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opensense-docs/source/manual/how-tos/shaper_dedicated_bw.rst

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==============================
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.
.. nwdiag::
:scale: 100%
:caption: Shaping hosted VOIP / SIP trunk sample
nwdiag {
span_width = 90;
node_width = 180;
Internet [shape = "cisco.cloud"];
ip_phone [label="IP Phone",shape="cisco.ip_phone"];
ip_phone -- switchlan;
network LAN {
switchlan [label="",shape = "cisco.workgroup_switch"];
label = "LAN OPNsense";
address ="192.168.1.x/24";
fw1 [label="OPNsense",address="192.168.1.1/24"];
}
network WAN {
label = ".WAN OPNsense";
fw1 [label="OPNsense", shape = "cisco.firewall", address="172.10.1.1/32"];
Internet;
}
network SIPHOST {
label = ".WAN SIP PROVIDER";
Internet;
sip_server [label="SIP/VOIP Server",shape="cisco.sip_proxy_werver", address="172.10.2.1/32"];
}
}
To start go to :menuselection:`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*
.. image:: images/shaping_rules_s1.png
:width: 100%
.. |apply| image:: images/applybtn.png