Warning or Critical QoS alarms

Last Updated : Jan 25, 2022 |

Possible reasons for QoS alarms include:

  • The endpoint client may be having difficulties in generating a good packet stream.

  • The endpoint client NIC may be misconfigured or dropping packets

  • Missing or incorrect DSCP setting in Avaya Aura® MS configuration

  • Missing or incorrect DSCP settings or policies in network routers or switches

  • The network routers and switches between the client and the Avaya Aura® MS may be overloaded, dropping packets

  • The Codec selected by the client may not produce a quality audio experience at the network packet loss rate

  • Avaya Aura® MS may have been installed on a virtual machine (VM) that is improperly configured

  • Avaya Aura® MS NIC is dropping packets or incorrectly configured.

Proposed solutions

  • Examine endpoint client to ensure it is producing a quality packet stream.

  • Examine endpoint client NIC driver or configuration.

  • Examine Avaya Aura® MS DSCP setting to ensure they match the network policy

  • Examine client and network switch and routers settings to ensure they enforce the expected packet prioritization.

  • Examine network configuration to ensure network is not causing unexpected loss due to congestion or other factors

  • Choose higher quality Codecs compatible with network loss rate specification.

  • If Avaya Aura® MS is installed on a Virtual Machine, improper VM resource allocation/reservation can cause packets to be lost in the oncoming network drivers. Refer to “Deploying and Updating Avaya Aura® Media Server Appliance FP1” and follow all requirements and recommended best practices for VM configuration.

  • Examine Avaya Aura® MS server NIC configuration.

  • If the QoS alarms are determined to be due to Codec preference and network configuration decisions that cannot be changed, the options are:

    • Disable the QoS alarm, removing a useful warning of unexpected network problems.

    • Decrease thresholds for QoS warning or critical states such that normal observed levels of quality degradation do not trigger the alarms.

    • Increase numbers of sessions allowed in the warning or critical states before raising alarms.