Auto QoS Settings

[shawny]

Hello All,

Just need a quick verification on the auto qos voip trust command.  I am using it to try and prioritize traffic coming from an SBC going to the ITSP.  We have a 4948-10G switch sitting between the two.

SBC -----> 4948 -------->  ITSP

The SBC is sitting on port 1/19

When I run auto qos it puts an outbound policy on the interfaces that looks like it is putting priority traffic into tx-queue 3, giving it 15% of the bandwidth and shaping the traffic to 15%.  (I changed values from 33%).

My question is ...  is this sufficient to at least prioritize VoIP traffic as it traverses the 4948 switch?

I have included the config for reference.

Thank you for any and all help.

[Terry Cheema · Accepted solution]

Since its going through a Gig interface and you have configured 33% of the interface bandwidth i.e 330Mb for the priority traffic/voice calls, before it starts shaping on this switch.

I would guess this is more than enough for the voice calls but in the end depends on your environment (enterprise, SP/Re-seller etc.). You can just compare with the SIP channels/Call package you have bought and compare if this bandwidth is sufficient to run at full capacity. (BW you would need for your all SIP calls = Number of maximum calls x BW per call depending on codec G711/G729)

-Terry