Hi Lizhong, As a result of this discussion the RTGWG will add another requirement where the solution should be able to indicate to a composite link that both the directions of a bidirectional LSP must be bound to the same component link.
This is indeed what we want for 1588. We will also include a pointer to this in the next revision. Cheers, Manav ________________________________ From: [email protected] [mailto:[email protected]] Sent: Monday, January 31, 2011 6.10 AM To: Bhatia, Manav (Manav) Cc: [email protected] Subject: RE: [TICTOC] Transporting PTP messages (1588) over MPLS Networks Hi Manav, I see the discussion at RTGWG, it is good. Share within TICTOC: http://www.ietf.org/mail-archive/web/rtgwg/current/msg03181.html Thanks Lizhong "Bhatia, Manav (Manav)" <[email protected]> wrote on 2011-01-28 08:09:50: > Lizhong, > > > [Lizhong] I mean the LAG between two end-points, > > not MC-LAG. E.g, one LAG interface with physical link > > A & B between two end-points, it is possible that the forward > > path will go through A, and backward path will go through B, > > then the physical path is not symmetric. If I understand correctly, > > you just assume the transport delay on link A & B are the > > On an ordinary lag, unless it's a MC-LAG this can be assumed to be > more or less the same. > > > same, but this is not always true, especially for the composite > > link defined in RTGWG (draft-ietf-rtgwg-cl-requirement). > > I quickly glanced through this draft and these can imo be easily > avoided by defining a new link type - Composite link, in the link > type sub-TLV of Link TLV in OSPF [RFC3630]. Such links MUST be > avoided for setting up the PTP LSPs. Similarly the extended IS > reachability TLV could be extended for IS-IS to avoid composite links. > > One could also use coloring to avoid these links, but this would > entail manual configuration which may not be desirable. > > Cheers, Manav > -------------------------------------------------------- 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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