Re: VLANs confusing

["Brian Loe" <knobdy () gmail com>]

On 11/12/06, Raj Shaz <rajshas () gmail com> wrote:

> All i understand of VLANs is encryption of packets at source and
> decryption at destination.

VLANs do NOT do encryption.

> Which protocol does these machines should used then?

There are two protocols for VLANs, one is proprietary to Cisco.

> When two cisco devices are configured for VLANs , we basically make
> these devices to transfer key (for en/decryption) ,does these keys has
> any relevance with other VLANs?. Is there exists a possibility of key
> overlapping on gigantic network ( akin internet ).

There isn't a key involved as there isn't any encryption involved.
Might you be confusing VLANs for VPNs?

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