InformaCast Fusion uses DNS SRV records for service discovery of IP speakers, the Desktop Notifier, and the Paging Gateway. [1, 2]
How DNS SRV works with InformaCast [3]
• IP speakers use DNS SRV to locate the InformaCast resource directory. [3]
• The Desktop Notifier uses DNS SRV to auto-discover InformaCast and download its configuration file. [2]
• The Paging Gateway uses DNS SRV to discover the service of the InformaCast server. [1]
How to check DNS SRV records [2]
• On Windows, use the nslookup command to check DNS SRV records.
• On Mac or Linux, use the host command to check DNS SRV records.
How to troubleshoot DNS issues [4, 5, 6]
• If you're having trouble with DNS, you can try these steps:
1. Log into the InformaCast CLI and run the configure-network command.
2. Adjust the DNS server references to valid DNS servers.
3. Perform a DNS PTR record lookup for the IP addresses of the DNS servers.
4. Ensure that your DNS infrastructure supports EDNS.
DNS SRV support [3]
Not all speaker manufacturers support DNS SRV. You can check your vendor's firmware documentation for support. [3]