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300-820 · Question #114

An administrator is configuring DNS to allow Mobile and Remote Access logins for the domain cisco.com. Where must the _collab-edge_tls.cisco.com DNS SRV record be configured?

The correct answer is A. in the public DNS server. The _collab-edge._tls.<domain> DNS SRV record is used by external Cisco Jabber clients to automatically discover the Expressway-E for Mobile and Remote Access (MRA). Because MRA users are outside the corporate network, they rely on public DNS to locate the edge server. Placing…

Mobile and Remote Access

Question

An administrator is configuring DNS to allow Mobile and Remote Access logins for the domain cisco.com. Where must the _collab-edge_tls.cisco.com DNS SRV record be configured?

Options

  • Ain the public DNS server
  • Bin DNS SRV settings under Cisco Unified OS Administration in Cisco UCM
  • Cin DNS settings in the Expressway-E on the interface that faces the Internet
  • Din DNS settings under Cisco Unified OS Administration in Cisco UCM

How the community answered

(29 responses)
  • A
    90% (26)
  • C
    7% (2)
  • D
    3% (1)

Explanation

The _collab-edge._tls.<domain> DNS SRV record is used by external Cisco Jabber clients to automatically discover the Expressway-E for Mobile and Remote Access (MRA). Because MRA users are outside the corporate network, they rely on public DNS to locate the edge server. Placing this record anywhere other than the public DNS (e.g., internal UCM settings or Expressway-E interface settings) would make it unreachable to external clients.

Topics

#Mobile and Remote Access#DNS SRV#Expressway-E#Public DNS

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