[mpls-tp] Question to draft-boutros-mpls-lsp-ping-ttl-tlv-03.txt
zhang.fei3@zte.com.cn Fri, 04 March 2011 04:05 UTC
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Subject: [mpls-tp] Question to draft-boutros-mpls-lsp-ping-ttl-tlv-03.txt
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Dear Authors, I have read this version of the draft, here are some comments, please consider 1. The last paragraph in introduction , "The scope of this TTL TLV is currently limited to MS-PW or Bidirectional co-routed MPLS TP LSPs." Just my two cents, I think you can enlarge the scope to inlcude associated bidirectional LSP, for the initiator can learn the TTL TLV value from the NMS or control plane. Furthermore, the same intermediate nodes know the binding relationship of the two unidirectional LSPs (one from west to east and the other one form east to west) according to the definition in RFC5654. 2. Section 4.2 "Return TTL Value = (TTL TLV Value)-(Incoming Label TTL)-1" SHOULD be "Return TTL Value = (TTL TLV Value)-(Incoming Label TTL)+1" ? Fei