Reserve dedicated bandwidth

Reserve dedicated bandwidth for a realtime traffic such as (hosted) Voice Over IP (VOIP) server.

In this scenario we will create a pipe dedicated for traffic going to and coming from our realtime application. For the sample we presume a SIP trunk or hosted Voice Over IP (VOIP) server.

For this example we presume a requirement of 4 uncompressed voice channels of 64 kbps, resulting in a total bandwidth of 256 kbps. The internet connection in this example has 10 Mbps Download and 1 Mbps Upload.

Shaping hosted VOIP / SIP trunk sample

To start go to Firewall ‣ Shaper ‣ Settings.

Step 1 - Create Upload and Download Pipes

On the Pipes tab click the + button in the lower right corner. An empty Edit Pipe screen will popup.

Create Pipe For Upload (To our VOIP Server)

enabled

Checked

Check to enable the pipe

bandwidth

256

Numeric value of the desired bandwidth

bandwidth Metric

Kbit/s

Metric to use with the numeric value

mask

(Empty)

Used for auto queueing, empty for our sample

description

PipeUp-256kbps

Free field, enter something descriptive

Create Pipe For Upload (Other Traffic = 1024 kbps - 256 kbps = 768 kbps)

enabled

Checked

Check to enable the pipe

bandwidth

768

Numeric value of the desired bandwidth

bandwidth Metric

Kbit/s

Metric to use with the numeric value

mask

(Empty)

Used for auto queueing, empty for our sample

description

PipeUp-768kbps

Free field, enter something descriptive

Create Pipe For Download (From our VOIP Server)

enabled

Checked

Check to enable the pipe

bandwidth

256

Numeric value of the desired bandwidth

bandwidth Metric

Kbit/s

Metric to use with the numeric value

mask

(Empty)

Used for auto queueing, empty for our sample

description

PipeDown-256kbps

Free field, enter something descriptive

Create Pipe For Download (Other Traffic = 10240 kbps - 256 kbps = 9984 kbps )

enabled

Checked

Check to enable the pipe

bandwidth

9984

Numeric value of the desired bandwidth

bandwidth Metric

Kbit/s

Metric to use with the numeric value

mask

(Empty)

Used for auto queueing, empty for our sample

description

PipeDown-9984kbps

Free field, enter something descriptive

Step 2 - Create Rules

On the Rules tab click the + button in the lower right corner. An empty Edit rule screen will popup.

Create a rule for traffic directed towards the VOIP Server (Upload).

sequence

11

Auto generated number, overwrite only when needed

interface

WAN

Select the interface connected to the internet

proto

ip

Select the protocol, IP in our example

source

any

The source IP to shape, leave on any

src-port

any

The source port to shape, leave on any

destination

172.10.2.1

The IP address of our VOIP server

dst-port

any

Use any of the destination port if static

target

PipeUP-256kbps

Select the Upload 256 kbps Pipe

description

ShapeVOIPUpload

Enter a descriptive name

Create a rule for traffic coming from the VOIP Server (Download).

sequence

21

Auto generated number, overwrite only when needed

interface

WAN

Select the interface connected to the internet

proto

ip

Select the protocol, IP in our example

source

172.10.2.1

The IP address of our VOIP server

src-port

any

The source port to shape, leave on any

destination

any

The destination IP to shape, leave on any

dst-port

any

The destination port to shape, leave on any

target

PipeDown256kbps

Select the Download 256 kbps Pipe

description

ShapeVOIPDown

Enter a descriptive name

Create a rule for all other internet upload traffic

sequence

31

Auto generated number, overwrite only when needed

interface

WAN

Select the interface connected to the internet

proto

ip

Select the protocol, IP in our example

source

192.168.1.0/24

The source IPs to shape, our LAN network

src-port

any

The source port to shape, leave on any

destination

any

the destination address, leave in any

dst-port

any

Use any of the destination port if static

target

PipeUp-768kbps

Select the Upload 768 kbps Pipe

description

ShapeUpload

Enter a descriptive name

Create a rule for all other internet download traffic

sequence

41

Auto generated number, overwrite only when needed

interface

WAN

Select the interface connected to the internet

proto

ip

Select the protocol, IP in our example

source

any

The source IP to shape, leave on any

src-port

any

The source port to shape, leave on any

destination

192.168.1.0/24

The destination IPs to shape, our LAN network

dst-port

any

The destination port to shape, leave on any

target

PipeDown-9984kbps

Select the Download 256Kbps Pipe

description

ShapeDown

Enter a descriptive name

Note

Be aware of the sequence! It is important to make sure the right traffic is passed to the right pipe.

Now press apply to activate the traffic shaping rules.

Screenshot Rules

../../_images/shaping_rules_s1.png