[LARTC] Need Suggestion on CBQ Rules.

[Raghuveer K <rvk@gsecone.com>]

Stef Coene wrote:

>On Tuesday 23 September 2003 07:56, Raghuveer wrote:
>  
>
>>Here are the rules Iam applying to control outgoing traffic at WAN(eth0)
>>interface for public hosted services.
>>Here actual Isp rate = 512Kbit, rate taken = 97% of 512Kbit, eth0 ip is
>>192.168.1.2
>>
>>tc qdisc add dev eth0 root handle 1: cbq bandwidth 100Mbit avpkt 1000 cell
>>8 tc class add dev eth0 parent 1:0 classid 1:1 cbq bandwidth 100Mbit rate
>>497Kbit weight 49Kbit prio 3 allot 1514 cell 8 maxburst 10  avpkt 1000
>>bounded
>>/* Hosted http server bandwidth = 64Kbit */
>>tc class add dev eth0 parent 1:1 classid 1:2 cbq bandwidth 100Mbit rate
>>64Kbit weight 6Kbit prio 3 allot 1514 cell 8 maxburst 10  avpkt 1000
>>tc filter add dev eth0 parent 1:1 protocol ip prio 3 u32 match ip src
>>192.168.1.2 match ip sport 80 0xffff classid 1:2
>>
>>/* Hosted ftp server bandwidth = 64Kbit */
>>tc class add dev eth0 parent 1:1 classid 1:3 cbq bandwidth 100Mbit rate
>>64Kbit weight 6Kbit prio 3 allot 1514 cell 8 maxburst 10  avpkt 1000
>>tc filter add dev eth0 parent 1:1 protocol ip prio 3 u32 match ip src
>>192.168.1.2 match ip sport 21 0xffff classid 1:3
>>
>>/* Default : Rest/Other traffic */
>>tc class add dev eth0 parent 1:1 classid 1:4 cbq bandwidth 100Mbit rate
>>369Kbit weight 40Kbit prio 3 allot 1514 cell 8 maxburst 10  avpkt 1000
>>/* Here I want replace the below rule with a simple rule based only on
>>port i.e by using some default port other than 80, 21 as sport, which
>>according to your last mail is not possible, hence pls check whether the
>>below rule will do for remaining traffic */
>>tc filter add dev eth0 parent 1:1 protocol ip prio 3 u32 match ip src
>>0/0 match ip dst 0/0 classid 1:4
>>
>>Pls let me know whether the above rules are framed correctly or can be
>>done in a better way.
>>    
>>
>I can't do it better then you did :)
>  
>
Stef,
Traffic Control is not taking place after applying the above rules. Here 
follows the test setup:-
1. The linux m/c 's eth0(100Mbits, WAN) is connected to 128 Kbits ADSL 
and eth1 to the LAN.
2.  I tried doing traffic control for incoming(at eth1) and outgoing(at 
eth0) traffic using CBQ(above rules).
3.  In LAN, I connected 3 m/c's(all linux).
4.  The ISP rate  taken is 97% of 128Kbits.
5.  Bandwidth Monitoring is done by using IPTraf on each LAN m/c's.

I have few observations and queries, as follows:--
1. Here the ISP rate is fluctuating in the range of 21Kbits to 131 Kbits 
for 128Kbits ADSL.
2. I have not added any filter for the parent class. Is it required...? 
What happens if I add...?
3. Is "iptraf " tool OK for monitoring the distribution of bandwidth on 
each LAN m/c.
4. Whether shall I take outgoing and incoming ISP rate's in 30:70 ratio, 
i.e 30% if 128Kbits for outgoing Qdisc(eth0) and 70% for incoming
    Qdisc(eth1). As 128 Kbits rate being asyncronous(ADSL).

Can you pls guide me where amI going wrong..?

Regards
-Raghu

>Stef
>
>  
>


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