Re: packet shaping bridge

Linux Advanced Routing and Traffic Control

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Jason Bath wrote:

I'm currently tweaking but this is what I have for now:
-----------------------
#!/bin/sh

DEV=eth0
#setup the root

#tc qdisc add dev $DEV root handle 1: htb default 11

Remember arp traffic will go to default unless you filter elsewhere.

tc class add dev $DEV parent 1: classid 1:1 htb rate 100kbps ceil 100kbps
#Tokyo class
tc class add dev $DEV parent 1:1 classid 1:10 htb rate 50kbps ceil 100kbps

I would use rate 90 ceil 100 prio 0

#Everything else
tc class add dev $DEV parent 1:1 classid 1:11 htb rate 50kbps ceil 100kbps

rate 10 ceil 100 prio 1 quantum 1500 (or your mtu) burst 10b cburst 10b


#filter for streaming
tc filter add dev $DEV parent 1:1 protocol ip prio 0 u32 match ip src 10.2.1.7 match ip dport 2001 0xffff flowid 1:10

Filters don't work as you need to add them to 1:0 also prio 0 is not highest for a filter - use 1


tc filter add dev $DEV protocol ip parent 1:1 prio 0 u32 match ip src 10.2.1.5 match ip dport 2001 0xffff flowid 1:10

#filter for my workstation
tc filter add dev $DEV protocol ip parent 1:1 prio 3 u32 match ip src 10.2.1.251 flowid 1:10

If your workstation generates bulk traffic don't put it with stream - make another class.



#all other traffic sent to the other queue
tc filter add dev $DEV protocol ip parent 1:1 prio 3 u32 match ip src 0.0.0.0/0 flowid 1:11

Not really needed if you use default 11 but remember arp - if you omit default 11 then leave this and arp will pass unshaped.



tc qdisc add dev $DEV parent 1:10 handle 10: pfifo limit 2

two packets seems a bit low - maybe use a short bfifo to limit to a couple big packets (3k) but still allow more small.


tc qdisc add dev $DEV parent 1:11 handle 11: sfq perturb 2

perturb causes packet reordering 2 is too low use min 10 or higher.

Andy.
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