[CCAMP] The description of Path Key retaining time in RFC5553

["Zhangxian (Xian)" <[e-mail]>]

Hi, all,

  The following is the piece of information that i mentioned already require retaining the Path key information for the lifetime of LSP. 

Section 3.2 from RFC5553
"
.......
On a Path message, the PKS SHOULD identify the LSR replacing the CPS and provide a Path Key that can be used to expand  the path segment.  In the latter case, the Path Key and its expansion SHOULD be retained by the LSR that performs the substitution for at least the lifetime of the LSP.  In both cases, the expansion of the PKS SHOULD be made available to diagnostic tools under the control of local policy.
"

My understanding of the stateful PCE (from PCE WG) is to have LSP-DB documenting information such as the identifiers (the 5-tuple), route, bw information etc. So I do not think our extensions defined in http://tools.ietf.org/html/draft-zhang-ccamp-route-exclusion-pathkey-00 incur any new additional requirements. Please review our draft and let us know what you think.

Cheers,
Xian