This document explains how to verify the Cisco Jabber DNS SRV configuration.
How to verify the Cisco Jabber DNS SRV configuration?
"NSLOOKUP" can be used to verify that the SRV records are correctly configured. This is particular important in environment where DNS configuration is handled by different organizational entities. Best use the NSLOOKUP from one of the Windows 7 PC to verify they can correctly resolve the SRV.
By default, the NSLOOKUP tool queries either DNS A records - mapping a name to an IP address or PTR records mapping IP address to DNS names. To use the tool to check SRV records,
First start nslookup (on a windows client ) start the command prompt and then enter nslookup
Next set the query type to SRV -> set type = SRV
After that insert the SRV record we need to check -> _cisco-uds._tcp.example.com
This will return the DNS A records pointing to the CUCM servers.
The following is an example of the _cisco-uds SRV record: _cisco-uds._tcp.example.com SRV service location: priority = 6 weight = 30 port = 8443 svr hostname = cucm3.example.com
_cisco-uds._tcp.example.com SRV service location: priority = 2 weight = 20 port = 8443 svr hostname = cucm2.example.com
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