Hi Lizhong, You can only ensure that 1588aware LSRs will not do ECMP on PTP LSPs. What if we have a non-1588aware LSR in the path? The head end when setting up the RSVP path would know this (by inspecting the IS-IS or OSPF TE info) and could in such cases make use of the Entropy label to ensure that all PTP packets follow the same path. This is one scenario where i think we may want to use Entropy labels.
Cheers, Manav ________________________________ From: [email protected] [mailto:[email protected]] Sent: Tuesday, January 18, 2011 6.03 PM To: Bhatia, Manav (Manav) Cc: [email protected] Subject: Re: [TICTOC] Transporting PTP messages (1588) over MPLS Networks Hi Manav, In section 8 ECMP, since it is said PTP LSPs and PWs MUST NOT be subject to ECMP, why in section 5.2 the encapsulation of figure 2 has entroy label? I am a bit confused. Regards Lizhong > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 15 Jan 2011 16:25:59 +0530 > From: "Bhatia, Manav (Manav)" <[email protected]> > Subject: [TICTOC] Transporting PTP messages (1588) over MPLS Networks > To: "[email protected]" <[email protected]> > Message-ID: > <[email protected]. > alcatel-lucent.com> > > Content-Type: text/plain; charset="us-ascii" > > Hi, > > We have posted a revised version of draft-davari- > tictoc-1588overmpls-01 and would appreciate a feedback from the WG. > > The draft is available here: > http://www.ietf.org/id/draft-davari-tictoc-1588overmpls-01.txt > > Cheers, Manav > > -- > Manav Bhatia, > IP Division, Alcatel-Lucent, > Bangalore - India > > > -------------------------------------------------------- ZTE Information Security Notice: The information contained in this mail is solely property of the sender's organization. This mail communication is confidential. Recipients named above are obligated to maintain secrecy and are not permitted to disclose the contents of this communication to others. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the originator of the message. Any views expressed in this message are those of the individual sender. This message has been scanned for viruses and Spam by ZTE Anti-Spam system.
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