switches and mac addresses for different vlans

Unanswered Question
Apr 7th, 2008

Hi all, if I ping a device on another subnet that is connected to my distribution switch, will my switch learn the mac address of the device in the other subnet along the trunk link? I assume it will not ?

I have this problem too.
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carl_townshend Tue, 04/08/2008 - 00:32

can anyone help here at all?

just to add, I mean the trunk link from my switch to the distribution switch, which is not a member of the vlan on the other side.


mahmoodmkl Tue, 04/08/2008 - 02:49


It depends upon u r toplogy .ie how u r doing u r intervlan routing usually the mac address will be learned on the trunk links.



carl_townshend Wed, 04/09/2008 - 03:31

the vlans are seperated by the dist switch, the vlan for that side only exsist on the trunk link needed. ie vlan 2 on one side, vlan 3 on the other,

if im right vlan 2 mac addresses should not be on trunk or switches on vlan 3, is this correct ?

ciscograyaw Wed, 04/09/2008 - 12:04

No, devices in one VLAN will not learn the MAC addresses in another VLAN, since to cross VLANs they have to be routed.


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