How To Make Asterisk Set Cos Values

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Asterisk Users 3 Comments

Hi,

examining the network traffic with wireshark shows that asterisk does not set any QoS values at all.

What do I need to do to make asterisk set QoS values (on CentOS 7)?

The wiki says to use vconfig to set QoS values[1]. What does the skb-priority need to be set to? How do you use vconfig on interfaces that are not VLAN
interfaces?

Is it generally impossible to set QoS values on bonding interfaces?

[1]: https://wiki.asterisk.org/wiki/display/AST/IP+Quality+of+Service

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3 thoughts on - How To Make Asterisk Set Cos Values

  • Further down that page it talks about the options for both chan_sip and chan_pjsip for setting TOS and CoS values. It can be done in configuration.

  • Well, yes, I have set these options. I am under the impression that asterisk is using default values when these options are not set, but the wiki doesn’t say. Do I need to create a VLAN interface?

    I have also installed libcap and recompiled, and I don’t know how to tell if it’s actually used or not. I tried with selinux set to permissive to no avail. I could run asterisk as root and see if the values get set, but that might change ownership on files asterisk creates and could cause trouble later.

    Asterisk even says on the console ” == Using SIP RTP Audio CoS mark 5″. I
    can see that packets from phones are marked and the ones from asterisk are not.

    [xxx]
    type = wizard accepts_auth = yes accepts_registrations = yes endpoint/cos_audio = 5
    endpoint/cos_video = 4
    […]

    [transport-tls]
    type=transport protocol=tls bind=0.0.0.0:5061
    cos=3
    […]

    I never checked this, and now it’s time that I want to know for sure and set it up like it’s supposed to be. It’s silly to have traffic control in place when the packets are not marked so it doesn’t work to begin with.

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