Hi Carlos,
Please find my answers inline:
Scenario1
if the packet is coming from the switch to the wireless controller
if it got a voice packet tagged with DSCP(not the default one you use on Wireless controller) does it pass the tag it has whatever it is to the AP?
Yes, for downstream traffic, the DSCP value of the packets are retained
Scenario2
if the packet goes from the AP to the controller it will tag it with DSCP 56 the controller will keep this tag automatically and pass it to the Switch... now on the switch i can take that DSCP value and maintain it all the way to the ip pbx or all around my network(so it will has priority) even if its using another DSCP value, but the issue with this is that if i got another thing inside the company let say that in the company DSCP 56 was assigned to video... then on the switches they willl have the same priority all over the wired network
What we want is to have the same DSCP value in all the system for my understanding thats is what we should do(im not an expert in QoS neither in Voice) thtas why im asking.
Yes, if you configure 56 for voice as well as video in SSID profile, voice and video upstream traffic will use same DSCP-56
Extra Questions
1-Now if the company is already running another values for Voice and video guess is less work just changing them on the controller, on the WMM option on the SSID right?
Yes, If you want different DSCP values to be mapped for voice and video, you just need to map these in the SSID profile
2-When the packet is in the air let say i got an IP phone, and im using the same corporate SSID(not needing another SSID for voice like other brands)How does aruba recognize its a voice traffic? with application aware? how does it recognize is a voice traiffc? when im using WMM and the client support it i mean.
If the wmm priority is set to 6 or 7 in the packets from IP phone, then the traffic is considered as voice.
In addition to this, we can recognize voice traffic based on the ALG used by the IP phone
3-If the client does not support wmm i got no other option that on the firewall rule to put maybe the ports on a rule and the network its using and give it priority but the problem here is that i cannot use DSCP values on the rule i just can use TOS or 802.1p. How can i manage that? if we are using on our switches DSCP values for priority.
I am not sure if I understood this question. Did you mean that, you cannot use DSCP values because while creating a rule, the options available are 'tos' and 'dot1p-priority'?
If so, on the aruba firewall rule, TOS is same as DSCP value. You can set the required DSCP value as TOS in your rule
Thanks,
Minnoo