Which type of SRV record provides the location of Cisco Expressway-E?

The correct answer is A. _collab-edge._tls.example.com. The _collab-edge._tls.<domain> SRV DNS record is specifically used for Mobile and Remote Access (MRA) service discovery. External Jabber clients (outside the corporate network) query this SRV record to discover the Cisco Expressway-E server, which acts as the firewall traversal…

Application Clients

Question

Options

A_collab-edge._tls.example.com
B_cisco-uds._tcp.example.com
C_cuplogin._tcp.example.com
D_http._tcp.example.com

How the community answered

(31 responses)

A
94% (29)
B
3% (1)
D
3% (1)

Explanation

The _collab-edge._tls.<domain> SRV DNS record is specifically used for Mobile and Remote Access (MRA) service discovery. External Jabber clients (outside the corporate network) query this SRV record to discover the Cisco Expressway-E server, which acts as the firewall traversal proxy for remote collaboration services. The '_tls' suffix indicates that the connection is secured via TLS on port 8443. Option B (_cisco-uds._tcp) is used for on-premises CUCM User Data Services discovery. Option C (_cuplogin._tcp) is used for Cisco Unified Presence login. Option D (_http._tcp) is a generic HTTP SRV record and is not used for Cisco collaboration service discovery.

Topics

#SRV records#DNS#Cisco Expressway-E#Mobile and Remote Access (MRA)

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