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nl-qdisc-delete(8) [debian man page]

nl-qdisc(8)						      System Manager's Manual						       nl-qdisc(8)

NAME

       nl-qdisc-{add|list|delete} - Manage queueing disciplines

SYNOPSIS

       nl-qdisc-add --dev dev --parent id [OPTIONS] qdisc-type [QDISC]

       nl-qdisc-delete [ --interactive ] [OPTIONS]

       nl-qdisc-list [OPTIONS]

DESCRIPTION

       The nl-qdisc tools allow to manage and configure queueing disciplines (qdiscs) in the kernel.

OPTIONS

       -h or --help
	      Print help text to console and exit.

       -v or --version
	      Print versioning information to console and exit.

       -q or --quiet
	      Do  not  print  informal	notifications  about  actions  taken  to  the  console.   By  default  a  short  description of each qdisc
	      added/update/deleted will be printed to the console. This option disables this behaviour.

       -d or --dev=DEV
	      Network device the qdisc is attached to.

       -p or --parent=ID
	      Identifier of the parent qdisc/class this qdisc is attached to. The identifier can be specified as classid, name or one of the  spe-
	      cial values "root" or "ingress".

       -i or --id=ID
	      Identifier of qdisc. It can be specified as classid or name.

   nl-qdisc-add Options
       --update
	      Update  qdisc  if it already exists, otherwise attempting to add a qdisc which already exists will result in an error. This does not
	      include changing the type of the qdisc, use --replace if you wish to do so.

       --replace
	      Replace or update qdisc if it already exists. Same behaviour as --update but will completely replace the qdisc if it exists already.

       --update-only
	      Update an existing qdisc but do not create it if it does not exist.

       --replace-only
	      Update or replace an existing qdisc but do not create it if it does exist.

   nl-qdisc-delete Options
       --interactive
	      The interactive mode requires confirmation by the user for each qdisc deleted. It will print a prompt for each  qdisc  matching  the
	      provided filter and requires the user to answer 'y'es or 'n'o.

       --yes  Make the default answer for interactive prompts be 'y'es. This option is also required to delete all qdiscs on all network devices.

       -k or --kind=TYPE
	      Only delete qdiscs of this type.

   nl-qdisc-list Options
       --details
	      Show detailed information for each qdisc listed.

       --stats
	      Show statistics information for each qdisc listed. This option will also turn on detailed information automatically.

       -r or --recursive
	      List all TC objects recurisvely attached to all qdiscs matching the filter.

       -k or --kind=TYPE
	      Only list qdiscs of this type.

USAGE

       Add a HTB root qdisc with id "5:":

	      nl-qdisc-add --dev eth0 --parent root --id 5: htb

       List all qdiscs on eth0 and print statistical data:

	      nl-qdisc-list --stats --dev eth0

       Delete the qdisc "5:":
	      nl-qdisc-delete --id 5:

SEE ALSO

       nl-classid-lookup(8)

AUTHOR

       Thomas Graf is the original author and current maintainer of libnl and libnl tools. Many people have contributed to it since.

libnl								  21 October 2010						       nl-qdisc(8)

Check Out this Related Man Page

PFIFO_FAST(8)                                                          Linux                                                         PFIFO_FAST(8)

NAME

       pfifo_fast - three-band first in, first out queue

DESCRIPTION

       pfifo_fast is the default qdisc of each interface.

       Whenever  an  interface  is  created,  the pfifo_fast qdisc is automatically used as a queue. If another qdisc is attached, it preempts the
       default pfifo_fast, which automatically returns to function when an existing qdisc is detached.

       In this sense this qdisc is magic, and unlike other qdiscs.

ALGORITHM

       The algorithm is very similar to that of the classful tc-prio(8) qdisc.  pfifo_fast is like three tc-pfifo(8) queues side  by  side,  where
       packets can be enqueued in any of the three bands based on their Type of Service bits or assigned priority.

       Not all three bands are dequeued simultaneously - as long as lower bands have traffic, higher bands are never dequeued. This can be used to
       prioritize interactive traffic or penalize 'lowest cost' traffic.

       Each band can be txqueuelen packets long, as configured with ifconfig(8) or ip(8).  Additional packets coming in are not enqueued  but  are
       instead dropped.

       See tc-prio(8) for complete details on how TOS bits are translated into bands.

PARAMETERS

       txqueuelen
              The length of the three bands depends on the interface txqueuelen, as specified with ifconfig(8) or ip(8).

BUGS

       Does  not  maintain statistics and does not show up in tc qdisc ls. This is because it is the automatic default in the absence of a config-
       ured qdisc.

SEE ALSO

       tc(8)

AUTHORS

       Alexey N. Kuznetsov, <kuznet@ms2.inr.ac.ru>

       This manpage maintained by bert hubert <ahu@ds9a.nl>

iproute2                                                          10 January 2002                                                    PFIFO_FAST(8)
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