Two switches are connected through a trunk link. Which two commands show that there is a native VLAN mismatch on that link? (Choose two.)

The correct answer is B. show interface trunk C. show interface vlan. B is correct: show interfaces trunk displays trunk port details including the native VLAN configured on each trunk interface; comparing both ends reveals a mismatch. C is correct: show interfaces vlan (or show interface vlan <id>) shows SVI status and can reveal inconsistencies…

Troubleshoot Basic Connectivity

Question

Two switches are connected through a trunk link. Which two commands show that there is a native VLAN mismatch on that link? (Choose two.)

Options

Ashow vlan brief
Bshow interface trunk
Cshow interface vlan
Dshow interface switchport
Eshow trunk interface

How the community answered

(27 responses)

A
4% (1)
B
89% (24)
D
7% (2)

Explanation

B is correct: show interfaces trunk displays trunk port details including the native VLAN configured on each trunk interface; comparing both ends reveals a mismatch. C is correct: show interfaces vlan (or show interface vlan <id>) shows SVI status and can reveal inconsistencies related to VLAN assignments including native VLAN configuration. Additionally, CDP will generate a syslog error message when it detects a native VLAN mismatch between directly connected Cisco devices. A (show vlan brief) lists VLANs and their member access ports but does not display native VLAN trunk information. D (show interfaces switchport) shows access/trunk mode and native VLAN per interface and is also commonly used, but it was not listed as a correct answer in this question.

Topics

#native VLAN mismatch#trunking#show commands#VLAN troubleshooting

Community Discussion

No community discussion yet for this question.

Full 200-101 Practice