Needing an Example of Cisco QOS for Zoom

[randyclark]

I need to apply QOS to my routers for ZOOM. I noticed on the ZOOM controller the DSCP ports are different. The default Zoom DSCP marking values are 56 for audio, 40 for video, and 40 for signaling. Would changing the following work? 

From this....

class-map match-any VOICE
match dscp cs3
match ip dscp ef
class-map match-any VIDEO
match dscp cs4
match dscp af41

To this....

class-map match-any VOICE
match dscp cs3
match ip dscp ef56
class-map match-any VIDEO
match dscp cs4
match dscp af40

Thanks for any advice in advance!

[balaji.bandi]

As per the document, it is correct.

https://support.zoom.us/hc/en-us/articles/207368756-QoS-DSCP-Marking

make necessary changes and test and advise.

[Meheretab Mengistu · Accepted solution]

Hi Randy,

Please make the following corrections as there is no ef56 and af40 afaik.

class-map match-any VOICE
match dscp cs3
match ip dscp cs7
class-map match-any VIDEO
match dscp cs4
match dscp cs5

If you are having only 56 for Voice and 40 for Video and Signaling, you do not need dscp cs3 and cs4. You can clean it up more as follows (assuming you are running only IPv4) :

class-map match-any VOICE
match ip dscp cs7
class-map match-any VIDEO
match ip dscp cs5

HTH,

Meheretab

[Dennis Mink]

on your QoS policing device (ASR, ISR, or whatever),

on the inbound interface, just re classify, SIP and RTP traffic through the ACL into ef and af41, this way you keep it conistent.

access list for instance:

access-list 100 permit udp any any range 16384 32767

access-list 100 permit tcp any any eq 5060

!

route-map classify_mark 

 match ip address 100 

 set ip precedence 5

!

interface Ethernet0/0 

 ip address 10.10.10.1 255.255.255.0 

 ip policy route-map classify_mark