Which entry in the public (external) DNS is valid to configure DNS SRV records for a Cisco Mobile and Remote Access solution?

The correct answer is C. _collab-edge._tls.<domain>. When a Cisco Jabber or compatible client is outside the enterprise and needs to discover the Expressway-E for Mobile and Remote Access, it performs a DNS SRV lookup using the record _collab-edge._tls.<domain>. This is the industry-standard and Cisco-defined SRV record that…

Mobile and Remote Access

Question

Options

A_cisco-uds._tcp.<domain>
B_cisco-mra._tls.<domain>
C_collab-edge._tls.<domain>
D_cisco-expwy._tls.<domain>

How the community answered

(39 responses)

B
3% (1)
C
95% (37)
D
3% (1)

Explanation

When a Cisco Jabber or compatible client is outside the enterprise and needs to discover the Expressway-E for Mobile and Remote Access, it performs a DNS SRV lookup using the record _collab-edge._tls.<domain>. This is the industry-standard and Cisco-defined SRV record that tells the client where the Expressway-E is located and which port to use for TLS connections. Option A (_cisco-uds._tcp) is used internally for Unified Domain Services discovery. Option B (_cisco-mra._tls) does not exist as a valid MRA SRV record. Option D (_cisco-expwy._tls) is also not a valid, defined SRV record in the MRA specification.

Topics

#DNS SRV records#Mobile and Remote Access#Cisco Expressway#Collaboration Edge

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