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Route classifier in tc

Section: Linux (8)
Updated: 21 Oct 2015
Index Return to Main Contents

 

NAME

route - route traffic control filter  

SYNOPSIS


tc filter ... route [ from REALM | fromif TAG ] [ to REALM ] [ classid CLASSID ] [ action ACTION_SPEC ]  

DESCRIPTION

Match packets based on routing table entries. This filter centers around the possibility to assign a realm to routing table entries. For any packet to be classified by this filter, a routing table lookup is performed and the returned realm is used to decide on whether the packet is a match or not.  

OPTIONS

action ACTION_SPEC
Apply an action from the generic actions framework on matching packets.
classid CLASSID
Push matching packets into the class identified by CLASSID.
from REALM
fromif TAG Perform source route lookups. TAG is the name of an interface which must be present on the system at the time of tc invocation.
to REALM
Match if normal (i.e., destination) routing returns the given REALM.
 

EXAMPLES

Consider the subnet 192.168.2.0/24 being attached to eth0:

ip route add 192.168.2.0/24 dev eth0 realm 2

The following route filter will then match packets from that subnet:

tc filter add ... route from 2 classid 1:2

and pass packets on to class 1:2.  

NOTES

Due to implementation details, realm values must be in a range from 0 to 255, inclusive. Alternatively, a verbose name defined in /etc/iproute2/rt_realms may be given instead.  

SEE ALSO

tc(8), ip-route(8)


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLES
NOTES
SEE ALSO





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