Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements
Webcast-Catalyst9k
New Member

MAC address learning

On various switches I have devices connected to, some of the ports never seem to learn the mac-address of the connected device. Anyone have an explanation or fix for why this randomly happens?

1 REPLY

Re: MAC address learning

Hi Friend,

The switch will not learn a mac address till the time device connected to it send some request out from its source mac address.

Like a workstation if you connect to it and your pc is in hut state the switch will not learn a mac address.

Incase you power your pc up it will sned a broadcats ofr arp entry and that time switch will learn a mac address because now pc has send some request with its mac address.

So just check which all devices connected to the switch for which it does not learn mac address are those devices active and up in the network.

HTH, if yes please rate the post.

Ankur

165
Views
0
Helpful
1
Replies
CreatePlease to create content