Cisco VOIP qos need some quick learning

[big_tiger]

At my job we are currently programming new Cisco devices for the new noc, and a lot of it is copy paste from other components from similar devices that are currently running. We have 4 new 48 port 3850s for VOIP phones and they run ios XE 3.2.x.

The issue now is that the older 3750s run a differnet ios, and the new 3850s don't use the mls qos commands anymore. I don't know shat about programming VOIP qos (above my pay grade), but I want to understand wtf I'm looking at. Cisco has auto voip qos, so is code blocks like the one below needed? Also we outsourced the voip qos coding, so Im not even sure they just didn't add all that mls qos code as fluff.

This is just a small sample of what is under all the mls qos

mls qos srr-queue input cos-map queue 1 threshold 2 1
mls qos srr-queue input cos-map queue 1 threshold 3 0
mls qos srr-queue input cos-map queue 2 threshold 1 2
mls qos srr-queue input cos-map queue 2 threshold 2 4 6 7
mls qos srr-queue input cos-map queue 2 threshold 3 3 5

interface GigabitEthernet0/1
 description <== User Port ==>
 switchport voice vlan 12
 srr-queue bandwidth share 10 10 60 20
 queue-set 2
 priority-queue out 
 mls qos trust device cisco-phone
 mls qos trust cos
 auto qos voip cisco-phone 
 spanning-tree portfast
 service-policy input AutoQoS-Police-CiscoPhone

If someone knows of a packet tracer, or some article explaining voip qos programming I would appreciate it.

[big_tiger]

Dang no one? I knew it was a long shot, but damn.

[mustang_revival]

I don't know much about VOIP, but I do know a little about Cisco.

Here is a good article explaining the first part, the threshhold commands and what the metrics mean.

https://supportforums.cisco.com/thread/2004369

For the 2nd part of your question, many times Cisco will make commands be "on" by default and not necessarily spelled out like in other or older versions of IOS.

For Packet tracer setup - This looked pretty straight forward: http://www.stevebrookes.id.au/mediaw..._Packet_Tracer

[BlackGT]

[big_tiger]

I don't know much about VOIP, but I do know a little about Cisco.

Here is a good article explaining the first part, the threshhold commands and what the metrics mean.

https://supportforums.cisco.com/thread/2004369

For the 2nd part of your question, many times Cisco will make commands be "on" by default and not necessarily spelled out like in other or older versions of IOS.

For Packet tracer setup - This looked pretty straight forward: http://www.stevebrookes.id.au/mediaw..._Packet_Tracer

Thanks I'll have to read while I'm at work with less distractions.

Next up is this bad boy.



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