Ccna routing and Switching Complete Study Guide

10    001a.2f55.c9e8    DYNAMIC     Gi0/1

  

10    001b.d40a.0538    DYNAMIC     Gi0/2

Total Mac Addresses for this criterion: 29

Okay—know that your switch will show quite a few MAC addresses assigned to the 

CPU at the top of the output; those MAC addresses are used by the switch to manage the 

ports. The very first MAC address listed is the base MAC address of the switch and used 

by STP in the bridge ID. In the preceding output, we can see that there are two MAC 

addresses associated with VLAN 10 and that it was dynamically learned. We can also 

establish that this MAC address is associated to Gi0/1. S1 looks really good!

Let’s take a look at S2 now. First, let’s confirm that port PC3 is connected and check its 

configuration. I’ll use the 

show interfaces 

interface switchport

 command to do that:

S2#