Using NFS as a file system type with HP Serviceguard A.11.20 on HP-UX and Linux

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If there is more than one switch between the NFS server and the Serviceguard nodes, set
CONFIGURED_IO_TIMEOUT_EXTENSION to the sum of the MBTD values for each of the switches in the path (remember to
use microseconds).
In the example in figure 2, with two switches between the NFS server and the NFS client, set the
CONFIGURED_IO_TIMEOUT_EXTENSION to the sum of all switches MBTD value in microseconds, which in this case is
1+1 = 2 seconds; so set CONFIGURED_IO_TIMEOUT_EXTENSION to 2000000.
Figure 2. The NFS client and the NFS server with two network switches configured between them