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
