Cisco Phone Best Practice?

Kind of a big deal

Cisco Phone Best Practice?

I'm going to start digging through any articles on the subject, but just curious if anyone has any 'I always do this' when deploying Cisco phones on Meraki gear.


I have a full stack MX/MS using VPN to MX at datacenter


Curious anyone does any specific QoS things for the switch ports (or VPN tunnel etc.)


First time trying this so hopefully it goes well, if I could just get the phone registration to stop spinning lol

Nolan Herring |
Here to help

We are using cisco LAN and Wireless phones where we follow below practise:


1. Keep a separate VLAN for Voice traffic

2. Trust incoming DSCP values

3. Set Voice VLAN DSCP to 46--> Class 3 (EF Voice)


if you have Meraki Firewalls as well then create a Rule under Traffic shaping rules to set the DSCP value for Voice VLAN subnet



Thanks for the reply


For #3 , are you applying that on the switch settings?


I'm curious if this is needed, if your already trusting DSCP, then isn't the cisco phone marking its packets correctly to begin with, so it should naturally pass through the switch with EF already right?


I do have an MX and I have the default QoS applied to the VPN tunnel. Is that adequate or do I need to do it for the entire voice vlan?



Nolan Herring |

i would suggest to manually put the settings and do not keep default to overcome any voice related issues


MS Settings below

Screen Shot 2019-03-13 at 1.47.42 PM.png


MX below


Screen Shot 2019-03-13 at 1.54.18 PM.png

Kind of a big deal
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