Cisco IP phone stuck on “Configuring IP”? Find out why DHCP server availability is crucial and how to resolve this common issue for the Cisco Certified Field Technician (CCT) exam.
Table of Contents
Question
A Cisco IP phone is displaying “Configuring IP.” What is the most likely reason?
A. DHCP server is unavailable
B. PoE is disabled on the switch
C. The phone has a faulty display
D. The phone is in factory reset mode
E. The switch is set to trunk mode
Answer
A. DHCP server is unavailable
Explanation
Cisco IP phones rely on DHCP to obtain an IP address. If the phone is stuck on “Configuring IP,” the DHCP server should be checked.
The most likely reason a Cisco IP phone displays “Configuring IP” is that the DHCP server is unavailable or not responding to the phone’s request for an IP address. When the phone boots up, it sends a DHCP request to obtain network configuration details, including its IP address, subnet mask, default gateway, and TFTP server information. If the DHCP server is unreachable, misconfigured, or out of available addresses, the phone cannot proceed past the “Configuring IP” stage.
Supporting Details:
- The “Configuring IP” message indicates the phone is waiting for a DHCP response.
- Common causes include DHCP server being offline, no available IP addresses in the DHCP scope, or network misconfigurations preventing the phone from reaching the DHCP server.
- Ensuring the DHCP server is operational, has available addresses, and that the correct VLAN and network settings are configured will typically resolve the issue.
Cisco IP phones rely on DHCP to obtain their IP configuration. If the DHCP server cannot be reached or does not respond, the phone remains stuck at “Configuring IP” and cannot complete the boot process.
Cisco Certified Field Technician (CCT) certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Cisco Certified Field Technician (CCT) exam and earn Cisco Certified Field Technician (CCT) certification.