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Posted by Walter Roberson on June 23, 2008, 1:30 am
> can any body plz tell or explain me that :
> Is it possible that at a single port of a L 2 switch there may be
>multiple vlans, and if yes then please tell also a situation.
I don't see the difference between this question and ones you
asked about two or three weeks ago.
YES, a single port of a layer 2 switch may be a member of several
different VLANs. There can be a different VLAN for every
mechanically distinguishable characteristic of the packet.
In general, this includes whether the packet is UDP or TCP or which
subnet the source is, but that would involve layer 3 capabilities and
you have defined the situation as involving only a layer 2 switch.
A specific example is a Nortel Baystack 450, which is able to
create VLANs based upon several characteristics, such as whether
the packet is 802.2, 802.3 or SNAP.
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