Which DNS record is used for on-premises service by Jabber clients?

The correct answer is C. _cisco-uds._tcp.<domain> SRV record. The _cisco-uds._tcp.<domain> SRV record is the DNS record Jabber uses for on-premises (internal network) automatic service discovery. It points to the CUCM server(s) running the User Data Services (UDS) API, which provides Jabber with user credentials validation, home cluster ide

Application Clients

Question

Options

A_collab-edge._tcp.<domain> SRV record
B_cisco-uds._tls.<domain> SRV record
C_cisco-uds._tcp.<domain> SRV record
D<tftp server FQDN> A record

How the community answered

(15 responses)

A
7% (1)
C
93% (14)

Explanation

The _cisco-uds._tcp.<domain> SRV record is the DNS record Jabber uses for on-premises (internal network) automatic service discovery. It points to the CUCM server(s) running the User Data Services (UDS) API, which provides Jabber with user credentials validation, home cluster identification, and device configuration during login. Option A (_collab-edge._tcp) is used for external MRA (Mobile and Remote Access) discovery via Expressway-E - and notably uses _tls not _tcp. Option B (_cisco-uds._tls) does not exist as a standard Cisco SRV record; UDS uses TCP not TLS for its SRV designation. Option D (a TFTP server A record) is used for IP phone firmware/config file retrieval, not Jabber service discovery.

Topics

#Jabber#DNS SRV#Service Discovery#On-premises

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