300-435 Question 140
Single answerYou are deploying a new branch office network and are utilizing Cisco's Zero Touch Provisioning (ZTP) solution to automate the configuration process of multiple Catalyst switches. During the deployment, you notice that one of the switches is not obtaining its configuration files from the ZTP server. Upon investigation, you discover that the switch is not communicating with the ZTP server. Which of the following actions should you take to resolve the issue?
- A
Verify that the DHCP server is providing the correct Option 67 parameter for the ZTP configuration file.
- B
Ensure that the switch has the correct static IP address configured.
- C
Check that the ZTP server is reachable and the configuration file is present in the specified location.
- D
Confirm that the switch has the correct firmware version that supports ZTP.
Show answer and explanation
Correct answer: A
Explanation
In Cisco's ZTP process, DHCP plays a critical role by providing the switch with an IP address and additional parameters, such as the Option 67 boot file name or configuration file location. A misconfigured or missing DHCP Option 67 parameter is a common cause of ZTP failures, as it prevents the switch from obtaining the required configuration file from the ZTP server. Verifying and correcting this parameter is the most appropriate action to resolve the issue.
- A. Correct.
Correct: ZTP relies on DHCP for initial configuration. Option 67 specifies the boot file name or configuration file location, which the switch uses to obtain its configuration. If this is incorrect or missing, ZTP will fail.
- B. Incorrect.
Incorrect: ZTP typically does not require a static IP address to function, as it relies on DHCP for IP allocation and bootstrapping. Configuring a static IP bypasses the ZTP process.
- C. Incorrect.
Incorrect: While ensuring the ZTP server is reachable is important, this is not the first step to troubleshoot the issue. If the DHCP Option 67 is incorrect, the switch will not attempt to contact the server.
- D. Incorrect.
Incorrect: Although an incompatible firmware version can cause ZTP to fail, this is less likely the issue compared to DHCP misconfigurations. ZTP generally works with most factory-default firmware versions.