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300-085 · Question #113

You are trying to add Cisco VCS to Cisco TMS, but the addition is failing. Which three scenarios might be causing this failure? (Choose three.)

The correct answer is D. SNMP is not enabled on Cisco VCS. E. UDP port 161 is blocked on the network. F. The management address on Cisco VCS does not match the Cisco TMS IP address. Adding Cisco VCS to Cisco TMS requires SNMP to be enabled on VCS and reachable on UDP 161, and the management address on VCS must correctly reference the TMS IP.

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Question

You are trying to add Cisco VCS to Cisco TMS, but the addition is failing. Which three scenarios might be causing this failure? (Choose three.)

Options

  • ACisco TMS is running a version earlier than 12.5.
  • BCisco TMS was not upgraded before adding Cisco VCS.
  • CCisco TMS and Cisco VCS do not have synchronized time settings.
  • DSNMP is not enabled on Cisco VCS.
  • EUDP port 161 is blocked on the network.
  • FThe management address on Cisco VCS does not match the Cisco TMS IP address.

How the community answered

(39 responses)
  • A
    8% (3)
  • B
    5% (2)
  • C
    15% (6)
  • D
    72% (28)

Why each option

Adding Cisco VCS to Cisco TMS requires SNMP to be enabled on VCS and reachable on UDP 161, and the management address on VCS must correctly reference the TMS IP.

ACisco TMS is running a version earlier than 12.5.

The specific version threshold of 12.5 is not the documented minimum requirement for VCS support in TMS; version compatibility alone does not describe this failure scenario.

BCisco TMS was not upgraded before adding Cisco VCS.

While TMS should generally be upgraded before adding new devices, the failure described is not caused by upgrade sequence but by SNMP and addressing misconfigurations.

CCisco TMS and Cisco VCS do not have synchronized time settings.

Time synchronization affects certificate validation and logging but is not a documented direct cause of TMS failing to add a VCS device.

DSNMP is not enabled on Cisco VCS.Correct

Cisco TMS relies on SNMP to discover and manage Cisco VCS; if SNMP is not enabled on the VCS, TMS cannot query it and the addition will fail.

EUDP port 161 is blocked on the network.Correct

SNMP uses UDP port 161 for polling; if this port is blocked by a firewall or ACL between TMS and VCS, the SNMP queries cannot reach VCS, preventing successful addition.

FThe management address on Cisco VCS does not match the Cisco TMS IP address.Correct

The management address configured on Cisco VCS tells the device which system is allowed to manage it; if that address does not match the actual TMS IP, TMS management requests will be rejected.

Concept tested: Cisco TMS and VCS SNMP management integration

Source: https://www.cisco.com/c/en/us/support/unified-communications/telepresence-management-suite-tms/products-installation-guides-list.html

Topics

#VCS TMS integration#SNMP#TMS troubleshooting#management address

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