ClearFoundation

I have attached an image with my QoS-settings in ClearOS.

I am trying to get a better VoIP-connection by giving high priority to traffic coming from and going to the public VoIP-server.

This is my network setup :

IPphone/PC -- switch -- ClearOS -- internet(cable) -- VoIPserver

I don't see a change between the QoS settings activated and not.

When I download something (torrent) the VoIP-conversation has real jitter-issues. These jitter-issues should not happen when QoS is applied.

Hi jonaskellens,

I can't comment on why you see no difference with or without QoS when connecting to your public VoIP server.
Partly because you didn't use the Advanced Rules where you can specify source and destination, but maybe also because it's a public VoIP server.

But what I can say is this:
QoS only works when using a limited amount of connections, unlike torrents.
When you want to limit torrents you will have to learn how to do a connlimit, or wait until the L7-filter comes out in April 2010.

Greetings,

John

Torrent was just one example to show how other network traffic interferes although there are QoS rules set...

I did use the advanced rules: I set the source for download and the destination for upload as the public VoIP-server.

What I meant to set was : all traffic coming from and going to the public IP-address of the VoIP-server must be treated as high priority.

Didn't I set this correctly ??

Hi jonas,

I don't know if you didn't do it correctly, but I am almost sure you didn't use the advanced rules (Direction ... = Flowing ...) and you also didn't follow the link I sent you about source and destination (In your situation you need at least 4 rules for 1 port)
Plus you also combine "reserving VoIP" (1 port)with an "RTP" rule (for all ports), so I am not surprised it doesn't work.

When using QoS, you should try to limit it's use more specifically to the port that it's intended for (without overlapping each other) so preferably do not use rules for all ports.

For example ... with your rules, when you take a hot shower and someone else opens another hot water tab, you will be screaming , because your hot water flow is overlapping and not separated

Greetings,

John

John,
thank you for your reaction.

I have not used advanced rules for the SIP-protocol, as this was pre-defined. This signaling is not so important so actually I could leave this rule out...

But the RTP (audio) is important and there I have defined advanced rules.

There is no other traffic coming from or flowing to the VoIP-server than the audio-flow, so I thought it was ok to define just the IP-address and no ports.

There is no way of giving a range of UDP-ports, so how do I define QoS rules for 50 ports ??

Hi jonas,

You should try to follow the advice given earlier, before asking a question.
Your answer is in the same thread that I gave you the link for (when you read it from the beginning).
If you still have questions after doing so, your free to ask.

You can create the rules for one port and than manually edit "/etc/firewall" and multiply for every port.
AFAIK, the advanced bandwidth rules are only port specific, so for TCP/UDP/GRE/ESP/AH.

Good luck,

John