Looking to verify the status of a voice VLAN on a Cisco switch? Discover how the “show voice vlan” command provides detailed voice VLAN information—essential for Cisco Certified Field Technician (CCT) exam preparation.
Table of Contents
Question
What command is used to check the status of a voice VLAN on a Cisco switch?
A. show run
B. show ip interface brief
C. show voice vlan
D. show vlan brief
E. show arp
Answer
D. show vlan brief
Explanation
The show vlan brief command displays VLAN assignments, including voice VLANs used for Cisco IP phones.
The most direct command to check the status of a voice VLAN on a Cisco switch is:
show voice vlan
This command displays the current voice VLAN configuration, including the voice VLAN ID, operational state, and the interfaces associated with the voice VLAN. It provides details such as the best local voice VLAN, DSCP values, and which ports are configured for voice traffic. Using this command without parameters shows the general voice VLAN status; additional options can display detailed information for specific ports or VLAN types.
- show voice vlan reveals the voice VLAN state (enabled/disabled), the VLAN ID used for voice, and which interfaces are assigned to carry voice traffic.
- For more granular port-specific information, use show interfaces interface-id switchport to see both access and voice VLAN assignments.
- While show vlan brief lists all VLANs and their associated ports, it does not specifically indicate which VLAN is configured as the voice VLAN.
The show voice vlan command is designed specifically to display the status and configuration of voice VLANs, making it the most accurate tool for verifying voice VLAN settings on Cisco switches.
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.