300-820 · Question #215
What is the benefit of configuring ICE, TURN and STUN in a Cisco Unified Collaboration environment?
The correct answer is D. The endpoints discover paths to optimize media flow and allows for peer-to-peer media traffic in. ICE (Interactive Connectivity Establishment) works in conjunction with STUN (Session Traversal Utilities for NAT) and TURN (Traversal Using Relays around NAT) to gather and test multiple network path candidates between endpoints. ICE discovers host addresses, server-reflexive…
Question
What is the benefit of configuring ICE, TURN and STUN in a Cisco Unified Collaboration environment?
Options
- AThe ICE protocol enables the use of MRA for Cisco endpoints to register behind the firewall.
- BThe endpoints use fewer ports to minimize the port range and allows for multiple connections in a
- CIt can traverse firewalls without opening incoming ports.
- DThe endpoints discover paths to optimize media flow and allows for peer-to-peer media traffic in
How the community answered
(52 responses)- A6% (3)
- B2% (1)
- C4% (2)
- D88% (46)
Explanation
ICE (Interactive Connectivity Establishment) works in conjunction with STUN (Session Traversal Utilities for NAT) and TURN (Traversal Using Relays around NAT) to gather and test multiple network path candidates between endpoints. ICE discovers host addresses, server-reflexive (NAT-translated) addresses via STUN, and relayed addresses via TURN, then performs connectivity checks to determine the optimal media path. This enables peer-to-peer media traffic when possible, reducing latency and server load. TURN relay is only used as a last resort. This directly optimizes media flow rather than merely opening ports or enabling MRA registration.
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