[VLAN] vlan & osi-model

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Vishwas Manral wrote:
> Hi Lars,
> 
> Hmmm....let me explain then.;-) The way a switch can assign VLAN's is upto the administrator's discretion (we can as well have it based on a particular application - layer-7 or any other criteria). However VLAN is a layer-2 thing. Maybe someone else too can join in?
> 
> A port based VLAN means that in case a packet comes in untagged the VLAN assigned to the packet in a VLAN aware switch is that of the default VLAN Id of the port. In a Mac-based VLAN certain Mac Addresses are assigned to the same Vlan. As far as I know we have support for Mac-Based VLAN in Linux, though I know some flavors do support Port-Based too. 
> 
> Thanks,
> Vishwas

The Linux MAC-VLAN stuff is not in the official kernel, but I have done fairly
extensive testing on the mode that matches on the destination MAC.  I have not
tested the mode that matches on the source MAC but it worked at one time, at least.

Port-based VLANs mean nothing unless you are bridging, and Linux already supports
bridging regular ethernet interfaces and 802.1Q VLANs, so this is supported
as well.

Bridging between MAC-VLAN interfaces does not make sense to me, so I think this
probably doesn't work in any useful manner.

Ben

-- 
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc  http://www.candelatech.com


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