North American Network Operators Group
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Re: Any 1U - 2U Ethernet switches that can handle 4K VLANs?

  • From: Alexei Roudnev
  • Date: Tue Jan 27 02:19:34 2004 
Sorry; of course, I meant _change MTU_. 


> 
> 
> 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 [email protected] 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, [email protected]
> >