210-065 · Question #65
You have been informed from the field that a new Cisco TelePresence video endpoint has been deployed with an IPv4 address of 172.28.254.45. You need to check for connectivity from the Cisco Unified…
The correct answer is B. utils network ping 172.28.254.45. On Cisco Unified Communications Manager, the correct CLI syntax for testing network connectivity to an IP address uses the 'utils network ping' command, which is required on the hardened CUCM appliance.
Question
You have been informed from the field that a new Cisco TelePresence video endpoint has been deployed with an IPv4 address of 172.28.254.45. You need to check for connectivity from the Cisco Unified Communications Manager server. Which command should be entered to check for network connectivity?
Options
- Autils network traceroute newsystem.domain254.local
- Butils network ping 172.28.254.45
- Cping 172.28.254.45
- Dtraceroute 172.28.255.255
- Eutils network host cucm.osl147.local
How the community answered
(32 responses)- A3% (1)
- B75% (24)
- C3% (1)
- D6% (2)
- E13% (4)
Why each option
On Cisco Unified Communications Manager, the correct CLI syntax for testing network connectivity to an IP address uses the 'utils network ping' command, which is required on the hardened CUCM appliance.
This command uses traceroute with a hostname rather than the target endpoint's IP address, so it does not verify connectivity to the specific TelePresence device at 172.28.254.45.
CUCM runs on a hardened Linux appliance that restricts direct OS commands, so all network diagnostics must go through the 'utils network' CLI namespace. The command 'utils network ping 172.28.254.45' is the correct syntax to send ICMP echo requests from the CUCM server to the specified endpoint and verify layer-3 connectivity.
Entering 'ping' directly is a standard OS command that is blocked in the CUCM restricted CLI; CUCM requires the 'utils network' prefix for all network diagnostic commands.
172.28.255.255 is a directed broadcast address, not the unicast address of the endpoint, so traceroute to this address would not confirm connectivity to the specific TelePresence device.
'utils network host' performs DNS hostname resolution and does not test ICMP or network-layer connectivity to a host.
Concept tested: CUCM CLI utils network ping command for connectivity testing
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/cli_ref/14_0_1/cucm_b_cli-reference-guide-1401.html
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