Re: Bridge Frame SNDU Encapsulation

[Gorry Fairhurst <gorry@erg.abdn.ac.uk>]

On 17/3/05 3:35 am, "nurul" <azila@nrg.cs.usm.my> wrote:

> Hello all,
> 
> I have a question on Bridge Frame SNDU Encapsulation. For this type,
> there is no differentiation on whether it is receiving IPv4 packets or
> IPv6 packets is there? I would just want a confirmation.
> Thank you in advance.:)
> 
> Best regards,
> Nurul
> 

Indeed, bridging is a link layer mechanism, the original frame should be
sent without modification as a bridging payload.

The normal operation for IPv6 is expected to use the native encapsulation.
In some scenarios, this is not possible/desirable, in which case L2 bridging
can be used.

The final receiver of the bridged frame will (as usual) consult the
EtherType field of the Ethernet frame received - which will be an IPv6
codepoint if the frame itself carried an IPv6 packet.


Gorry