RE: [ethmac] Hai...

["Igor Mohor (uni-mb)" <igor.mohor@uni-mb.si>]

> -----Original Message-----
> From: suresh.dorepally@st.com [mailto:suresh.dorepally@st.com]
> Sent: 5. april 2001 14:06
> To: ethmac@opencores.org
> Cc: igor.mohor@uni-mb.si
> Subject: RE: [ethmac] Hai...
> 
> 
> Thank u for your reply...
> How the maximum transfer time can be 2 * 1518 bytes . The maximum
> ethernet frame is anyway 1518 bytes .So the time taken to transmit this
> frame is 2 * 1518 transmit clocks...Is it right or not...

Yes. What you said is correct. 

> Is this true that the incorporation of defer counter is just to abort
> transmission of a packet which doesn't got a chance to transmit due to
> occupation of the media...
> and is it justified to abort a packet transmission for the reason of
> unavailability of the media...

Yes. There is a bit to select whether to abort the packet that didn't 
get the chance to be transmitted or to wait forever for the carrier.
Read the eth. spec. at: http://www.opencores.org/cores/ethmac/Eth_spec.pdf

> What happens  if it happens to every packet in an a worst case ....
> Thanks in advance.

It means something is wrong with the ethernet traffic. This is not a
normal situation.

Regards, 
	Igor