[AsteriskBrasil] Controle de BANDA

[Luiz Fabiano T.I CTO (Tempo Filmes)]

Olá Comunidade,

 

                - Eu estava com problemas de RUIDOS no meu VOIP, eu estou
usando VONO e VIRTUA para a comunicação, resolvi comprar um link de 12MB por
700K e usar este exclusivo para meu Server VOIP, porém continuo com
problemas de ruídos e picote na ligação, quando faço o teste de velocidade
este se apresenta PERFEITO, sempre com a velocidade de 12MB x 700K, não
tenho nenhum gargalo na rede física LOCAL, porém mesmo assim resolvi copiar
um script de QoS que consegui no asteriskguru, e adaptei-o, porém acho que
as vezes o problema pode estar nele, e preciso da ajuda de vocês (Minha
rede: 192.168.0.0/24).

 

 

O Script:

 

#!/bin/bash

 

TC=/sbin/tc

 

DEV=eth4

 

if [ "$1" = "prio" ]

then

       CEIL=170

       DOWNLINK=768

else

       CEIL=370

       DOWNLINK=12288

fi

 

# low priority OUTGOING traffic - you can leave this blank if you want

# low priority source netmasks

NOPRIOHOSTSRC=

 

# low priority destination netmasks

NOPRIOHOSTDST=

 

# low priority source ports

NOPRIOPORTSRC=

 

# low priority destination ports

NOPRIOPORTDST=

 

if [ "$1" = "status" ]

then

       $TC -s qdisc ls dev $DEV

       $TC -s class ls dev $DEV

       exit

fi

 

# clean existing down- and uplink qdiscs, hide errors

$TC qdisc del dev $DEV root    2> /dev/null > /dev/null

$TC qdisc del dev $DEV ingress 2> /dev/null > /dev/null

 

if [ "$1" = "stop" ]

then

       exit

fi

 

###### uplink

 

$TC qdisc add dev ${DEV} root handle 1: prio bands 2 priomap 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1

$TC qdisc add dev ${DEV} parent 1:1 handle 11: pfifo

$TC qdisc add dev ${DEV} parent 1:2 handle 12: htb r2q 3

 

$TC class add dev ${DEV} parent 12: classid 12:1 htb rate ${CEIL}kbit burst
2k

 

$TC class add dev ${DEV} parent 12:1 classid 12:10 htb rate
$[50*$CEIL/100]kbit ceil ${CEIL}kbit burst 2k prio 1

$TC class add dev ${DEV} parent 12:1 classid 12:11 htb rate
$[30*$CEIL/100]kbit ceil ${CEIL}kbit burst 2k prio 2

$TC class add dev ${DEV} parent 12:1 classid 12:12 htb rate
$[20*$CEIL/100]kbit ceil ${CEIL}kbit burst 2k prio 3

 

$TC qdisc add dev ${DEV} parent 12:10 handle 1210: sfq perturb 10

$TC qdisc add dev ${DEV} parent 12:11 handle 1211: sfq perturb 10

$TC qdisc add dev ${DEV} parent 12:12 handle 1212: sfq perturb 10

 

# VoIP traffic always get first in line

$TC filter add dev ${DEV} parent 1: prio 1 protocol ip u32 match ip tos 0x68
0xff match ip protocol 0x11 0xff flowid 1:1

 

$TC filter add dev ${DEV} parent 1: prio 1 protocol ip u32 match ip tos 0xb8
0xff match ip protocol 0x11 0xff flowid 1:1

 

# All non-VoIP traffic on the second band

$TC filter add dev ${DEV} parent 1: protocol ip prio 3 u32 match ip src
0.0.0.0/0 flowid 1:2

 

# TOS Minimum Delay

$TC filter add dev ${DEV} parent 12: protocol ip prio 10 u32 match ip tos
0x10 0xff flowid 12:10

 

# ICMP (ip protocol 1) in the interactive class

$TC filter add dev ${DEV} parent 12: protocol ip prio 11 u32 match ip
protocol 1 0xff flowid 12:10

 

# To speed up downloads while an upload is going on, put ACK packets in

# the interactive class:

$TC filter add dev ${DEV} parent 12: protocol ip prio 12 u32 match ip
protocol 6 0xff match u8 0x05 0x0f at 0 match u16 0x0000 0xffc0 at 2 match
u8 0x10 0xff at 33 flowid 12:10

 

# some traffic however suffers a worse fate

 

for a in $NOPRIOPORTDST

do

       $TC filter add dev $DEV parent 12: protocol ip prio 30 u32 match ip
protocol 0x6 0xff match ip dport $a 0xffff flowid 12:12

done

 

for a in $NOPRIOPORTSRC

do

       $TC filter add dev $DEV parent 12: protocol ip prio 31 u32 match ip
protocol 0x6 0xff match ip sport $a 0xffff flowid 12:12

done

 

for a in $NOPRIOHOSTSRC

do

       $TC filter add dev $DEV parent 12: protocol ip prio 32 u32 match ip
protocol 0x6 0xff match ip src $a flowid 12:12

done

 

for a in $NOPRIOHOSTDST

do

       $TC filter add dev $DEV parent 12: protocol ip prio 33 u32 match ip
protocol 0x6 0xff match ip dst $a flowid 12:12

done

 

# rest is 'non-interactive' ie 'bulk' and ends up in the default queue

$TC filter add dev ${DEV} parent 12: protocol ip prio 20 u32 match ip src
0.0.0.0/0 flowid 12:11

 

########## downlink #############

# slow downloads down to somewhat less than the real speed  to prevent

# queuing at our ISP. Tune to see how high you can set it.

# ISPs tend to have *huge* queues to make sure big downloads are fast

#

# attach ingress policer:

 

if [ "$1" = "prio" ]

then

 

$TC qdisc add dev $DEV handle ffff: ingress

 

# filter *everything* to it (0.0.0.0/0), drop everything that's

# coming in too fast:

 

$TC filter add dev $DEV parent ffff: protocol ip prio 50 u32 match ip
protocol 0x6 0xff police rate ${DOWNLINK}kbit burst 10k drop flowid :1

 

fi

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