Yup, thats correct!
Cheers, Manav
On 1/18/2011 1:14 PM, Lars Ellegaard wrote:
Thanks, Manev.
Wrt.
* For my understanding: the range of PTP reserved labels, is
that defined by the operator?
I am not sure I understand the reserved labels that you are referring
to.
[LE] I was confused by a sentence towards the end in section 5.2: "In
such cases, the PW label SHOULD be chosen from the PTP Label range."
Looking at section 13+14 on I now understand that the binding of PTP LSP
and label is achieved via the RSVP-TE Object.
Rgds,
Lars
-----Original Message-----
From: Bhatia, Manav (Manav) [mailto:[email protected]]
Sent: 17 January 2011 17:16
To: Lars Ellegaard
Cc: [email protected]
Subject: RE: [TICTOC] Transporting PTP messages (1588) over MPLS
Networks
Hi Lars,
* TC: Transparent Clocking --> Transparent Clock
* PTP PW:
Should the text read: A PW within a PTP LSP that is
dedicated to carry PTP messages ?
That at least is my understanding of the PTP PW.
Put another way, can you have an Ethernet PW that is
sometimes carrying PTP, sometimes "data"?
More general, mustn't all labels in the stack (apart from
reserved labels) be PTP labels?
* CW: duplicate
Will do.
Section 5
* Figure 1+2: should top label read "PTP label", ref. section 4?
The current text looks ok to me. Its called PTP Tunnel Label to
explicitly indicate that it's the outermost label that LSRs would use to
switch the packets on.
* For my understanding: the range of PTP reserved labels, is
that defined by the operator?
I am not sure I understand the reserved labels that you are referring
to.
Section 15
* last paragraph says:
"The use of Penultimate Hop Pop (PHP) is acceptable as long as either
the PHP label is the bottom of stack label (applicable
only to UDP/IP
encapsulation) or the label below the PHP label is a PTP label."
This implies that the PHP-label is also a PTP label, right?
A more general comment: would you agree that there is a
general class of tunnel technologies
(PBB, MPLS, IPoverIP) that share the problem you have
described here, and to which you found a solution for MPLS?
I think Yes.
Cheers, Manav
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