What are the 4.2 network tunable parameters


To get a list of the tunable parameters for networking in
PowerMAX 4.2 use the ndd command.

	$ ndd -get /dev/ip '?'
	?                             (read only)
	ip_ill_status                 (read only)
	...
	ip_max_bcast_ttl              (read and write)
	ip_pmtu_strategy              (read and write)

When you specify -get with '?' you will get a listing of all
the tunables that exist for that protocol.  You can do this
on the following devices.

	/dev/arp
	/dev/icmp
	/dev/inet/tcp*
	/dev/ip
	/dev/rawip
	/dev/tcp
	/dev/udp

To modify the tunable, as root run the following.

	# ndd -set <device> <tunable> <value>

To have the tunable modified every time you boot add the ndd
line in /etc/init.d/inetinit where the other ndd lines are
(search for $NDD).

	...
        fi
        # Override TCP/IP stack defaults
        $NDD -set /dev/tcp tcp_old_urp_interpretation 1
        $NDD -set /dev/ip ip_respond_to_timestamp 1
        $NDD -set /dev/ip ip_respond_to_timestamp_broadcast 1
	...

For more information see ndd(1).