Hi, I've turn on RTP Monitoring on Adtran Netvanta 3430 and 3448, but can never get any data. Does anyone have any idea why?
touristsis:
Thank you for asking this question in the Support Community.
There are several key aspects of voice quality monitoring (VQM) that should be reviewed when setting it up. I have listed some of these below. They can be found in the Configuring Voice Quality Monitoring in AOS document.
After reviewing this information and the linked documentation, if you have further questions, do not hesitate to reply.
Levi
touristsis:
Thank you for asking this question in the Support Community.
There are several key aspects of voice quality monitoring (VQM) that should be reviewed when setting it up. I have listed some of these below. They can be found in the Configuring Voice Quality Monitoring in AOS document.
After reviewing this information and the linked documentation, if you have further questions, do not hesitate to reply.
Levi
Hi touristsis:
Not sure whether this will be helpful, but @noor just clarified a point for me that may relate to your question. Click here to view that thread. Basically, stateful policies must be used where RTP flows will happen. Stateless policies (common for trusted/private policies, including VPN selectors) will keep VQM from picking up RTP.
That document @levi linked is great too. One more thought: RTP monitoring can be enabled/disabled per interface.
Best,
--
CJ
I'm so confused. So basically, I cannot monitor RTP traffic across VPN or Private Network (from carrier) if the Adtran Router is not terminating the traffic. Is that correct?
Forgive me if I added to the confusion! I thought that maybe my parallel conversation might benefit you with yours.
I don't know your question's background circumstances. However, VQM can occur only for RTP flowing through an AOS router's firewall.
RTP within VPN tunnels can be monitored only by the router terminating the tunnel. This is because traffic within a tunnel is encrypted, and therefore not visible to routers where the tunnel merely passes through. The terminating router can monitor quality because it is decrypting RTP.
Non-encrypted traffic can be monitored in AOS even if it is merely passing through, so long as the firewall is running and properly configured (see earlier comments and the linked document).
This is meant to be a 'clarifying follow up' rather than a 'comprehensive answer.' I hope I'm not adding a layer of mud! An ADTRAN engineer will very likely reply again soon with a more well-put explanation.
--
Chris Jones
touristsis:
I'm marking this post as "assumed answered," but if you have further questions on this topic to not hesitate to reply.
Levi
I went ahead and flagged the "Correct Answer" on this post to make it more visible and help other members of the community find solutions more easily. If you don't feel like the answer I marked was correct, feel free to come back to this post and unmark it and select another in its place with the applicable buttons. If you still need assistance, we would be more than happy to continue working with you on this - just let us know in a reply.
Thanks,
Noor