nl−qdisc - Online Linux Manual PageSection : 8
Updated : 21 October 2010
Source : libnl

NAMEnl−qdisc−{add|list|delete} - Manage queueing disciplines

SYNOPSISnl−qdisc−add −−dev dev −−parent id [OPTIONS] qdisc-type [QDISC] nl−qdisc−delete [ −−interactive ] [OPTIONS] nl−qdisc−list [OPTIONS]

DESCRIPTIONThe 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 special 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.

USAGEAdd 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 ALSOnl−classid−lookup(8)

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