Locate RTP packets loss between sites connected by MPLS
We experience poor voice quality between IP phones at 2 sites connected by 2M MPLS link. The call statistics show packets lost (RxLost) but no packets discarded. Voice packets are not prioritised in router due to cost issue, but bandwidth utilisation is below 50%. ICMP and RTP packets have same priority over link but ping tests show no packets at all. Average RTT is 50ms. Interfaces at switchports and router interfaces show no packets drop. How can i identify the source of packet loss?
Re: Locate RTP packets loss between sites connected by MPLS
Thanks for your reply.
>> Voice packets are not prioritised in router due to cost issue
we have only 16kbps subscribed for priority bandwidth which is insufficient for our volume of call sessions, it will be costly to increase the bandwidth subscription, hence voice is not treated as high priority in MPLS.
>> ICMP and RTP packets have same priority over link but ping tests show no packets at all.
sorry, it should be no ICMP packets LOSS at all. there is connectivity between the phones.
Provider is telling me that ICMP and RTP have same priority in the circuit, since ICMP ping tests show no packets loss, from network perspective there is no issue. However, our ip phone call statistics show RTP lost, i am not sure how i can determine if the loss occurs in the MPLS network.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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