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Re: Any 1U - 2U Ethernet switches that can handle 4K VLANs?

  • From: Scott McGrath
  • Date: Mon Jan 26 16:05:53 2004 

Both the ISL _and_ the Dotq headers are stripped off at the trunk
interface so they _both_ change the packet size but neither alters the
payload.


                            Scott C. McGrath

On Mon, 26 Jan 2004 sthaug@nethelp.no wrote:

>
> > ISL _DOES NOT CHANGE_ packet size.
>
> An 802.1q tag adds 4 bytes to the Ethernet frame.
>
> ISL encapsulation adds 30 bytes to the Ethernet frame.
>
> Steinar Haug, Nethelp consulting, sthaug@nethelp.no
>