Equal bandwidth sharing by all hosts using dummynet
eculp at encontacto.net
eculp at encontacto.net
Wed Oct 22 02:56:39 PDT 2003
Quoting Alhagie Puye <alhagiep at yahoo.com>:
| Hi all,
|
| First of all, I have spent a lot of time reading up on
| it.
|
| Anyway, I live in a shared accomodation with 2
| roommates and a landlord and we share a cable internet
| connection. It is 2Mbit/400Kbit connection. Sometimes
| when one of us is downloading a song through Kazaa or
| a new Linux or FreeBSD iso, the bandwidth gets hogged
| and other users can't get through.
|
| I was trying to configure dummynet using Fair Queues
| but I seem to be missing something. I tried to modify
| some of the examples on Luigi Rizzo's web site
| (http://info.iet.unipi.it/~luigi/ip_dummynet/) but it
| doesn't seem to be working.
|
| It is a very simple setup.
|
| Private network (192.168.42.0/24)--------> FreeBSD 5.1
| firewall doing NAT (DHCP on external interface)
|
| My configuration file excerpt:
|
| ipfw pipe 1 config bw 400Kbit/s
| ipfw pipe 2 config bw 1000Kbit/s
| ipfw add queue 1 ip from 192.168.42.0/24 to any via
| fxp0
| ipfw queue 1 config weight 5 pipe 1 mask src-ip
| 0xffffffff
|
| ipfw add queue 2 ip from any to 192.168.42.0/24 via
| fxp0
| ipfw queue 2 config weight 5 pipe 2 mask dst-ip
| 0xfffffff
I use the following and it seems to work. I haven't really looked
that close though. It's a bit different to what you are doing but
maybe it will help somehow. This company has some real BW hogs that
is the reason for the 16kb :)
$fwcmd pipe 1 config mask src-ip 0x000000ff bw 16Kbit/s queue 16Kbytes
$fwcmd pipe 2 config mask dst-ip 0x000000ff bw 16Kbit/s queue 16Kbytes
$fwcmd add 451 pipe 1 all from 192.168.5.0/24 to any out
$fwcmd add 452 pipe 2 all from any to 192.168.5.0/24 in
My ip pipe show is:
/var/tmp # ipfw pipe show
00001: 16.000 Kbit/s 0 ms 16 KB 29 queues (64 buckets) droptail
mask: 0x00 0x000000ff/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
0 ip 0.0.0.32/0 0.0.0.0/0 89 5275 0 0 0
2 ip 0.0.0.1/0 0.0.0.0/0 8389 593271 0 0 0
4 ip 0.0.0.34/0 0.0.0.0/0 39 1996 0 0 0
6 ip 0.0.0.35/0 0.0.0.0/0 188 9738 0 0 0
8 ip 0.0.0.36/0 0.0.0.0/0 223 11346 0 0 0
10 ip 0.0.0.37/0 0.0.0.0/0 342 17135 0 0 0
12 ip 0.0.0.38/0 0.0.0.0/0 92 5474 0 0 0
14 ip 0.0.0.39/0 0.0.0.0/0 194 9634 0 0 0
16 ip 0.0.0.40/0 0.0.0.0/0 225 10922 0 0 0
18 ip 0.0.0.41/0 0.0.0.0/0 186 9350 0 0 0
20 ip 0.0.0.42/0 0.0.0.0/0 122 6148 0 0 0
22 ip 0.0.0.43/0 0.0.0.0/0 269 13420 0 0 0
24 ip 0.0.0.44/0 0.0.0.0/0 105 6612 0 0 0
26 ip 0.0.0.45/0 0.0.0.0/0 4 192 0 0 0
28 ip 0.0.0.46/0 0.0.0.0/0 294 14751 0 0 0
30 ip 0.0.0.47/0 0.0.0.0/0 229 13595 0 0 0
32 ip 0.0.0.48/0 0.0.0.0/0 198 9504 0 0 0
34 ip 0.0.0.49/0 0.0.0.0/0 10833 513435 0 0 0
36 ip 0.0.0.50/0 0.0.0.0/0 218 11286 0 0 0
38 ip 0.0.0.51/0 0.0.0.0/0 30 1541 0 0 0
40 ip 0.0.0.52/0 0.0.0.0/0 1131 59118 0 0 0
42 ip 0.0.0.53/0 0.0.0.0/0 1059 58867 0 0 0
44 ip 0.0.0.54/0 0.0.0.0/0 55 2700 0 0 0
52 ip 0.0.0.26/0 0.0.0.0/0 100 4800 0 0 0
54 ip 0.0.0.27/0 0.0.0.0/0 10561 514357 0 0 0
56 ip 0.0.0.28/0 0.0.0.0/0 41 2669 0 0 0
58 ip 0.0.0.29/0 0.0.0.0/0 5838 277480 0 0 0
60 ip 0.0.0.30/0 0.0.0.0/0 172 8980 0 0 0
62 ip 0.0.0.31/0 0.0.0.0/0 8 512 0 0 0
00002: 16.000 Kbit/s 0 ms 16 KB 1 queues (64 buckets) droptail
mask: 0x00 0x00000000/0x0000 -> 0x000000ff/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
1 ip 0.0.0.0/0 0.0.0.1/0 97482 15485004 0 0 0
So I assume it is doing what I expect or could I be missing something?
ed
|
| When I do a "ipfw pipe show", the output is:
|
| firewall# ipfw pipe list
| 00001: 400.000 Kbit/s 0 ms 50 sl. 0 queues (1
| buckets) droptail
| mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
| 00002: 1.000 Mbit/s 0 ms 50 sl. 0 queues (1
| buckets) droptail
| mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
| q00001: weight 5 pipe 1 50 sl. 0 queues (64 buckets)
| droptail
| mask: 0x00 0xffffffff/0x0000 -> 0x00000000/0x0000
| q00002: weight 5 pipe 2 50 sl. 0 queues (64 buckets)
| droptail
| mask: 0x00 0x00000000/0x0000 -> 0xffffffff/0x0000
|
| The queues are always "0". So, it seems to me like
| they are not getting created. What am I missing? I
| have looked everywhere for answers. Any help would be
| greatly appreciated.
|
| Cheers,
| Alhagie.
|
|
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