350-801 · Question #360
An administrator is troubleshooting an issue where an 8845 is not joining the correct voice VLAN configuration from a switch and they believe that LLDP is the issue. Which command allows the…
The correct answer is B. show lldp traffic. To troubleshoot LLDP issues between a Cisco IP phone and a switch, an administrator needs to examine the LLDP packet counters and statistics on the switch. This provides insights into the communication status.
Question
An administrator is troubleshooting an issue where an 8845 is not joining the correct voice VLAN configuration from a switch and they believe that LLDP is the issue. Which command allows the administrator to see the packets sent from the phone to the switch?
Options
- Ashow lldp status <interface>
- Bshow lldp traffic
- Cshow lldp
- Dshow lldp run
How the community answered
(12 responses)- B92% (11)
- C8% (1)
Why each option
To troubleshoot LLDP issues between a Cisco IP phone and a switch, an administrator needs to examine the LLDP packet counters and statistics on the switch. This provides insights into the communication status.
'show lldp status <interface>' typically shows the LLDP status (enabled/disabled) on a specific interface, not detailed packet statistics.
The 'show lldp traffic' command on a Cisco switch displays detailed statistics about LLDP packets, including counts of transmitted, received, and dropped packets, which is crucial for troubleshooting LLDP communication issues with devices like IP phones.
'show lldp' provides a summary of LLDP neighbors and local interface LLDP capabilities, but not the specific packet counters for traffic.
'show lldp run' is not a valid Cisco IOS command for displaying LLDP traffic information.
Concept tested: Cisco IOS LLDP troubleshooting commands
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/cether/command/ce-cr-rel122-33-srcd/ce-cr-s3-chap1.html#wp4600673
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