Re: [LARTC] HTB and GRED

[Martin Devera <devik@cdi.cz>]

use latest HTB patch .. it is FAQ :)

On Tue, 22 Jan 2002, [X-UNKNOWN] Øystein Løkås; NTNU; H01 wrote:

> Hi all.
> 
> I am trying to implement diffserv on a router running linux using HTB. I
> am not getting it to work!
> My problem appears when I try to implement the AF classes. I am not able
> to do the mapping from DSCP to GRED's DPs.
> I have found some scripts implementing AF, but these use CBQ, and I want
> to use HTB. I have tried to copy some scripts that works with CBQ and
> "translate" them into HTB, but tc will not accept to assign a tcindex
> filter to a HTB qdisc. I get a RTNETLINK error message, sying "no such
> file or directory".
> I do not quite understand the automatic creation of classes done by
> tcindex.
> Could anyone enlighten me?
> 
> My script with one AF class is as follows:
> 
> #Path:
> TC=/home/oystelok/iproute2/tc/tc
> $TC qdisc del dev eth0 root
> 
> #dsmark as root qdisc:
> $TC qdisc add dev eth0 root handle 1:0 dsmark indices 64 set_tc_index 
> $TC filter add dev eth0  parent 1:0 protocol ip prio 1 tcindex mask 0xfc
> shift 2 pass_on
> 
> #Uses htb for link sharing
> $TC qdisc add dev eth0 parent 1:0 handle 2:0 htb default 23
> 
> #Root class for htb, to make all the bandwidth available to AF and BE:
> $TC class add dev eth0 parent 2:0 classid 2:1 htb rate 10Mbit burst 10kbit
> cburst 1000
> 
> #EF class
> $TC class add dev eth0 parent 2:1 classid 2:11 htb rate 5Mbit burst 5kbit
> cburst 1000 
> 
> #Class for  AFxx and BE
> $TC class add dev eth0 parent 2:1 classid 2:12 htb rate 5Mbit ceil 10Mbit
> burst 5kbit cburst 1000 prio 1
> 
> #Class for AF1x
> $TC class add dev eth0 parent 2:12 classid 2:21 htb rate 2Mbit ceil 10Mbit
> burst 2kbit cburst 1000 prio 1
> #Class for BE
> $TC class add dev eth0 parent 2:12 classid 2:23 htb rate 1Mbit ceil 10Mbit
> burst 2kbit cburst 1000 prio 2
> 
> #----Trying to configure GRED, does not succeed!!!-----
> #Qdisc for AF1x
> $TC qdisc add dev eth0 parent 2:21 handle 3:0 gred setup DPs 3 default 1
> 
> #Setup for AF11
> $TC filter add dev eth0 parent 1:0 protocol ip  prio 2 handle 10 tcindex
> classid 1:111
> $TC qdisc change dev eth0 parent 2:21 gred min 8kbit max 10kbit burst 2
> limit 200kbit avpkt 1000 probability 0.001 DP 1
> 
> #Setup for AF12
> $TC filter add dev eth0 parent 1:0 protocol ip  prio 2 handle 12 tcindex
> classid 1:112
> $TC qdisc change dev eth0 parent 2:21 gred min 8kbit max 10kbit burst 2
> limit 200kbit avpkt 1000 probability 0.001 DP 2
> 
> #Setup for AF13
> $TC filter add dev eth0 parent 1:0 protocol ip  prio 2 handle 14 tcindex
> classid 1:113
> $TC qdisc change dev eth0 parent 2:21 gred min 8kbit max 10kbit burst 2
> limit 200kbit avpkt 1000 probability 1.0 DP 3
> 
> #Qdisc for BE
> $TC qdisc add dev eth0 parent 2:23 handle 5:0 red min 12kbit max 25kbit
> burst 20 limit 200kbit avpkt 1000 bandwidth 10Mbit
> 
> #Filter for EF:
> $TC filter add dev eth0 parent 2:0 protocol ip u32 match ip tos 0xb8 0xff
> flowid 2:11
> #Filter for AF1x:
> $TC filter add dev eth0 parent 2:0 protocol ip u32 match ip tos 0x20 0xe0
> flowid 2:21
> #Filter for BE:
> $TC filter add dev eth0 parent 2:0 protocol ip u32 match ip tos 0x00 0xff
> flowid 2:23
> 
> 
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> 

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