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MQC Low Latency Queueing

Written by Rene Molenaar on . Posted in Quality of Service (QOS)

Scenario:

You are the VoIP specialist at the ISP you are working for. To ensure all VoIP traffic has enough bandwidth and low delay you have to implement some Quality of Service settings. It's time to classify and mark some traffic!

Goal:

  • All IP addresses have been preconfigured for you.
  • The serial link between router Prio and Line has a bandwidth of 128Kbps.
  • Configure an outbound policy on router Line with the following configuration:
  • RTP traffic should have a priority queue which is 10 percent of the bandwidth.
  • TELNET traffic should get a remaining bandwidth of 25 percent of the bandwidth.

IOS:

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Topology:

Low Latency Queueing

Video Solution:

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Comments (5)

  • avatar
    SteveOcchO86

    Class-maps to match the RTP and TELNET data (separate class-maps of course)
    Specify the priority keyword in the policy-map for RTP traffic. Then apply the service policy.

    http://www.cisco.com/en/US/docs/ios/12_2/qos/configuration/guide/qcfwfq_ps1835_TSD_Products_Configuration_Guide_Chapter.html#wp1022204

  • avatar
    ReneMolenaar

    Seems you have been busy with Qos Steve, thanks for sharing all this!

  • avatar
    Freddie

    class-map match-all RTP
    match protocol rtp
    class-map match-all TELNET
    match protocol telnet
    !
    !
    policy-map POLICY
    class RTP
    priority percent 10
    class TELNET
    bandwidth remaining percent 25

  • avatar
    shrey.datta

    where is the video mate?

  • avatar
    ReneMolenaar

    Not here yet...coming soon hopefully :)