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- Re: CMA DNS SRV Record
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11-26-2012 04:23 PM
I'm trying to get auto discovery working for CMA, but I'm getting stuck in a "Unable to connect to the provisioning server" message. I run Wireshark and see the request from my computer to the DNS asking "Standard query SRV _cmaconfig._tcp", but the DNS responds with "no such name".
Attached is a screen cap of how my DNS admin configured the service. The text in the admin guide says I should have something like this: "__cmaconfig._tcp.wvus.org 86400 IN SRV 0 0 443 vtc.wvus.org".
Any hints where i messed up?
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Accepted Solutions
11-27-2012 12:15 AM
Hello NoSatrun,
welcome to the Polycom community.
It looks like you are using two __ lines rather than just one _
Best Regards
Steffen Baier
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.
Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN
11-27-2012 12:15 AM
Hello NoSatrun,
welcome to the Polycom community.
It looks like you are using two __ lines rather than just one _
Best Regards
Steffen Baier
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.
Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN
11-27-2012 09:24 AM
Thanks Steffen. I followed the CMA doc with a copy and paste 🙂
I removed the extra "_" but find the same thing. Attached is the wireshark of the two marked frames. It is starting to look to me like the DNS is checking an external name server for this.
Am I right? if so, what do I tell my DNS admin? If not, ?
11-27-2012 10:12 AM
You are right, the dns lookup is going to the root DNS servers:
_cmaconfig._tcp..!............@.a.root-servers.net..nstld.verisign-grs.com
Your domain name is missing from the service lookups. I would check to see if the PC is part of a domain or not. You can also look the TCP/IP properties of the network connection you are using. There is a DNS tab which has some options about adding a suffix (aka you domain name). I would try this first and repeat your tests.
S.
08-20-2013 05:30 AM
Hi Steffen,
I am having this same issue. I have deployed two CMA4000 servers, and the CMA desktop clients cannot Auto Register with any of the CMA Servers. This is after creating a DNS Service Entry for them. The string we used is this:
__cmaconfig._tcp.nlng.net 86400 IN SRV 0 0 443 NLNGVCCMA001.nlng.net
where NLNGVCCMA001 is the server's DNS name.
Is there any issue with the string?
Kindly assist.
Best Regards
Ismail
08-21-2013 12:40 AM
See my original reply to the topic starter.
Two __ underscore instead of _ one.
Best regards
Steffen Baier
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.
Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN
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