[cisco-voip] How to check for QoS?

[A.L.M.Buxey at lboro.ac.uk]

Hi,

> what does 'if QoS was enabled' mean?
> cisco hardphones: set DSCP according to CM config barring a few defects
> cm: QoS is configurable depending on customer policy
> voice gateways: QoS configurable depending on customer policy
> what method of CAC is in use? GK, CM Locations, RSVP?
> switches: may or may not trust phones, but are you doing dot1q or dot1p  
> tagging to take advantage of L2 QoS?  Are you trusting phone QoS?
> network: do the devices even support any type of QoS? 1q2T 2q2T.... are  
> their priority output queues? is it such high bandwith with such low  
> utilization that QoS is N/A?  are firewalls, Border Elements, or Proxies  
> in use?  Do those preserve ip prec or DSCP?
> what is the standard for QoS in the network? ip prec or DSCP?  what QoS  
> classes are in use on the network?  there are recommended defaults but  
> those do not have to be followed.
> are there soft clients in use?  how is QoS designed and deployed for those?
>
> The net is that QoS is 7 parts technical and 3 parts policy.
>
> Proper QoS depends on agreement between the policy and the configuration  
> of devices. 
>
> the simple question unfortunately is not so simple.

but its usually obvious if theres not parts present.

still, a great list of question and points to summarise this thread.
certainly a list I'll keep to interogate future networks  :-)

alan