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sys_attrs_net(5)					     sys_attrs_net(5)
Patchkit 6							   Patchkit 6



NAME

  sys_attrs_net	- net subsystem	attributes

DESCRIPTION

  This reference page lists and	describes attributes for the Network (net)
  kernel subsystem. Refer to the sys_attrs(5) reference	page for an introduc-
  tion to the topic of kernel subsystem	attributes.



  ether_cl_scheduler
      Enables (1) or disables (0) traffic control on all network interfaces
      on the system.

      Default value: 0 (disabled)

      Minimum value: 0

      Maximum value: 1



  ifqmaxlen
      Maximum number of	mbufs enqueued on an interface's output	queue before
      packets are dropped.

      Default value: 1024 (bytes)

      Minimum value: 1024

      Maximum value: 65535



  lo_def_ip_mtu
      The default maximum transmission unit (MTU) for all loopback (lo)
      interfaces.

      Default value: 4096 (bytes)

      Minimum value: 68

      Maximum value: 65535



  lodevs
      Maximum number of	loopback (lo) interfaces on a system. The interfaces
      are numbered sequentially	starting with 0	(for example, lo0).

      Default value: 1 (interface)

      Minimum value: 1

      Maximum value: 16581375 (or until	memory is exhausted)



  netisrfair
      Enables (1) or disables (0) fair allocation of netisr protocol threads.
      When enabled (1),	only 1 netisr thread runs for each protocol queue.

      Default value: 1 (enabled)

      Minimum value: 0

      Maximum value: 1



  netisrpriority
      The priority of the netisr protocol threads.

      Default value: 33

      Minimum value: 0

      Maximum value: 63



  netisrthreads
      Number of	network	threads	configured in a	system.

      Default value: n (Based on the number of CPUs in a system.  For a	sys-
      tem with one processor, the value	is 1.  For a multiprocessing system,
      the value	is 1 plus the number of	processors.)

      Minimum value: 1

      Maximum value: 50



  netisrwakeupthreshold
      Number of	packets	(packet	threshold) above which another netisr thread
      is started.

      Default value: 1 (packet)

      Minimum value: 1

      Maximum value: INT_MAX, or 2 billion



  npacketfilter
      Number of	packet filter devices on a system.

      Default value: 256 (devices), if PACKETFILTER option is configured in
      the kernel; otherwise, 0

      Minimum value: 256

      Maximum value: 4096



  nslip
      Number of	serial line internet protocol (SLIP) lines.

      Default value: 1 (line)

      Minimum value: 1

      Maximum value: 50



  route_rate_limit
      Specifies	the maximum speed for TCP traffic for any route	created	on
      the system.

      Default value: 0 (bits per 200 milliseconds)

      Minimum value: 0

      Maximum value: UINT_MAX, or 4 billion



  screen_cachedepth
      Depth of the kernel cache	used by	the screend facility.

      Default value: 8 (entries)

      Minimum value: 8

      Maximum value: 16



  screen_cachewidth
      Width of the kernel cache	used by	the screend facility.

      Default value: 8 (entries)

      Minimum value: 8

      Maximum value: 4096



  screen_maxpend
      Maximum number of	packets	pending	allowed	in the screend facility
      queue.

      Default value: 32	(packets)

      Minimum value: 32

      Maximum value: 16384

SEE ALSO

  sys_attrs(5)

  System Configuration and Tuning