After VoIP Prio set through wizard: Inbound DSCP is set, Outbound not?



  • Hi,

    just went through the traffic shaper wizard and saved a capture file to check VoIP priority.
    RTP traffic from phone (separate vlan) to pbx (which is in the cloud) has set the DSCP CS5.
    RTP traffic from the pbx to the phone still has DSCP default.

    Should it not be set in both directions??



  • @fips:

    Hi,

    just went through the traffic shaper wizard and saved a capture file to check VoIP priority.
    RTP traffic from phone (separate vlan) to pbx (which is in the cloud) has set the DSCP CS5.
    RTP traffic from the pbx to the phone still has DSCP default.

    Should it not be set in both directions??

    Traffic-shaping primarily applies to transmitted traffic (which you control) rather than received traffic (which you have very little control over).

    Do DSCP tags even survive outside your local network?

    A good intro to the fundamentals of traffic-shaping/QoS can be found here: http://www.linksysinfo.org/index.php?threads/qos-tutorial.68795/


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