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IDT(4)		       FreeBSD Kernel Interfaces Manual			IDT(4)

NAME
     idt -- device driver for IDT NICStAR-based	ATM interfaces

SYNOPSIS
     device idt
     device atm

DESCRIPTION
     The idt device driver supports ATM	network	interfaces based on the	IDT
     NICStAR 77211 controller, including the FORE Systems ForeRunner LE25 and
     LE155.  For configuring the card for IP see natmip(4).

     ATM CBR connections are supported,	and bandwidth is allocated in slots of
     64k each.	Three VBR queues handle	traffic	for VBR	and UBR.  Two UBR
     queues prioritize UBR traffic.  ILMI and signalling get the higher	prior-
     ity queue,	as well	as UBR traffic that specifies a	peak cell rate.	 All
     other UBR traffic goes into the lower queue.

     The following sysctls are recognized by the driver:

     hw.idt.log_bufstat
	     Print statistics about buffer use to the system log periodically.

     hw.idt.log_vcs
	     Print information about VC	opens, closes, and other events	to the
	     system log.

     hw.idt.bufs_large
	     Set or print the maximum size of the 2KB buffer queue.

     hw.idt.bufs_small
	     Set or print the maximum size of the mbuf queue.

     hw.idt.cur_large
	     Print the current size of the 2KB buffer queue.

     hw.idt.cur_small
	     Print the current size of the mbuf	queue.

     hw.idt.qptr_hold
	     Optimize the TX queue buffer for lowest overhead.

SEE ALSO
     natm(4), natmip(4), ifconfig(8), route(8)

AUTHORS
     Richard Hodges, based on the original driver for FreeBSD 2.2 by Mark
     Tinguely.	Bruce M. Simpson wrote this manual page	and backported the
     driver to FreeBSD 4.9.

FreeBSD	10.1			 June 3, 2003			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHORS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=idt&sektion=4&manpath=FreeBSD+8.3-RELEASE>

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