ExpressCluster X 2.0 for Windows Reference Guide - Nec

Chapter 7 Monitor resource details
Understanding NIC link up/down monitor resources
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NIC Link Up/Down monitor resource obtains the information on how the specified NIC is linked
and monitors the linkage is up or down.
Note on NIC link up/down monitor resources
Some NIC drivers may not support the DeviceIoControl required for monitoring NIC, in which
case you cannot use this monitor resource.
Configuration and range of NIC link up/down monitoring
� The DeviceIoControl to the NIC driver is used to find how the server is linked to the network.
(For the IP monitoring, the status is judged by the ping response from the specified IP
address.)
� You can monitor an NIC dedicated to interconnect (mirror connect). If you do this in the
environment where two nodes are directly connected with a cross cable and one server fails,
the other server is considered to be failing. This is because no link is established.
The recovery action to be taken at detection of error should be configured with the appropriate
value.
For example, if you select Stop cluster service and reboot OS, other servers will continue to
restart the OS endlessly.
Displaying and changing the NIC link up/down monitor resource
details
1. Click Monitors on the tree view displayed on the left side of the Builder window.
2. List of the monitor resources is displayed in the table view on the right side of the screen.
Right click the target NIC Link Up/Down monitor resource, and click the Parameter tab in
the Monitor Resource Property window.
3. On the Parameter tab, you can display and/or change the detailed settings by following the
description below.
NIC Link UP/Down monitor resource acquires the status of the specified NIC Link and monitors
the status of being up and down of the Link.
ExpressCluster X 2.0 for Windows Reference Guide