Sure.Here are the few data points and best practices that I would recommend.
By default, Enbaling WMM on SSID-pofile on the controller will automatically prioritize the traffic on the air.
Aruba controller firewall is capable of doing deep inspection of voice protocols and prioritze them automatically.
On controller, by default we have the configuration of DSCP mapping of 46 and 6 which is still configurable from ssid-profile according to requirement.
Few commands to controller to check for WMM markings. Find below
show ap debug system-status ap-name <name of the ap>
show ap debug client-stats <client- mac address>
show ap debug radio-stats ap-name <name of the ap> radiO 0/1 advanced | include WMM
Enable wwm from SSID-profile, select any upper UNII band channels like 149,161 or 153 as a back-haul and check for RSSI over the mesh link.Configure and prioritize the QOS traffic on the user-role so that any incoming traffic to the controller will have DSCP markings and traffic prioritization.
show datapath session table | include <call-server ip address>
show datapath session table | include <client-ip addres>
From your comments, I understand back-haul is on "a" radio. Things that we need to keep in mind while implemention QOS for mesh here.
- Type of antenna we use and it`s antenna gain
- Distance between mesh links and how good is the LOS (Line of sight between them)
- RSSI on the mesh link.
- Type of application or protocol used in the network for QOs.
- Bandwidth & throughput we get on the wired-side.
- Latency to reach the call-server from wired-side.
- Type of phones/application that will be used on the network.
- Make sure you set the max power on the phones and disable power-save on the phone for beter performance.
- Configure the Encryption type WPA2-PSK between mesh link so that we could avoid any packet-corruption over the air.
- Enable HT with 40 MHZ on the controller (Enabled by default)
Since we are going to user wired phones; try to compare the latency and QOS markings on the wired-side first to measure and understand how is the performance on wired-side and QOS/DSCP markings done on the wired-side. By this way we could optimize the config on the controller to get the END-END QOS delivery with better performance.
Always make sure link quality and RSSI is always good say for example with min of RSSI "40" and link qulaity of "70%" to have a good performance.
show ap mesh topology
show ap mesh neighbours
Above commands will help us to understan RSSI and link quality across the mesh.
I have also attached Voice & QOS VRD implementation and best practice on the Aruba controller.
Please let me know if have any questions specifics on above theory or on VRD that we could help you.
Hope this help you to have a good start.
Thank you.