Re: New LINKTYPE_ for EPON

[Philip Rosenberg-Watt <P.Rosenberg-Watt () cablelabs com>]

On 4/24/14 16:30 , "Guy Harris" <guy () alum mit edu> wrote:

> On Apr 24, 2014, at 6:31 AM, Philip Rosenberg-Watt
> <p.rosenberg-watt () cablelabs com> wrote:
>
> > Then how are we to determine if the capture is 1G or 10G mode? Do we
> > simply exclude the possibility of XXXXXX being 010101 for the MPCP LSB?
> > Or
> > are we back to a preference, but to select 1G vs 10G mode? Or maybe a
> > LINKTYPE_EPON_10G?
>
> Given that the downstream encryption mechanisms are different for 1G and
> 10G, and given that the sniffing hardware presumably knows whether it's
> sniffing 1G or 10G, I'd vote for LINKTYPE_EPON_1G and LINKTYPE_EPON_10G,
> with the differences being in the parsing of the octet in question and in
> the decryption of downstream traffic if the program reading the file
> supports that.

Take a look at this and tell me what you think:
http://en.wikipedia.org/wiki/10G-EPON#Backward_compatibility
I'm not sure my original assumption was correct: that 1G and 10G were
mutually exclusive.

_______________________________________________
tcpdump-workers mailing list
tcpdump-workers () lists tcpdump org
https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers