[mpls] comments on draft-ietf-mpls-number-0-bw-te-lsps-06
"PAPADIMITRIOU Dimitri" <Dimitri.Papadimitriou@alcatel-lucent.be> Sat, 10 November 2007 14:15 UTC
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Thread-Topic: comments on draft-ietf-mpls-number-0-bw-te-lsps-06
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From: PAPADIMITRIOU Dimitri <Dimitri.Papadimitriou@alcatel-lucent.be>
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Subject: [mpls] comments on draft-ietf-mpls-number-0-bw-te-lsps-06
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hi a couple of comments o) section 2. "The traffic routed onto such unconstrained TE LSP simply follows the IGP shortest path (since the TE LSP computed by the path computation algorithm (e.g. CSPF) will be no different than the IGP shortest path should the TE metric be equal to the IGP metric) but is protected with MPLS TE Fast Reroute." -> last part is unclear - shouldn't it state "but if LSP are locally protected then RFC 4090 still applies" ? i found the paragraph difficult to parse in the context of the document because it does not state or clarify what is the real implication in case of path-provisioned only LSP on FRR itself. o) section 2. "This document specifies a new Link-type Traffic Engineering sub-TLV used to indicate the number of unconstrained TE LSPs signalled across a link." [..] "TE LSPs signalled with zero bandwidth that are configured and provisioned through a management system are not included in the count that is reported." -> a possible choice, but what about provisioned LSP but management system removed LSP do you decrease the counter or not ? or vice-versa ? o) section 2. "TE LSPs signalled with zero bandwidth that are configured and provisioned through a management system are not included in the count that is reported." does the sentence means: by any other mechanism than RFC 3209 ? if yes pls clarify. o) section 4. the issue is not to detail mechanisms but overflooding and overloads hence a text along the following line should be included borrowed from the RFC 3630 "Origination of TE LSA including this new sub-TLV is recommended to be rate-limited to at most one every MinLSInterval [RFC 2328]. Upon receipt of such TE LSA the router should update its TEDB. No Shortest Path First (SPF) or other route calculations are necessary." o) the document should also detail implication of planned restart and graceful restart in part. how the value of the number of path-only provisioned LSP is recovered after such event ? thanks, -d. _______________________________________________ mpls mailing list mpls@lists.ietf.org https://www1.ietf.org/mailman/listinfo/mpls
- [mpls] comments on draft-ietf-mpls-number-0-bw-te… PAPADIMITRIOU Dimitri