DragonFly On-Line Manual Pages


ALTQ(4) 	      DragonFly Kernel Interfaces Manual	       ALTQ(4)

NAME

ALTQ -- alternate queuing of network packets

SYNOPSIS

options ALTQ options ALTQ_CBQ options ALTQ_RED options ALTQ_RIO options ALTQ_HFSC options ALTQ_PRIQ options ALTQ_FAIRQ options ALTQ_NOPCC options ALTQ_DEBUG

DESCRIPTION

The ALTQ framework provides several disciplines for queuing outgoing net- work packets. This is done by modifications to the interface packet queues. See altq(9) for details. The user interface for ALTQ is implemented by the pfctl(8) utility, so please refer to the pfctl(8) and the pf.conf(5) manpages for a complete description of the ALTQ capabilities and how to use it. Kernel Options The following options in the kernel configuration file are related to ALTQ operation: ALTQ Enable ALTQ. ALTQ_CBQ Build the ``Class Based Queuing'' discipline. ALTQ_RED Build the ``Random Early Detection'' extension. ALTQ_RIO Build ``Random Early Drop'' for input and output. ALTQ_HFSC Build the ``Hierarchical Packet Scheduler'' discipline. ALTQ_PRIQ Build the ``Priority Queuing'' discipline. ALTQ_FAIRQ Build the ``Fair Queuing'' discipline. ALTQ_NOPCC Required if the TSC is unusable. ALTQ_DEBUG Enable additional debugging facilities. Note that ALTQ-disciplines cannot be loaded as kernel modules. In order to use a certain discipline you have to build it into a custom kernel. The pf(4) interface, that is required for the configuration process of ALTQ can be loaded as a module.

SEE ALSO

pf(4), pf.conf(5), ipfw(8), pfctl(8), altq(9) DragonFly 3.7 April 6, 2008 DragonFly 3.7