Nl-qdisc-add (8) Linux Manual Page

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]

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

-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 special values "root" or "ingress".
-i or –id=ID: Identifier of qdisc. It can be specified as classid or name.

–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.

–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.

–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.

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:

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