210-060 · Question #334
On the Cisco VCS-E, what is the default port number for the H.323 connection on the first traversal zone between a Cisco VCS-C and Cisco VCS-E?
The correct answer is D. 6001. The Cisco VCS uses a proprietary port scheme for H.323 traversal connections between VCS-Control and VCS-Expressway. Port 6001 is the default H.323 connection port for the first traversal zone.
Question
On the Cisco VCS-E, what is the default port number for the H.323 connection on the first traversal zone between a Cisco VCS-C and Cisco VCS-E?
Options
- A1719
- B1720
- C5060
- D6001
How the community answered
(50 responses)- A2% (1)
- B8% (4)
- C2% (1)
- D88% (44)
Why each option
The Cisco VCS uses a proprietary port scheme for H.323 traversal connections between VCS-Control and VCS-Expressway. Port 6001 is the default H.323 connection port for the first traversal zone.
Port 1719 is the standard H.323 RAS port used for gatekeeper registration and bandwidth management, not for VCS inter-zone traversal connections.
Port 1720 is the standard H.323 Q.931 call signaling port used for direct peer H.323 calls and is not used for Cisco VCS traversal zone connections.
Port 5060 is the standard SIP signaling port over UDP and TCP and has no role in H.323 traversal zone connectivity between VCS-C and VCS-E.
Port 6001 is the default H.323 port assigned to the first traversal zone connection between a Cisco VCS-Control and VCS-Expressway pair. Cisco VCS assigns sequential ports starting at 6001 for each configured traversal zone, which deliberately differs from the standard public H.323 signaling ports to avoid conflict and to identify traversal traffic.
Concept tested: Cisco VCS traversal zone default H.323 port assignment
Source: https://www.cisco.com/c/en/us/td/docs/telepresence/infrastructure/vcs/config_guide/X8-11/Cisco-VCS-Administrator-Guide-X8-11.html
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