[LARTC] load balancing fails

Linux Advanced Routing and Traffic Control

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Hi, I am trying to loadbalance our system to an upstream limit of 128Kbit, where each connected machine (there are 6 of them) is limited to 21Kbit upstream. Each time I enter the commands, it seems that nothing happens, this is the output for tc -d -s qdisc, applied for one machine:

qdisc sfq 8001: dev eth1 quantum 1514b limit 128p flows 128/1024 perturb 15sec
Sent 0 bytes 0 pkts (dropped 0, overlimits 0) <== shouldn't here be some packets??


qdisc cbq 10: dev eth1 rate 128Kbit cell 8b (bounded,isolated) prio no-transmit/8 weight 128Kbit allot 1514b
level 2 ewma 5 avpkt 1000b maxidle 1906us
Sent 72299 bytes 1310 pkts (dropped 0, overlimits 0)
borrowed 0 overactions 0 avgidle 49999 undertime 0


Our configuration is as follows:

eth0: internal interface, local network adresses 192.168.0.1-192.168.0.10
eth1: internet interface

I tried to limit the upstream both at eth0 and eth1, but I am quite confused now that they both don't work.
The commands entered for eth1 are:


tc qdisc add dev eth1 root handle 10: cbq bandwidth 128Kbit avpkt 1000
tc class add dev eth1 parent 10:0 classid 10:1 cbq bandwidth 128Kbit rate 128Kbit allot 1514 weight 12Kbit prio 8 maxburst 20 avpkt 1000
tc class add dev eth1 parent 10:1 classid 10:100 cbq bandwidth 128Kbit rate 21Kbit allot 1514 weight 2Kbit prio 5 maxburst 20 avpkt 1000 bounded
tc qdisc add dev eth1 parent 10:100 sfq quantum 1514b perturb 15
tc filter add dev eth1 parent 10:0 protocol ip prio 100 u32 match ip src 192.168.0.1 flowid 10:100


For eth0 I tried practically the same, also with src 192.168.0.1
I compiled the kernel with all qos-options enabled (except the broken code).

I hope I have given enough information for someone to do something with ;)

Thanks in advance,

Sander Raaijmakers




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