show mac address-table output and and trunk port

Answered Question
Jul 22nd, 2009

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 !

I have this problem too.
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Correct Answer by Edison Ortiz about 7 years 6 months ago

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

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Correct Answer
Edison Ortiz Fri, 07/24/2009 - 09:41

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

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