cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
6934
Views
0
Helpful
2
Replies

show mac address-table output and and trunk port

sarahr202
Level 5
Level 5

Hi every body!

i am just curious if a switch has f0/1 as trunk, and i use the command " show mac address-table", how it will appear in the output.

Thanks and have a nice weekend !

1 Accepted Solution

Accepted Solutions

Edison Ortiz
Hall of Fame
Hall of Fame

It will list every single mac-address that transits the switchport for each Vlan.

Here is a sample of a switch that has a trunk port

#sh mac address-table | i Fa0/1

1 000d.bd28.428d DYNAMIC Fa0/1

1 000d.bd28.428e DYNAMIC Fa0/1

18 000d.bd28.428e DYNAMIC Fa0/1

5 000d.bd28.428e DYNAMIC Fa0/1

7 000d.bd28.428e DYNAMIC Fa0/1

26 000d.bd28.428e DYNAMIC Fa0/1

26 0011.20b5.f520 DYNAMIC Fa0/1

26 0013.606c.b201 DYNAMIC Fa0/1

47 000d.bd28.428e DYNAMIC Fa0/1

47 000f.f7c7.6740 DYNAMIC Fa0/1

62 000d.bd28.428e DYNAMIC Fa0/1

62 000f.f7c4.1100 DYNAMIC Fa0/1

62 0013.606c.b200 DYNAMIC Fa0/1

55 000d.bd28.428e DYNAMIC Fa0/1

55 0013.7f8e.a121 DYNAMIC Fa0/1

43 0004.9af8.9500 DYNAMIC Fa0/1

43 000d.bd28.428e DYNAMIC Fa0/1

43 001c.0e8d.48c2 DYNAMIC Fa0/1

3 000d.bd28.428e DYNAMIC Fa0/1

3 0013.7fae.fc21 DYNAMIC Fa0/1

The first column is the Vlan #

The Second column is the mac-address

The third column is the type

The fourth column is the port

View solution in original post

2 Replies 2

Edison Ortiz
Hall of Fame
Hall of Fame

It will list every single mac-address that transits the switchport for each Vlan.

Here is a sample of a switch that has a trunk port

#sh mac address-table | i Fa0/1

1 000d.bd28.428d DYNAMIC Fa0/1

1 000d.bd28.428e DYNAMIC Fa0/1

18 000d.bd28.428e DYNAMIC Fa0/1

5 000d.bd28.428e DYNAMIC Fa0/1

7 000d.bd28.428e DYNAMIC Fa0/1

26 000d.bd28.428e DYNAMIC Fa0/1

26 0011.20b5.f520 DYNAMIC Fa0/1

26 0013.606c.b201 DYNAMIC Fa0/1

47 000d.bd28.428e DYNAMIC Fa0/1

47 000f.f7c7.6740 DYNAMIC Fa0/1

62 000d.bd28.428e DYNAMIC Fa0/1

62 000f.f7c4.1100 DYNAMIC Fa0/1

62 0013.606c.b200 DYNAMIC Fa0/1

55 000d.bd28.428e DYNAMIC Fa0/1

55 0013.7f8e.a121 DYNAMIC Fa0/1

43 0004.9af8.9500 DYNAMIC Fa0/1

43 000d.bd28.428e DYNAMIC Fa0/1

43 001c.0e8d.48c2 DYNAMIC Fa0/1

3 000d.bd28.428e DYNAMIC Fa0/1

3 0013.7fae.fc21 DYNAMIC Fa0/1

The first column is the Vlan #

The Second column is the mac-address

The third column is the type

The fourth column is the port

I have noticed that the same MAC addresses appear for different VLANs, for example, 000d.bd28.428d. Why is that?

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Review Cisco Networking products for a $25 gift card