rate of communication (I/O). Moreover, the connected state (Link up/down) of the transmission path between the standby NIC and switch is monitored by the transmission path monitoring daemon.
When some abnormalities are detected in the transmission path between the online NIC and switch, the online NIC is switched to the standby NIC then the monitoring target must be changed into the standby NIC. Moreover, when some abnormalities are detected in the transmission path between standby NIC and switch, the standby NIC will be in the unusable state.
If the communication path that changed into the unusable state by link down detection is recognized to be normal by the transmission path monitoring daemon, it will be restored automatically. It restores in about 5 seconds after the connection state of a transmission path is detected to be normal (Link up).
[Figure 2.3 Fault Monitoring of Multipath Function]
- When the FDDI card is used, the connection state (Link up/down) monitoring of the transmission path from the standby NIC to switch is not supported. Moreover, automatic restoration is not supported.
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