<div><BR>I have a lot question about tc-command because now i'm doing research to compare performance between HTB and <BR>HFSC so i'm doubt a lot thing and your reply are so very helpful me ... my question is </div> <div><BR>1. I'm use opensource (Mastershaper) for help to config traffic control but when i'm try to config HTB,<BR>I'm doubt about in each chain must identify fallback service level and If i'm don't specify it,it will<BR>unable to contain pipe. Every traffic and if traffic not matched in chain's pipe can only use the fallback<BR>service level</div> <div>Is it only true definition in HTB tc command?? or it's only a creative function from developer??</div> <div>ps. in Mastershaper represent interior class as pipe and leaf class as chain </div> <div>In HFSC tc command </div> <div>fter i read HFSC paper , i'm doubt in Service curve declaration like this</div> <div>> | SC := [ [ m1 BPS ] [ d SEC ] m2 BPS<BR>> | <BR>> | m1 : slope of first
segment -> umax<BR>> | d : x-coordinate of intersection -> dmax<BR>> | m2 : slope of second segment -> rate</div> <div> </div> <div>2. In all leaf class must specify rt (realtime service curve) ??? and Is it important to specify<BR>sc (Service curve) in all leaf class ?? and in all leaf class must specify link-sharing (ls) too??<BR> because i think after read HFSC theory about by default All leaf class(Service class)<BR>will use Link-sharing critirion for allocation bandwidth from Service curve (My assumtion think this <BR>calculation bandwidth is "m1" or "umax" ->total bandwidth that can send at ceil rate??) and when total <BR>delay are exceed to "demax" or "d" -> it mean it time for HFSC to manage QoS to guarantee bandwidth and delay<BR>in each leaf class by use Real-time Criterion so bandwidth rate will change to "m2" or bandwidth rate<BR>that guarantee QoS in eache leaf class<BR> Is it true??? i fear may be
misunderstand in HFSC theory,<BR>example in my test lab ,i have leaf class 3 type such real-time ,data ,default<BR>Can i specify <BR> - real-time leaf class -> rt (for guatantee delay and bw) ,ls (by default when not exceed max delay)<BR> - data lead class -> ls (by default and not delay sensitive so delay are not important)</div> <div><BR>3. I'm doubt in How to declaration ls, and ul about .. in thoery it a type of service curve that not<BR>relative with real-criterion, so Delay may be not important for consider ???? <BR>Is it true when declaration, parameter in each service curve may be link this?<BR> ls [ umax BPS, rate BPS]<BR> ul [ umax BPS, rate BPS]<BR> and Is it important to declaration all of three parameter (umax,demax,rate) If three parameter<BR>are important to setting traffic control????</div> <div> </div> <div>4. I'm try to search HFSC command example, it have a lot case but i'm doubt in service curve (sc)
declaration<BR>sometime declaration in root class, interior class, in leaf class<BR> so I'm not sure to understand about ls ->calculate bandwidth for interior class,root class and <BR>rt -> calculate bandwidth for leaf class and what about service curve(sc)??? it's specify only in root class???</div> <div> </div> <div>5. Is it true?? <BR>In root class, or interior class will doing with only Link-sharing criterion, so can specify declaration<BR>only link-sharing ->ls(umax, dmax, rate) and Upperlimit ->ls(umanx,dmax,rate) it's not important to <BR>declaration real-time curve (rt) because in HFSC theory will use real-time criterion only Leaf class</div> <div> </div> <div>6. In HFSC, upper limit are bandwidth rate that guarantee maximum bandwidth rate in each class as ceil in <BR>HTB???</div> <div>6. I'm doubt about priority in HFSC, in HFSC paper telling about in support priority but in HFSC tc-command<BR>it not specify priority in each
class, So In HFSC how to manage priority class link HTB????</div> <div><BR>Thank you for all reply, it's so very helpful to me alot.<BR>which all will suggest or advise me about in something i'm misunderstand </div> <div>raku</div> <div> </div><p> 
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