Using Variables for Bandwidth control Post: 302237982

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Top Forums UNIX for Dummies Questions & Answers Using Variables for Bandwidth control Post 302237982 by Smiling Dragon on Thursday 18th of September 2008 09:33:10 PM

09-18-2008

Registered User

Unfortunately, that's a bit of a difficult requirment to understand...
You've listed that the example of Bandwidth CIR Upload and Bandwidth PIR Upload is 5kb/s and 16kb/s but the example code seems to show 11 and 32 instead.

What I suggest you do is to list all the variables you need the script to automatically pick, give them names that will be clear to the reader but are still valid names (for example, I would call a variable that contains the Bandwidth CIR Upload "bandwidthCIRUpload").

Then change the places in your script where the variables need ot be used to the variable name preceded by a $ symbol and surrounded by {}.
eg, if your script has a line:

Code:

${TC} class add dev eth1 parent 1:1 classid 1:30 htb rate 32kbit ceil 96kbit

and you want to have the '1:1', '32', and '64' be calculated automatically, change it to:

Code:

${TC} class add dev eth1 parent ${parent} classid 1:30 htb rate ${bandwidthCIRDownload}kbit ceil ${bandwidthPIRDownload}kbit

Once you have that done, report back here with your modified code and your list of variables.
Make sure to surround your code in [ C O D E ] tags so it is easier to read.
eg
[ C O D E ]
my code here
[ / C O D E ]

Smiling Dragon

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tc-matchall

Match-all classifier in tc(8)                                          Linux                                         Match-all classifier in tc(8)

NAME

       matchall - traffic control filter that matches every packet

SYNOPSIS

       tc filter ... matchall [ skip_sw | skip_hw  ] [ action ACTION_SPEC ] [ classid CLASSID ]

DESCRIPTION

       The matchall filter allows to classify every packet that flows on the port and run a action on it.

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.

       skip_sw
              Do  not  process filter by software. If hardware has no offload support for this filter, or TC offload is not enabled for the inter-
              face, operation will fail.

       skip_hw
              Do not process filter by hardware.

EXAMPLES

       To create ingress mirroring from port eth1 to port eth2:

              tc qdisc  add dev eth1 handle ffff: ingress
              tc filter add dev eth1 parent ffff:           
                      matchall skip_sw                      
                      action mirred egress mirror           
                      dev eth2

       The first command creats an ingress qdisc with handle ffff: on device eth1 where the second command attaches a matchall filters on it  that
       mirrors the packets to device eth2.

       To create egress mirroring from port eth1 to port eth2:

              tc qdisc add dev eth1 handle 1: root prio
              tc filter add dev eth1 parent 1:               
                      matchall skip_sw                       
                      action mirred egress mirror            
                      dev eth2

       The  first  command  creats  an egress qdisc with handle 1: that replaces the root qdisc on device eth1 where the second command attaches a
       matchall filters on it that mirrors the packets to device eth2.

       To sample one of every 100 packets flowing into interface eth0 to psample group 12:

              tc qdisc add dev eth0 handle ffff: ingress
              tc filter add dev eth0 parent ffff: matchall 
                   action sample rate 100 group 12

SEE ALSO

       tc(8),

iproute2                                                            21 Oct 2015                                      Match-all classifier in tc(8)

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