Qos for voice on port for access switch

[mburguk1000]

I am in the process of adding a new access layer switch for voice and Pcs and I have replicatedthe config we already have on our existing switches

Can some on tell me if if the qos config is over kill or really needed ?

srr-queue bandwidth share 10 10 60 20

srr-queue bandwidth shape  10  0  0  0

queue-set 2

mls qos trust device cisco-phone

mls qos trust cos

auto qos voip cisco-phone

spanning-tree portfast srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape  10  0  0  0
queue-set 2
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
spanning-tree portfast

Many Thanks

[paolo bevilacqua]

In my opinion, QoS on LAN networks is totally not needed, until the contrary is proven in your specific application.

I had someone imposing QoS on a medium sized, voice enabled, LAN network that I administer. Strange things started happening including DHCP failures. Once removed, everything returned 100% stable as before, and so it remained since.