Wired Intelligent Edge

 View Only
Back to discussions
Expand all | Collapse all

VoIP QoS priority at global switch level not Vlan

This thread has been viewed 6 times

  • 1.  VoIP QoS priority at global switch level not Vlan

    Posted Jan 17, 2020 09:47 AM

    Hello,

    We are implementing VoIP into our network for the first time. We have no QoS running on any of our switches. We have purchased new 2930 switches dedicated for VoIP phone access.

     

    We have set up dedicated Vlans for each site. A sample Vlan looks like this:

     

    vlan 151
    name "VOIP SBHS"
    untagged 2-52
    tagged 1
    ip address 172.26.18.11 255.255.255.0
    ip helper-address 172.17.0.50
    exit

     

    Our VAR who is helping us get the VoIP project installed asked me to run the following commands on our switches. They said this would enable QoS for voice at a global switch level, not per vlan, and prioritize voice traffic accross any vlan on the switch.

    Enable QoS globally on the switch.
    # qos type-of-service diff-services
    This command enables QoS with the standard 8 queues and the default
    DSCP-to-802.1p mapping
    # show qos type-of-service

    View and modify mapping
    # show qos dscp-map
    This will show the default DSCP-to-802.1p priority mappings.

    # qos dscp-map ef priority 5
    Mapping for Voice/Video Traffic (46)
    # qos dscp-map af41 priority 4
    Mapping for Call Control/Signaling Traffic (34)

     

    I am also attaching the running config after making these changes as well as show qos dscp-map for review.

     

    Thanks for any help!

    Attachment(s)

    pdf
    show_running-config.pdf   226 KB 1 version
    pdf
    show_qos_dscp-map.pdf   217 KB 1 version


Related Content