300-810 · Question #46
Refer to the exhibit. Users connected to the internal network report a "Cannot communicate with the server" error while trying to log in to Cisco Jabber using auto service discovery. The Jabber…
The correct answer is C. The port specified on the SRV record is wrong. For Cisco Jabber auto service discovery via SRV records, the SRV record for _cisco-uds._tcp (or _cuplogin._tcp) must point to port 8443 on the CUCM publisher. If an incorrect port (e.g., 443 or 80) is specified, Jabber will resolve the hostname correctly but fail to establish…
Question
Refer to the exhibit. Users connected to the internal network report a "Cannot communicate with the server" error while trying to log in to Cisco Jabber using auto service discovery. The Jabber diagnostics and the SRV record configuration are as shown in the exhibit. The host cucm1.ccnp.cisco.com is correctly resolved by the user desktops with the Cisco Unified Communications Manager IP address. Why is the user not able to log in?
Exhibit
Options
- ASRV protocol is not set up correctly. It should be _tls instead of _tcp.
- BMarking weight as 0 on the SRV record makes it inactive, so Jabber cannot discover the Cisco
- CThe port specified on the SRV record is wrong.
- DThe domain ccnp.cisco.com does not exist on the DNS server.
How the community answered
(33 responses)- A9% (3)
- B6% (2)
- C82% (27)
- D3% (1)
Explanation
For Cisco Jabber auto service discovery via SRV records, the SRV record for _cisco-uds._tcp (or _cuplogin._tcp) must point to port 8443 on the CUCM publisher. If an incorrect port (e.g., 443 or 80) is specified, Jabber will resolve the hostname correctly but fail to establish the connection, producing a 'Cannot communicate with the server' error. Since the hostname resolves correctly (cucm1.ccnp.cisco.com resolves to the correct IP), DNS is not the issue (eliminating D). The protocol _tcp is correct for this SRV record type (eliminating A). A weight of 0 is valid and simply means equal preference among records with the same priority (eliminating B).
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