Ccna routing and Switching Complete Study Guide

switchport trunk native vlan 392

S2(config-if)#

^Z

S2#

sh int trunk

 

Port        Mode         Encapsulation  Status     Native vlan

Gi0/13      desirable    n-802.1q       trunking      392

Gi0/14      desirable    n-802.1q       trunking      1

[output cut]

All better! Both sides of the same link between switches are now using native VLAN 

392 on Gigabit Ethernet 0/13. I want you to know that it’s fine to have different native 

VLANs for each link if that’s what works best for you. Each network is different and you 

have to make choices between options that will end up meeting your particular business 

requirements the most optimal way.

Summary

This chapter covered troubleshooting techniques from basic to advanced. Although most 

chapters in this book cover troubleshooting, this chapter focused purely on IPv4, IPv6, and 

VLAN/trunk troubleshooting.

You learned how to troubleshoot step-by-step from a host to a remote device. Starting 

with IPv4, you learned the steps to test the host and the local connectivity and then how to 

troubleshoot remote connectivity.

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Written Lab 20 

875

We then moved on to IPv6 and proceeded to troubleshoot using the same techniques 

that you learned with IPv4. It’s important that you can use the verification commands that 

I used in each step of this chapter.

Last, I covered VLAN and trunk troubleshooting and how to go step-by-step through a 

switched network using verification commands and narrowing down the problem.

Exam Essentials