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210-065 · Question #15

What is the importance of defining option 150 in the DHCP server for Cisco TelePresence endpoints?

The correct answer is B. It is the TFTP server IPv4 address where the video endpoint retrieves its configuration file. DHCP option 150 provides the TFTP server IPv4 address to Cisco TelePresence endpoints so they can automatically retrieve their configuration files during provisioning.

Endpoint Configuration

Question

What is the importance of defining option 150 in the DHCP server for Cisco TelePresence endpoints?

Options

  • AOption 150 is not important.
  • BIt is the TFTP server IPv4 address where the video endpoint retrieves its configuration file
  • CIt is the IPv4 address of the default gateway for the subnet that the video endpoint is
  • DIt is the configured SIP registrar and proxy server.
  • EIt is the unique NTP server IPv4 address.

How the community answered

(28 responses)
  • A
    7% (2)
  • B
    89% (25)
  • C
    4% (1)

Why each option

DHCP option 150 provides the TFTP server IPv4 address to Cisco TelePresence endpoints so they can automatically retrieve their configuration files during provisioning.

AOption 150 is not important.

Option 150 is a well-defined Cisco DHCP option with a specific provisioning function and is critical for automatic configuration delivery to TelePresence endpoints.

BIt is the TFTP server IPv4 address where the video endpoint retrieves its configuration fileCorrect

DHCP option 150 is a Cisco-proprietary option that specifies the IP address of the TFTP server from which Cisco TelePresence and IP Phone endpoints download their configuration and firmware files. This enables zero-touch provisioning without requiring manual TFTP server entry on each device.

CIt is the IPv4 address of the default gateway for the subnet that the video endpoint is

The default gateway address is conveyed by standard DHCP option 3, not option 150.

DIt is the configured SIP registrar and proxy server.

The SIP registrar and proxy server address is a SIP configuration parameter and is not delivered via DHCP option 150.

EIt is the unique NTP server IPv4 address.

The NTP server IPv4 address is provided by DHCP option 42, not option 150.

Concept tested: DHCP option 150 TFTP server for TelePresence provisioning

Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/10_0_1/ccmcfg/CUCM_BK_C95ABA82_00_cucm-administration-guide-100/CUCM_BK_C95ABA82_00_cucm-administration-guide-100_chapter_0100011.html

Topics

#DHCP option 150#TFTP server#endpoint provisioning#network services

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