* [LARTC] TBF question
@ 2001-05-14 6:07 Gery Kahn
2001-05-17 7:46 ` Stef Coene
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Gery Kahn @ 2001-05-14 6:07 UTC (permalink / raw)
To: lartc
Who can explain parameter buffer and limit in TBF
tc qdisc add dev eth1 parent 20:1 tbf rate 2Mbit buffer 30Kb/8 limit 15Kb
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [LARTC] TBF question 2001-05-14 6:07 [LARTC] TBF question Gery Kahn @ 2001-05-17 7:46 ` Stef Coene 2001-05-17 7:46 ` Stef Coene 2001-05-17 13:46 ` Kurt Wagner 2 siblings, 0 replies; 4+ messages in thread From: Stef Coene @ 2001-05-17 7:46 UTC (permalink / raw) To: lartc TBF uses internal 2 TBF control mechanism. One for the short burst and one for a long time control. I think that buffer and limit contols ths short burst and rate the long time traffic control. I putted it on my TODO list to test it out. Gery Kahn wrote: > > Who can explain parameter buffer and limit in TBF > > tc qdisc add dev eth1 parent 20:1 tbf rate 2Mbit buffer 30Kb/8 limit 15Kb > > _______________________________________________ > LARTC mailing list / LARTC@mailman.ds9a.nl > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/2.4Routing/ -- Stef More QOS info : http://users.belgacom.net/staf/ _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/2.4Routing/ ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [LARTC] TBF question 2001-05-14 6:07 [LARTC] TBF question Gery Kahn 2001-05-17 7:46 ` Stef Coene @ 2001-05-17 7:46 ` Stef Coene 2001-05-17 13:46 ` Kurt Wagner 2 siblings, 0 replies; 4+ messages in thread From: Stef Coene @ 2001-05-17 7:46 UTC (permalink / raw) To: lartc TBF uses internal 2 TBF control mechanism. One for the short burst and one for a long time control. I think that buffer and limit contols ths short burst and rate the long time traffic control. I putted it on my TODO list to test it out. Gery Kahn wrote: > > Who can explain parameter buffer and limit in TBF > > tc qdisc add dev eth1 parent 20:1 tbf rate 2Mbit buffer 30Kb/8 limit 15Kb > > _______________________________________________ > LARTC mailing list / LARTC@mailman.ds9a.nl > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/2.4Routing/ -- Stef More QOS info : http://users.belgacom.net/staf/ _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/2.4Routing/ ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [LARTC] TBF question 2001-05-14 6:07 [LARTC] TBF question Gery Kahn 2001-05-17 7:46 ` Stef Coene 2001-05-17 7:46 ` Stef Coene @ 2001-05-17 13:46 ` Kurt Wagner 2 siblings, 0 replies; 4+ messages in thread From: Kurt Wagner @ 2001-05-17 13:46 UTC (permalink / raw) To: lartc hi, > TBF uses internal 2 TBF control mechanism. One for the short burst and > one for a long time control. I think that buffer and limit contols ths > short burst and rate the long time traffic control. I putted it on my > TODO list to test it out. limit is the sum of the bucket size (=burst) and the size of the queue. So we police the traffic if limit is the same as burst (queue size is zero), and we shape if limit is larger than burst (queue size larger zero). rate/burst for the longtime controll, peakrate/mtu for the shorter timescale (only if you need a upper bound), limit to decide about the queue lenght. For more details look at... http://www.cosy.sbg.ac.at/~kwagner/tbf02_kw.ps That's how I understand TBF. Correct me if I got it wrong. Kurt _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/2.4Routing/ ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2001-05-17 13:46 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2001-05-14 6:07 [LARTC] TBF question Gery Kahn 2001-05-17 7:46 ` Stef Coene 2001-05-17 7:46 ` Stef Coene 2001-05-17 13:46 ` Kurt Wagner
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