Re: [LARTC] AF

Linux Advanced Routing and Traffic Control

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Hi uergen,

In the iproute2 distro there is a file named "Config" with the following options in it:
TC_CONFIG_DIFFSERV=n
TC_CONFIG_ATM=n

Set the TC_CONFIG_DIFFSERV to y then compile tc again. Should work then.

Cheers,

Rodrigo

On Mon, May 14, 2001 at 02:43:41PM +0800, Juergen wrote:
> Sorry, I want to do your test but something wrong!!!!!!
> tc qdisc add dev eth1 handle 1:0 root dsmark indices 64 set_tc_index
> 
> 
> [root@xxxxxxxx linux-2.4]# tc qdisc add dev eth1 handle 1:0 root dsmark
> indices 64 set_tc_index
> Unknown qdisc "dsmark", hence option "indices" is unparsable
> 
> My kernel is 2.4.2 and iproute is 2.2.4-10
> I have checked my kernel, and it support  field marker.
> <M>   Diffserv field marker
> 
> Please give me some advice...
> thx...
> 
> > # --- General setup  ---
> > tc qdisc add dev eth1 handle 1:0 root dsmark indices 64 set_tc_index
> > tc filter add dev eth1 parent 1:0 protocol ip prio 1 tcindex mask 0xfc
> shift
> > 2 pass_on
> > tc qdisc add dev eth1 parent 1:0 handle 2:0 cbq bandwidth 10Mbit cell 8
> > avpkt 1000 mpu 64
> > tc filter add dev eth1 parent 2:0 protocol ip prio 1 tcindex mask 0xf0
> shift
> > 4 pass_on
> >
> > # --- AF Class 1 specific setup---
> > tc class add dev eth1 parent 2:0 classid 2:1 cbq bandwidth 10Mbit rate
> 2Mbit
> > avpkt 1000 prio 1 bounded allot 1514 weight 1 maxburst 21
> > tc filter add dev eth1 parent 2:0 protocol ip prio 1 handle 1 tcindex
> > classid 2:1
> > tc qdisc add dev eth1 parent 2:1 gred setup DPs 3 default 2
> >
> > # --- AF Class 1 DP 1---
> > tc filter add dev eth1 parent 1:0 protocol ip prio 1 handle 10 tcindex
> > classid 1:111
> > tc qdisc change dev eth1 parent 2:1 gred limit 60KB min 15KB max 45KB
> burst
> > 20 avpkt 1000 bandwidth 10Mbit DP 1 \
> > probability 0.02 prio 2
> >
> > # --- AF Class 1 DP 2---
> > tc filter add dev eth1 parent 1:0 protocol ip prio 1 handle 12 tcindex
> > classid 1:112
> > tc qdisc change dev eth1 parent 2:1 gred limit 60KB min 15KB max 45KB
> burst
> > 20 avpkt 1000 bandwidth 10Mbit DP 2 \
> > probability 0.04 prio 3
> >
> > # --- AF Class 1 DP 3---
> > tc filter add dev eth1 parent 1:0 protocol ip prio 1 handle 14 tcindex
> > classid 1:113
> > tc qdisc change dev eth1 parent 2:1 gred limit 60KB min 15KB max 45KB
> burst
> > 20 avpkt 1000 bandwidth 10Mbit DP 3 \
> > probability 0.06 prio 4
> >
> > #------BE Queue setup------
> > tc filter add dev eth1 parent 1:0 protocol ip prio 2 handle 0 tcindex mask
> 0
> > classid 1:1
> > tc class add dev eth1 parent 2:0 classid 2:5 cbq bandwidth 100Mbit rate
> > 2Mbit avpkt 1000 prio 8 bounded allot 1514 weight 1 maxburst 21
> > tc filter add dev eth1 parent 2:0 protocol ip prio 1 handle 0 tcindex
> > classid 2:5
> > tc qdisc add dev eth1 parent 2:5 red limit 60KB min 15KB max 45KB burst 20
> > avpkt 1000 bandwidth 10Mbit probability 0.4
> >
> > ##########################
> > Here are part of what i get when i "tc -s qdisc":
> > qdisc red 8005: dev eth1 limit 60Kb min 15Kb max 45Kb
> > Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
> >   marked 0 early 0qdisc gred 8001: dev eth1
> > DP:1 (prio 8) Average Queue 0b Measured Queue 0b
> > Packet drops: 0 (forced 0 early 0)
> > Packet totals: 0 (bytes 0)  ewma 3 Plog 21 Scell_log 9
> > DP:2 (prio 8) Average Queue 0b Measured Queue 0b
> > Packet drops: 0 (forced 0 early 0)
> > Packet totals: 0 (bytes 0)  ewma 3 Plog 20 Scell_log 9
> > DP:3 (prio 8) Average Queue 0b Measured Queue 0b
> > Packet drops: 0 (forced 0 early 0)
> > Packet totals: 0 (bytes 0)  ewma 3 Plog 19 Scell_log 9
> > Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
> >
> > qdisc cbq 2: dev eth1 rate 10Mbit (bounded,isolated) prio no-transmit
> > Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
> >   borrowed 0 overactions 0 avgidle 624 undertime 0
> >
> > qdisc dsmark 1: dev eth1 indices 0x0040 set_tc_index
> > Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
> > pdrop 0 other 0
> >
> > #####################
> >
> > my question is why is the prio shown is always 8, although i set them to
> > prio 2,3,4 respectively? And i suspect because of this, i actually get
> > better performance for BE (in terms of lower delay).
> >
> > Also, i would like to clarify some requirement for af as proosed in RFC.
> In
> > "Appendix: Example services" of RFC 2597, it said that AF1x should have
> > "greater probability for timely forwarding by having lighter load".
> > Therefore, i send lighter traffic to class 1, than class 2 and 3. But
> still
> > i get lower delay for class BE, and no observable difference in delay for
> > class 1, 2 and 3 (maybe it is the prio 8 problem as described above).
> >
> > What do you guys think about the delay for AF as proposed in RFC? Should
> AF
> > class 1 has the smallest delay compared to class 2,3 4 and BE?
> >
> > Last question, what do we do with excess AF traffic? Do we drop it or
> > downgrade it to BE?
> >
> > If you have read to this part, i must thank you for your patience.
> >
> >
> >
> >
> > _________________________________________________________________________
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> >
> >
> > _______________________________________________
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> http://ds9a.nl/2.4Routing/
> >
> 
> 
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