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

Question

Options

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

• A
  3% (1)
• B
  10% (3)
• C
  17% (5)
• D
  70% (21)

Explanation

Cisco TMS communicates with Expressway (and VCS) using SNMP for device management and status. (D) If SNMP is not enabled on Cisco Expressway, TMS cannot query or manage the device, causing the addition to fail. (E) SNMP uses UDP port 161; if this port is blocked by a firewall or ACL between TMS and Expressway, SNMP communication fails entirely. (F) The management address configured on Cisco VCS/Expressway must match the IP address that TMS uses to reach it; a mismatch causes TMS to be unable to authenticate or correlate the device identity, resulting in failure. TMS version 12.5 compatibility (A/B) and time synchronization (C) can cause issues in other contexts but are not the primary causes of device addition failure in this scenario.

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