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Signaling extension A new RSVP ERROR code : Saturation Several error sub-codes, indicating the reasons for the saturation (memory shortage, max LSP number reached…) On receipt of a Path message for a new LSP, a saturated LSR should reject the LSP, and send back a PathErr, with the Saturation Error code Such notification will allow head-end LSR taking appropriate action E.g. recompute a path avoiding the saturated node … |