Dear Shahram,
as Yaacov noted "... sending 1588 over the GACh DCN would be an alternative
mechanism that was not discussed in TICTOC." And that is unfortunate and
perhaps I should have written a document earlier. Timing Distribution DCN can
interconnect 1588-capable ports with combination of section and LSP spans. I am
interested to understand why you believe that TC function can not be supported
by a node terminating G-ACh and only BC functionality can be supported.
Regards,
Greg
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
Shahram Davari
Sent: Wednesday, July 10, 2013 9:11 AM
To: Yaakov Stein
Cc: [email protected]; [email protected]
Subject: Re: [TICTOC] [mpls] TICTOC WG LC for draft-ietf-tictoc-1588overmpls
Hi
I support this draft to go ahead as RFC. We have worked almost 2 years on this
draft and have addressed all comments by participants and area director.
I disagree with Greg's comment. We have made the draft generic based on
Stewart's request so that if in future IETF decided to carry other Timing
protocols such as NTP they can use the same mechanism.
Also I disagree with using GAL-ACH channel, since if the proposal is To use
Section Channel then it can't support TC and can only support BC. And if the
proposal is to use LSP Channel, then intermediate routers need to do deep
packet inspection of all packets and detect 1588 packets encapsulated in the
ACH. Also most routers upon detection of any terminated ACH send those packets
directly to CPU. This method had been considered by authors and rejected due to
its issues.
The current method is simple and supports TC and BC.
Regards,
Shahram
>
>
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On
> Behalf Of Yaakov Stein
> Sent: 04 July, 2013 12:21
> To: [email protected]
> Cc: [email protected]
> Subject: [TICTOC] TICTOC WG LC for draft-ietf-tictoc-1588overmpls
>
> We hereby announce a TICTOC working group last call for
> draft-ietf-tictoc-1588overmpls (see
> http://tools.ietf.org/html/draft-ietf-tictoc-1588overmpls-05).
>
> Please send indications of support, as well as any remaining technical
> comments, to the list.
>
> Due to the MPLS aspects of this draft this email is also being sent to the
> MPLS WG, but please conduct all discussion on the TICTOC working group
> mailing list.
>
> This working group last call will end on July 19, 2013.
>
> Y(J)S
>
> _______________________________________________
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>
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