Basic Voice QOS config example

[dan hale]

Hello Voice gurus,

I'm in the process of setting up voice qos on our core switch that handles are routing. It is a cisco WS-C4507R with System image file is "bootflash:cat4000-i9s-mz.122-25.EWA1.bin". All uplink and downlink interfaces are a Gigabit. Our 4 IDFs plug into this same switch.

I'm looking for a easiest basic configuration for handling voice traffic. Does any one have a configuration that they have used in the past and would be willing to share?

Thanks in advanced....

Dan

[acampbell]

Hi,

QOS is a very complex subject.

You should start by looking at this SRND in the section for 4500 switches.

You need to know the card/module types etc

http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/QoSCampus_40.html#wp1099634

Regards,
Alex.
Please rate useful posts.

[Tagir Temirgaliyev]

Hi

I suppose you need only 2 or more vlans. voice and data. or voice and data1, data2, data3.

more detail depends on the exact scheme

[dan hale]

Hello....correct We have just one Data Vlan (192.168.14.0 /23) and two voice vlans10.14.50.0 /23 and 10.14.52.0 /23.

Both L3 interfaces for voice subnets are on the same 4507. We have a second campus a few miles from are main campus that has a 4507 as well. They are connected via fiber and are also connected via trunks ( not a routed link). Currently we do not route but, plan to in the near future thus the reason for the second voice vlan. I felt it would be an easier transition when we do convert that into a routed link.

thnaks,

Dan

[Tagir Temirgaliyev]

I suppose

if the traffic on fiber trunk ports does not exceed 50% of port speed then you do not need to do something