Ccna routing and Switching Complete Study Guide

sh interfaces gi0/3 switchport

Name: Gi0/3

Switchport: Enabled

Administrative Mode: dynamic desirable

Operational Mode: static access

Administrative Trunking Encapsulation: negotiate

Operational Trunking Encapsulation: native

Negotiation of Trunking: On

Access Mode VLAN: 10 (Inactive)

Trunking Native Mode VLAN: 1 (default)

[output cut]

Okay—we can see that the port is enabled and that it’s set to dynamic desirable. 

This means that if it connects to another Cisco switch, it will desire to trunk on that 

link. But keep in mind that we’re using it as an access port, which is confirmed by the 

operational mode of static access. At the end of the output, the text shows 

Access Mode 

VLAN: 10 (Inactive)

. This is not a good thing! Let’s examine S2’s CAM and see what 

we find out:

S2#