Managing NFS and KRPC Kernel Configurations in HP-UX 11i v2 (Oct 2008)

Note: If the tunable is set to a value less than 1000
milliseconds or greater than 600000 milliseconds, an
informational warning is issued at runtime. These values are
outside the tested limits.
Restrictions on Changing
The rpc_svc_idle_timeout tunable is dynamic. System reboot is not required to activate a change
made to this tunable. Changes made to this tunable are applicable for TCP connections that are
created after the value of this tunable is modified.
Modifying the Value
If you prefer to have idle TCP connections cleaned up in less than 6 minutes, decrease this value. If
you prefer that idle TCP connections remain available for longer than 6 minutes, increase this value. If
you choose a low value to close the connections quickly, it can result in frequent disconnects and
reconnects between the client and the server. This tunable only controls the server behavior.
To change the client-side behavior with respect to idle TCP connections, modify the
rpc_clnt_idle_timeout parameter. For more information, see rpc_clnt_idle_timeout
.
2.4.4 rpc_svc_ippktinfo_opt
Description
The rpc_svc_ippktinfo_opt tunable controls whether the NFS server is required to send replies to client
requests using the same IP address as the request originally used, or whether the NFS server is
allowed to respond to NFS requests using a different IP address than the one originally specified in
the client request.
Tested Values
Default: 0 (ippktinfo functionality is disabled)
Min: 0
Max: 1 (ippktinfo functionality is enabled)
Note: Before you enable this tunable, you must install the
following patches:
PHNE_36981 RPC Commands and Daemons
PHNE_37487 Kernel RPC
PHNE_37488 libnsl
PHNE_37489 Lock Manager
PHNE_37670 ARPA Transport.
Restrictions on Changing
The rpc_svc_ippktinfo_opt tunable is dynamic. System reboot is not required to activate a change
made to this tunable.
Modifying the Value
In environments where NFS clients mount filesystems from a server configured with multiple IP
interfaces or virtual IP addresses, such as Highly Available NFS Servers, it is possible for the server to
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