Hello All,

I need some advices and also some help.

I have 2 sites, remotely connected to each via ptp wireless link. I have also attached the screenshot of the network diagram. The IP of the SIP server is 192.168.0.150.

The Routers I am using are RB750GL

What I want is, I want to priorities the VoIP traffic so that the voice quality can increase. Can anyone please help me on how to do it? Any advice, anything will be helpful as I dont know how to do it.

Best Regards,

Safiullah

Yuo have to use firewall mangle rules and queues.
First of all, identify the type of traffic using magle. but import the SSL7 signs fromhttp://www.mikrotik.com/download/l7-protos.rsc

In this example, My output interface is WLAN and my LAN is in interface ether1.

ros code

/ip firewall mangle
add action=mark-connection chain=forward comment=DNS disabled=no dst-port=53 \
    new-connection-mark=dns passthrough=yes protocol=udp
add action=mark-connection chain=forward disabled=no layer7-protocol=dns \
    new-connection-mark=dns passthrough=yes
add action=mark-packet chain=forward connection-mark=dns disabled=no \
    new-packet-mark=dnsP passthrough=no
add action=mark-connection chain=forward comment="VoIP (SIP)" disabled=no \
    layer7-protocol=sip new-connection-mark=voip passthrough=yes
add action=mark-connection chain=forward comment="VoIP (Skype)" disabled=no \
    layer7-protocol=skypetoskype new-connection-mark=voip passthrough=yes
add action=mark-connection chain=forward disabled=no layer7-protocol=skypeout \
    new-connection-mark=voip passthrough=yes
add action=mark-connection chain=forward disabled=no layer7-protocol=h323 \
    new-connection-mark=voip passthrough=yes
add action=mark-connection chain=forward disabled=no dscp=46 new-connection-mark=voip passthrough=yes
add action=mark-packet chain=forward connection-mark=voip disabled=no \
    new-packet-mark=voipP passthrough=no
add action=mark-connection chain=forward comment="Other traffic" disabled=no \
    new-connection-mark=otros passthrough=yes
add action=mark-packet chain=forward connection-mark=otros disabled=no \
    new-packet-mark=otrosP passthrough=no
add action=mark-connection chain=forward disabled=yes new-connection-mark=\
    desconocido packet-mark=no-mark passthrough=yes

Basicaly, I differenciate three types of traffic:

• Routing protocols
  VoIP
  Other Traffic

ros code

/queue type
add kind=pcq name=PCQ pcq-classifier=src-address pcq-limit=50 pcq-rate=0 \
    pcq-total-limit=2000
add kind=pcq name=DOWN pcq-classifier=dst-address pcq-limit=50 pcq-rate=0 \
    pcq-total-limit=2000
add kind=pcq name=UP pcq-classifier=src-address pcq-limit=50 pcq-rate=0 \
    pcq-total-limit=2000
Then I create two queue type: UP AND DOWN of type PCQ.

Finally, I create the queue tree for the traffic priorization:

ros code

/queue tree
add burst-limit=0 burst-threshold=0 burst-time=0s disabled=no limit-at=0 \
max-limit=750k name=UPLOAD packet-mark="" parent=wlan1 priority=2
add burst-limit=0 burst-threshold=0 burst-time=0s disabled=no limit-at=200k \
max-limit=500k name=VOIP-UP packet-mark=voipP parent=UPLOAD priority=5 \
queue=UP
add burst-limit=0 burst-threshold=0 burst-time=0s disabled=no limit-at=100k \
max-limit=150k name=ROUTING-UP packet-mark=dnsP parent=UPLOAD priority=3 queue=\
UP
add burst-limit=0 burst-threshold=0 burst-time=0s disabled=no limit-at=0 \
max-limit=0 name=OTRO-UP packet-mark=otrosP parent=UPLOAD priority=8 queue=\
UP
add burst-limit=0 burst-threshold=0 burst-time=0s disabled=no limit-at=0 \
max-limit=0 name=DOWNLOAD packet-mark="" parent=ether1 priority=2
add burst-limit=0 burst-threshold=0 burst-time=0s disabled=no limit-at=100k \
max-limit=150k name=ROUTING-DOWN packet-mark=dnsP parent=DOWNLOAD priority=3 \
queue=DOWN
add burst-limit=0 burst-threshold=0 burst-time=0s disabled=no limit-at=0 \
max-limit=0 name=OTRO-DOWN packet-mark=otrosP parent=DOWNLOAD priority=8 \
queue=DOWN
add burst-limit=0 burst-threshold=0 burst-time=0s disabled=no limit-at=200k \
max-limit=500k name=VOIP-DOWN packet-mark=voipP parent=DOWNLOAD priority=\
5 queue=DOWN

I hope this explanation is satisfactory for you and I increase my karma.

Hello and sorry for answer in a old topic. I would like to apply this solution to my case.
I have a rb750 that have the ether3 as wan port to internet and have two ppoe servers in ether4 and ether5 where the computers are connected. I would like to priorize voip.

I am on way to somewhere. As soon as im free ill help you.
Ive successfully prioritised my voip traffic. Ill write a detail answer later

Ok, thank you I will wait.

I apologize for the delay

I guess your VoIP is directly connected to one of the ethernet ports of RB750

Go to IP>>Firewall>>Mangle

Create a new mangle rule.

In General Tab:

Chain: prerouting
Src Address: YOUR VoIP IP ADDRESS

In Action Tab:
Action: Mark connection
New connection Mark: VOIP
Passthrough : Yes (check)


Create Another Rule:

In General Tab:

Chain: prerouting
destination Address: YOUR VoIP IP ADDRESS

In Action Tab:
Action: Mark connection
New connection Mark: VOIP
Passthrough : Yes (check)


Create Another Rule:

In General Tab:

Chain: prerouting
Connection Mark: VOIP

In Action Tab:
Action: Mark packet
New packet Mark: VOIP
Passthrough : No (uncheck)

Now Go to Queues


Create a new Simple Queue
In General Tab:
Name: VOIP Traffic
Target: 0.0.0.0/0
Target Upload
Max limit: I have given 1M - you can give more or less depending on the bandwidth you want for you VoIP.

Target Download
Max limit: I have given 1M - you can give more or less depending on the bandwidth you want for you VoIP
Advanced Tab
Packet Mark : VOIP
Target Upload: unlimited
Priority: 1
Target Download: unlimited
Priority: 1
Parent None.

Now create another Simple Queue.

In General Tab:
Name: All other Traffic
Target: 0.0.0.0/0
Target Upload
Max limit: I have given 5M - you can give more or less depending on the bandwidth you want for you VoIP.

Target Download
Max limit: I have given 5M - you can give more or less depending on the bandwidth you want for you VoIP
Advanced Tab
Packet Mark : no-mark
Target Upload: unlimited
Priority: 8
Target Download: unlimited
Priority: 8
Parent None.


This is all you got to do. Do reply if you need any more help. And do tell the results.